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Ephemeris: 10/29/2025 – Looking at the whereabouts of the naked-eye planets for this week

October 29, 2025 Comments off

This is Ephemeris for Wednesday, October 29th. Today the Sun will be up for 10 hours and 18 minutes, setting at 6:35, and it will rise tomorrow at 8:18. The Moon, at first quarter today, will set at 12:50 tomorrow morning.

Let’s take our weekly look at the whereabouts of the naked-eye planets. Saturn is the brightest star like object in the east southeastern sky as soon as it gets dark. In a telescope Saturn sports a very thin ring, six tenths of a degree from being edge on in telescopes. Many times I’ve been asked whether they can see Saturn’s rings in their telescope. Normally I’d say yes. Currently, the rings appear extremely thin and can be difficult to pick up. Jupiter will rise before midnight at 11:17 PM. By 7:30 AM, it will appear high in the south-southeast, below the stars of Gemini, with Orion and the other bright stars of winter in the southwest. Brilliant Venus, which will rise at 6:48 AM will be very low in the east-southeast at 7:30 AM.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn with Fomalhaut and the Moon tonight at 9:00 PM, October 29, 2025.
Saturn with Fomalhaut and the Moon tonight at 9:00 PM, October 29, 2025. Created using Stellarium.
The first quarter Moon tonight, October 29, 2025. A view visible in small telescopes showing an image with and without selected features labeled. Created using Stellarium, LibreOffice Draw, and GIMP.
Venus and Jupiter are visible in the east and southern sky among the winter stars at 7:30 AM tomorrow morning, October 30, 2025.
Venus and Jupiter are visible in the east and southern sky among the winter stars at 7:30 AM tomorrow morning, October 30, 2025. Created using Stellarium.
Telescopic Saturn, Jupiter and Venus
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the October 29, 2025, Saturn will be 19.0″ in diameter, but its rings, being nearly edge on, may not be visible at all though they extend to 44.2″, they are tilted 0.7° from being edge on. Titan is transiting the planet at that time. At 6 AM on the morning of October 30, 2025, Jupiter will be 40.4″ in diameter. At 7:30 AM, Venus’ apparent diameter will be 10.5″, and be 95.9% illuminated. It’s on the far side of the Sun. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on October 29th, 2025. The night ends on the left with sunrise on the 30th.
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on October 29th, 2025. The night ends on the left with sunrise on the 30th. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
A low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, October 29th and 30th, 2025.
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, October 29th and 30th, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.

Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,

Ephemeris: 10/22/2025 – Taking our weekly look at the whereabouts of the naked-eye planets

October 22, 2025 Comments off

This is Ephemeris for Wednesday, October 22nd. Today the Sun will be up for 10 hours and 38 minutes, setting at 6:45, and it will rise tomorrow at 8:09. The Moon, 1 day past new, will set at 6:54 this evening.

Let’s take our weekly look at the whereabouts of the naked-eye planets. Saturn is the brightest star like object in the east southeastern sky at 8 PM. In a telescope Saturn sports a very thin ring, eight tenths of a degree from being edge on in telescopes. Many times I’ve been asked whether they can see Saturn’s rings in their telescope. Normally I’d say yes. Currently, the rings appear very thin and can be difficult to pick up. Jupiter will finally rise before midnight, barely, at 11:50 PM. By 7 AM, it will appear high in the south-southeast, below the stars of Gemini, with Orion and the other bright stars of winter in the south. Brilliant Venus, which will rise at 6:30 AM will be very low in the east at 7 AM.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn with the constellations Pegasus, Andromeda and Cassiopeia in the southeastern sky at 8:00 PM, October 22, 2025. Created using Stellarium.
Saturn with the constellations Pegasus, Andromeda and Cassiopeia in the southeastern sky at 8:00 PM, October 22, 2025. Created using Stellarium.
Jupiter with the stars and constellations of winter, and below is the just risen Venus at 7 AM.
Jupiter with the stars and constellations of winter. A preview of the evening skies a few months from now, but in the morning at 7:00 AM, October 22, 2025. Leo, a spring constellation is up at that, and below is the just risen Venus. Created using Stellarium.
Telescopic Saturn, Jupiter and Venus.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the October 22, 2025, Saturn will be 19.1″ in diameter, but its rings, being nearly edge on, should show up brighter than seen here, and extend to 44.5″. They are tilted 0.8° from being edge on. At 7 AM on the morning of October 23, 2025, Jupiter will be 39.5″ in diameter. Venus’ apparent diameter will be 10.5″, and be 95.0% illuminated. It’s on the far side of the Sun. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night.
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on October 22nd, 2025. The night ends on the left with sunrise on the 23rd. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
A low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, October 22nd and 23rd, 2025.
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, October 22nd and 23rd, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.

Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,

Ephemeris: 10/15/2025 – Taking our weekly look at the whereabouts of the naked-eye planets

October 15, 2025 Comments off

This is Ephemeris for Wednesday, October 15th. Today the Sun will be up for 10 hours and 58 minutes, setting at 6:57, and it will rise tomorrow at 7:59. The Moon, 2 days past last quarter, will rise at 2:47 tomorrow morning.

Let’s take our weekly look at the whereabouts of the naked-eye planets. Saturn is the brightest star like object in the east southeastern sky at 8 PM. In a telescope Saturn sports a very thin ring, 1° from being edge on in telescopes. Many times I’ve been asked whether they can see Saturn’s rings in their telescope. Normally I’d say yes. Currently, the rings appear very thin and can be difficult to pick up. Jupiter will rise at 12:11 AM. By 7 AM, it will appear high in the south-southeast, below the stars of Gemini, with Orion and the other bright stars of Winter in the south. Brilliant Venus, which will rise at 6:12 AM will be low in the east at 7 AM. Tomorrow morning the waning crescent of the Moon will appear between the two planets.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn with the constellations Pisces and Pegasus in the southeastern sky
Saturn with the constellations Pisces and Pegasus in the southeastern sky at 9:00 PM, October 15, 2025. Created using Stellarium.
Jupiter with the stars and constellations of winter. A preview of the evening skies a few months from now, but tomorrow morning at 7:00 AM.
Jupiter with the stars and constellations of winter. A preview of the evening skies a few months from now, but in the morning at 7:00 AM, October 16, 2025. Leo, a spring constellation is up at that time with the waning crescent Moon (enlarged by a factor of 4 for visibility) and below is the just risen Venus. Created using Stellarium.
The Moon, tomorrow morning, October 16, 2025. A view visible in small telescopes showing an image with and without selected features labeled. Created using Stellarium, LibreOffice Draw, and GIMP.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the October 15, 2025, Saturn will be 19.″ in diameter, but its rings, being nearly edge on, should show up brighter than seen here, and extend to 44.8″. They are tilted 1.0° from being edge on. At 7 AM on the morning of October 16, 2025, Jupiter will be 38.7″ in diameter. Venus’ apparent diameter will be 10.7″, and be 93.9% illuminated. It’s on the far side of the Sun. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on October 15th, 2025. The night ends on the left with sunrise on the 16th. Mars and Mercury’s labels overlat on the right side of the chart. Mars is to the left with a reddish color. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow.
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, October 15th and 16th, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.
Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,

Ephemeris: 10/08/2025 – Weekly look at the whereabouts of the naked-eye planets

October 8, 2025 Comments off

This is Ephemeris for Wednesday, October 8th. Today the Sun will be up for 11 hours and 20 minutes, setting at 7:09, and it will rise tomorrow at 7:51. The Moon, 2 days past full, will rise at 7:42 this evening.

Let’s take our weekly look at the whereabouts of the naked-eye planets. Saturn rises before sunset in the east. It is the brightest star like object in the east southeastern sky at 8 PM not long after the Moon rises. In a telescope Saturn sports a very thin ring, 1.2° from being edge on in telescopes. Saturn has an axial tilt of about 27°, so it has seasons like the Earth and since its rings are over its equator, when they go edge on to the Sun, it is an equinox for it, which happened this past May. Earth, being close to the Sun, sees nearly the same thing. Now the ring angle for us will decrease to about a third of a degree by November 23rd before increasing. By 7 AM, Jupiter will appear high in the southeast, under the stars of Gemini. With brighter Venus low in the east.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn in the east southeast with the just risen waning gibbous Moon at 8 PM tonight
Saturn in the east southeast with the just risen waning gibbous Moon at 8 PM tonight, October 8, 2025. Created using Stellarium.
The Moon tonight, October 8, 2025. A view visible in small telescopes showing an image with and without selected features labeled. Created using Stellarium, LibreOffice Draw, and GIMP.
Venus and Jupiter are visible in the southeastern sky among the winter stars at 7 AM tomorrow morning, October 9, 2025. Created using Stellarium.
Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the October 8, 2025, Saturn will be 19.3″ in diameter, but its rings, being nearly edge on, should show up brighter than seen here, and extend to 45.0″. They are tilted 1.2° from being edge on. At 7 AM on the morning of October 9, 2025, Jupiter will be 37.9″ in diameter. Venus’ apparent diameter will be 10.8″, and be 92.7% illuminated. It’s on the far side of the Sun. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on October 8th, 2025. The night ends on the left with sunrise on the 9th. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
Low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, October 8th and 9th, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.
Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,

Ephemeris: 10/01/2025 – Our weekly look at the whereabouts of the naked-eye planets

October 1, 2025 Comments off

This is Ephemeris for Wednesday, October 1st. Today the Sun will be up for 11 hours and 41 minutes, setting at 7:22, and it will rise tomorrow at 7:42. The Moon, 2 days past first quarter, will set at 1:55 tomorrow morning.

Let’s take our weekly look at the whereabouts of the naked-eye planets. Saturn rises before sunset in the east. It is the brightest star like object in the eastern to southeastern sky in the evening. In a telescope Saturn sports a very thin ring, 1.5° from being edge on. Saturn has an axial tilt of about 27°, so it has seasons like the Earth and since its rings are over its equator, when they go edge on to the Sun, it is an equinox for it, which happened this past May. Earth, being close to the Sun, sees nearly the same thing. Now the ring angle for us will decrease to about a third of a degree by November 23rd before increasing. By 7 AM, Jupiter will appear high in the southeast, under the stars of Gemini. With brighter Venus low in the east.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn in the east southeast at 9 PM tonight
Saturn in the east southeast at 9 PM tonight, October 1, 2025. Created using Stellarium.
The Moon tonight, October 1, 2025. A view visible in small telescopes showing an image with and without selected features labeled. Created using Stellarium, LibreOffice Draw, and GIMP.
Venus and Jupiter are visible in the southeastern sky among the winter stars at 7 AM tomorrow morning.
Venus and Jupiter are visible in the southeastern sky among the winter stars at 7 AM tomorrow morning, October 2, 2025. Created using Stellarium.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the October 1, 2025, Saturn will be 19.4″ in diameter, but its rings, being nearly edge on, should show up brighter than seen here, and extend to 45.2″. They are tilted 1.4° from being edge on. At 7 AM on the morning of October 2, 2025, Jupiter will be 37.1″ in diameter. Europa and Ganymede will be eclipsed by Jupiter then. Venus’ apparent diameter will be 11.0″, and be 91.4% illuminated. It’s on the far side of the Sun. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night.
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on October 1st, 2025. The night ends on the left with sunrise on the 2nd. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
A low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow.
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, October 1st and 2nd, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.
Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,

Ephemeris: 09/26/2025 – Pegasus rising

September 26, 2025 Comments off

This is Ephemeris for Friday, September 26th. Today the Sun will be up for 11 hours and 56 minutes, setting at 7:32, and it will rise tomorrow at 7:36. The Moon, 3 days before first quarter, will set at 9:19 this evening.

Saturn is well up in the east southeastern sky at 10 PM. This is the brightest “star” in that direction. Below it, at about the 4 o’clock position from it is Fomalhaut, which I sometimes call the loneliest star in the sky, because without Saturn or another planet in that direction it seems pretty much alone low in the south. Above and a bit to the left of Saturn is the Great Square of Pegasus A four star group standing on one corner which is the body of Pegasus the flying horse. Between Saturn and the Great Square is a faint and small circle of five or six stars called the Circlet, an asterism, which is a loop around one of the fish of Pisces the fish. Pisces is two fish held together by a long rope.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

An animated finder for Pegasus and Pisces, with Saturn as a guide.
An animated finder for Pegasus and Pisces, with Saturn as a guide. Pisces is made of dim stars, and will be more visible when Pegasus is high in the south at 1 AM, or in the evening in November. Created using Stellarium and GIMP.
Categories: Constellations, Ephemeris Program, Observing Tags: , ,

Ephemeris: 09/24/2025 – Taking our weekly look at the whereabouts of the naked-eye planets

September 24, 2025 Comments off

This is Ephemeris for Wednesday, September 24th. Today the Sun will be up for 12 hours and 3 minutes, setting at 7:35, and it will rise tomorrow at 7:33. The Moon, 3 days past new, will set at 8:27 this evening.

Let’s take our weekly look at the whereabouts of the naked-eye planets. Saturn now rises about sunset in the east. It was in opposition from the Sun last Sunday. In a telescope Saturn sports a very thin ring, 1.7° from being edge on. Saturn has an axial tilt of about 27°, so it has seasons like the Earth and since its rings are over its equator, when they go edge on to the Sun, it is an equinox for it, which happened this past May. Earth, being close to the Sun, see nearly the same thing. Now the ring angle for us will decrease to about a third of a degree by November 23rd before increasing. By 6:30 AM Jupiter will appear high in the east-southeast, under the stars of Gemini. With brighter Venus low in the east below the star Regulus in Leo.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn, low in the east, is below and a bit right of the Great Square of Pegasus
Saturn, low in the east, is below and a bit right of the Great Square of Pegasus, which stands on one corner at 9 PM tonight, September 24, 2025. Created using Stellarium.
Venus and Jupiter are visible in the east among the winter stars at 6:30 AM
Venus and Jupiter are visible in the east among the winter stars at 6:30 AM tomorrow morning, September 25, 2025. Created using Stellarium.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the September 24th 2025, Saturn will be 19.4″ in diameter, but its rings, even being nearly edge on, should show up brighter than seen here, and extend to 45.3″. They are tilted 1.7° from being edge on. At 6:30 AM on the morning of September 25th 2025, Jupiter will be 36.4″ in diameter. Europa will be eclipsed by Jupiter starting 4:41 AM, Ganymede will disappear into Jupiter’s shadow at 12:15 AM, and reappear at 3:19 AM, only to dissappear behind the planet at 4:20 AM. Venus’ apparent diameter will be 11.3″, and be 90.0% illuminated. It’s on the far side of the Sun. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on September 24th, 2025. The night ends on the left with sunrise on the 25th. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
A low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, September 24th and 25th, 2025.
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, September 24th and 25th, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.
Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,

Ephemeris: 09/17/2025 – Taking a look at the whereabouts of the naked-eye planets

September 17, 2025 Comments off

This is Ephemeris for Wednesday, September 17th. Today the Sun will be up for 12 hours and 24 minutes, setting at 7:49, and it will rise tomorrow at 7:25. The Moon, 3 days past last quarter, will rise at 3:44 tomorrow morning.

Let’s take our weekly look at the whereabouts of the naked-eye planets. Saturn now rises at 8:01 PM in the east. In a telescope Saturn sports a very thin ring, 2° from being edge on. Saturn has an axial tilt of about 27°, so it has seasons like the Earth and since its rings are over its equator, when they go edge on to the Sun, it is an equinox for it, which happened in May. Earth being close to the Sun and moving, see nearly the same thing. Now the ring angle for us will decrease to about a third of a degree by November 23rd before increasing. By 6 AM Jupiter will appear above the brighter Venus in the Eastern sky and among the stars of Gemini. Venus and Jupiter will have the waning crescent Moon between them tomorrow morning.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn, low in the east, below and a bit right of the Great Square of Pegasus, which stand on one corner. Created using Stellarium.
Venus, the waning crescent Moon and Jupiter are visible in the east among the winter stars at 6:00 AM tomorrow morning, September 18, 2025. Saturn is low in the west.
Venus, the waning crescent Moon and Jupiter are visible in the east among the winter stars at 6:00 AM tomorrow morning, September 18, 2025. Saturn is low in the west. Created using Stellarium.
The waning crescent Moon with earth shine.
The waning crescent Moon with earth shine on the morning of September 18, 2025. Not much detail can be made out in binoculars otherwise.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the September 17th 2025, Saturn will be 19.4″ in diameter, but its rings, even being nearly edge on, should show up brighter than seen here, and extend to 45.3″. They are tilted 2.0° from being edge on. On the morning of September 19th 2025, Jupiter will be 35.7″ in diameter. Europa is eclipsed by Jupiter, Io will begin its transit the face of Jupiter at 5:44 AM and will be nearly impossible to spot against the planet. Venus’ apparent diameter will be 11.5″, and be 88.8% illuminated. It’s on the far side of the Sun. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on September 17th, 2025. The night ends on the left with sunrise on the 18th. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
A low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow.
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, September 17th and 18th, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.
Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,

Ephemeris: 09/10/2025 – Our weekly look at the naked-eye planets

September 10, 2025 Comments off

This is Bob Moler with Ephemeris for Wednesday, September 10th. Today the Sun will be up for 12 hours and 46 minutes, setting at 8:02, and it will rise tomorrow at 7:17. The Moon, 3 days past full, will rise at 9:14 this evening.

Let’s take our weekly look at the whereabouts of the naked-eye planets. Saturn now rises at 8:30 PM in the east. In a telescope Saturn sports a very thin ring, 2¼° from being edge on. Saturn has an axial tilt of about 27°, so it has seasons like the Earth and since its rings are over its equator, when the go edge on to the Sun, it is an equinox for it, which happened in May. Earth being close to the Sun and moving, see nearly the same thing. Now the ring angle will decrease to about a third of a degree by November 23rd before increasing. By 6 AM Jupiter will appear above the brighter Venus in the eastern sky and among the stars of Gemini. Venus and Jupiter are joining the bright winter stars, a beautiful sight in the morning twilight.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn and the Moon at 10 PM tonight
Saturn and the Moon at 10 PM tonight, September 10, 2025. Created using Stellarium.
The Moon tonight, September 10, 2025. A view visible in small telescopes showing an image with and without selected features labeled. Created using Stellarium, LibreOffice Draw, and GIMP.
Venus and Jupiter are visible in the east among the winter stars at 6:00 AM tomorrow morning
Venus and Jupiter are visible in the east among the winter stars at 6:00 AM tomorrow morning, September 11, 2025. Saturn is off in the west-southwest. Created using Stellarium and GIMP.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the September 10th 2025, Saturn will be 19.4″ in diameter, but its rings, even being nearly edge on, should show up brighter than seen here, and extend to 45.2″. They are tilted 2.2° from being edge on. On the morning of the September 11th 2025, Jupiter will be 35.1″ in diameter. Earlier in the morning Io and its shadow will transit the face of Jupiter. Venus’ apparent diameter will be 11.8″, and be 86.9% illuminated. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on September 10th, 2025. The night ends on the left with sunrise on the 11th. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
A low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, September 10th and 11th, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.
Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,

Ephemeris: 09/03/2025 – Our weekly look at the naked-eye planets

September 3, 2025 2 comments

This is Ephemeris for Wednesday, September 3rd. Today the Sun will be up for 13 hours and 7 minutes, setting at 8:15, and it will rise tomorrow at 7:09. The Moon, 3 days past first quarter, will set at 3:04 tomorrow morning.

Let’s take our weekly look at the whereabouts of the naked-eye planets. The Red Planet Mars is too close to the direction of the Sun to spot. This is the curse of trying to view evening planets, which are near the direction of the Sun in late summer and early fall, for us at higher latitudes. Saturn now rises at 8:58 PM in the east. In a telescope Saturn sports a very thin ring, 2 ½° from being edge on. This angle will decrease to about a third of a degree by November 23rd before increasing. By 6 AM Saturn will be in the southwest. Jupiter will appear above the brighter Venus in the eastern sky and among the stars of Gemini. Venus and Jupiter are joining the bright winter stars, a beautiful sight in the morning twilight.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

Saturn and the Moon at 10 PM tonight
Saturn and the Moon at 10 PM tonight, September 3, 2025. Created using Stellarium.
The Moon tonight, September 3, 2025. A view visible in small telescopes showing an image with and without selected features labeled. Created using Stellarium, LibreOffice Draw, and GIMP.
Venus and Jupiter are visible in the east among the winter stars at 6:00 AM tomorrow morning
Venus and Jupiter are visible in the east among the winter stars at 6:00 AM tomorrow morning, September 4, 2025. Saturn is off in the west-southwest. Created using Stellarium and GIMP.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification.
Telescopic Saturn, Jupiter and Venus (north up) as they would be seen in a small telescope with the same magnification. On the evening of the September 3rd 2025, Saturn will be 19.4″ in diameter, but its rings, even being nearly edge on, should show up brighter than seen here, and extend to 45.1″. They are tilted 2.5° from being edge on. On the morning of the September 4th 2025, Jupiter will be 35.0″ in diameter. Venus’ apparent diameter will be 12.1″, and be 85.2% illuminated. The (”) symbol means seconds of arc, or 1/3600th of a degree. Created using Cartes du Ciel (Sky Charts), LibreOffice Draw and GIMP.
The naked-eye planets and the Moon at sunset and sunrise on a single night
The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on September 3rd, 2025. The night ends on the left with sunrise on the 4th. Click or tap on the image to enlarge it. Created using my LookingUp app and GIMP.
A low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow
This is a low precision ephemeris of the Sun Moon and naked eye planet positions for today and tomorrow, September 3rd and 4th, 2025. Some of the columns are self-explanatory, others are not. The transit column is the time that the body crosses the meridian and is due south. Elong, for elongation, is the angle between the Sun and that body. RA is right ascension, which is the object’s east-west position on the celestial sphere in hours and minutes. Dec is declination which is the north-south position of the object on the celestial sphere in degrees and minutes. R is the distance of that object from the Sun in astronomical units. An astronomical unit is about 93 million miles or 150 million kilometers. And Delta is the distance of that object from the Earth, also in astronomical units. I omit the ‘m’ in am and pm for compactness. The data was generated using my LookingUp for DOS app and displayed as a table by my Ephemeris Helper app.

Categories: Ephemeris Program, Naked-eye planets, Observing Tags: , , , , ,