Archive
05/19/2021 – Ephemeris – Let’s search for the naked-eye planets for this week
This is Bob Moler with Ephemeris for Wednesday, May 19th. Today the Sun will be up for 14 hours and 59 minutes, setting at 9:09, and it will rise tomorrow at 6:09. The Moon, at first quarter today, will set at 3:26 tomorrow morning.
Let’s search for the naked-eye planets for this week. Mars will be joined by two more planets seen in twilight. Both Mercury and Venus are now just above where the Sun set. By 10 pm Mercury should be able to be spotted low in the west-northwest. Venus might be spotted lower and somewhat earlier, it’s a lot brighter than Mercury. Venus will be setting at 10:21 pm with Mercury following at 11:04. Mars can be found in the west at 10:30 tonight, in the constellation of Gemini the twins. Tonight it’s in the middle of the constellation. Mars will set at 12:42 am. Jupiter and Saturn, are in the morning sky. Saturn will rise at 2:03 am, with brighter Jupiter rising at 2:43 am. By 5 am they will be in the southeast in the morning twilight.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
05/12/2021 – Ephemeris – Searching for the naked-eye planets for this week
This is Ephemeris for Wednesday, May 12th. Today the Sun will be up for 14 hours and 43 minutes, setting at 9:01, and it will rise tomorrow at 6:16. The Moon, 1 day past new, will set at 10:06 this evening.
Let’s search for the naked-eye planets for this week. Mars will be joined by two more planets seen in twilight. Both Mercury and Venus are now just above where the Sun set. By 9:30 pm Mercury should be able to be spotted low in the west-northwest. Venus might be spotted lower and somewhat earlier. Venus will be setting at 10:02 pm with Mercury following at 11 pm. Mars can be found in the west at 10 pm tonight, in the constellation of Gemini the twins. Tonight it’s in the middle of the constellation. Mars will set at 1:02 am. Jupiter and Saturn, are in the morning sky. Saturn will rise at 2:30 am, with brighter Jupiter rising at 3:13 am. By 5:30 am they will be low in the southeast in the morning twilight.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
04/28/2021 – Ephemeris – Searching for the naked-eye planets for this week
This is Ephemeris for Wednesday, April 28th. Today the Sun will be up for 14 hours and 7 minutes, setting at 8:44, and it will rise tomorrow at 6:35. The Moon, 2 days past full, will rise at 11:06 this evening.
Let’s search for the naked-eye planets for this week. Unfortunately the only one you’ll find in the evening is Mars. It can be found in the west at 10 pm tonight, in the constellation of Gemini the twins. Tonight it’s just above Castor’s foot. Mars will set at 1:21 am. Both Venus and Mercury are now just east of the Sun and to close to it to be spotted. Venus will be setting 43 minutes after sunset, with Mercury setting 27 minutes later. We should start spotting Mercury next week. It will be late May or early June before Venus will be easily seen. Jupiter and Saturn, are west of the Sun in the morning twilight. Saturn will rise at 3:24 am, with Jupiter rising at 4:03 am. By 6 am they will be low in the southeast. Jupiter, on the left, is the brighter of the two.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
04/21/2021 – Ephemeris – Let’s search for the naked-eye planets for this week
This is Ephemeris for Wednesday, April 21st. Today the Sun will be up for 13 hours and 47 minutes, setting at 8:35, and it will rise tomorrow at 6:46. The Moon, 1 day past first quarter, will set at 4:56 tomorrow morning.
Let’s search for the naked-eye planets for this week. Unfortunately the only one you’ll find in the evening is Mars. It can be found in the west at 10 pm tonight, between the constellations of Taurus the bull below and Gemini the twins above. Tonight it’s just off Castor’s big toe. Mars will set at 1:30 am. Venus is now just east of the Sun, setting 31 minutes after sunset. It will be late May or early June before it will be easily spotted in the evening twilight. Mercury is between the Sun and Venus. Saturn and Jupiter are at a far enough angle from the Sun to be spotted in the morning twilight. Saturn will rise at 3:51 am, with Jupiter rising at 4:28 am. By 6 am they will be low in the southeast.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
04/14/2021 – Ephemeris – Let’s search for the naked-eye planets for this week
This is Bob Moler with Ephemeris for Wednesday, April 14th. Today the Sun will be up for 13 hours and 27 minutes, setting at 8:27, and it will rise tomorrow at 6:58. The Moon, 3 days past new, will set at 11:11 this evening.
Let’s search for the naked-eye planets for this week. Unfortunately the only one you’ll find in the evening is Mars. It can be found in the west at 10 pm tonight, between the constellations of Taurus the bull below and Gemini the twins above. Mars will set at 1:39 am. Venus is now just east of the Sun, setting 23 minutes after sunset. It will be late May or early June before it will be easily spotted in the evening twilight. The other three naked-eye planets are west of the Sun in the morning sky. Only Saturn and Jupiter are at a far enough angle from the Sun to be spotted in the morning twilight. Saturn will rise at 4:17 am, with Jupiter rising at 4:53 am. By 6 am they will be low in the southeast.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
04/07/2021 – Ephemeris – Three naked-eye planets are visible overnight
This is Bob Moler with Ephemeris for Wednesday, April 7th. Today the Sun will be up for 13 hours and 6 minutes, setting at 8:18, and it will rise tomorrow at 7:10. The Moon, 3 days past last quarter, will rise at 6:14 tomorrow morning.
Let’s search for the naked-eye planets for this week. Unfortunately, the only one you’ll find in the evening is Mars. It can be found in the west at 10 pm tonight, above the orange star Aldebaran in the face of Taurus the bull. Mars will set at 1:47 am. Venus is now just a bit east of the Sun, setting fourteen minutes after sunset. It will be late May or early June before it will be easily spotted in the evening twilight. The other three naked-eye planets are just west of the Sun in the Morning sky. Only Saturn and Jupiter are at a far enough angle from the Sun to be spotted in the morning twilight. Saturn will rise at 4:43 am, with Jupiter rising 34 minutes later. By 6:30 am they will be low in the southeast.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
04/06/2021 – Ephemeris – The spring constellation of Leo
This is Bob Moler with Ephemeris for Tuesday, April 6th. Today the Sun will be up for 13 hours and 3 minutes, setting at 8:17, and it will rise tomorrow at 7:12. The Moon, 2 days past last quarter, will rise at 5:48 tomorrow morning.
Tomorrow morning early risers will see the Moon near the planets Saturn and Jupiter. Specifically Jupiter, left of Saturn will be right above the waning crescent Moon.
Tonight however, will be a good time to check out Leo the celestial lion high in the southeast. His distinctive pattern of stars is a backward question mark, with the bright star Regulus as the dot on the bottom of it. It delineates the male lion’s head and mane. That pattern is also called the Sickle. While Leo is one of the official 88 constellations, the Sickle is an asterism, or informal constellation. Completing Leo is a triangle of stars below left of Regulus, his rump ending with the star Denebola, at the root of Leo’s tail. Leo is rich in mythology.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addenda
Jupiter and the Moon tomorrow morning
Leo tonight
04/05/2021 – Ephemeris – Saturn, Jupiter and the Moon will be seen together tomorrow morning
This is Ephemeris for Monday, April 5th. Today the Sun will be up for 13 hours even, setting at 8:15, and it will rise tomorrow at 7:13. The Moon, 1 day past last quarter, will rise at 5:15 tomorrow morning.
By 6:30 am tomorrow morning, if it’s clear the waning crescent Moon will be seen near Saturn and Jupiter low in the southeastern sky. Saturn will be almost directly above the Moon. And Jupiter, which is much brighter than Saturn, will be farther off to the left of the Moon at the same height. At that hour, Saturn will be only 14 degrees above the horizon, while Jupiter will be only 10 degrees up. This will make telescopic viewing tough, since you’re looking through a lot of atmosphere. The planet images won’t be sharp and will be undulating due to atmospheric currents, though they are usually not as bad in the early morning as they are in the evening. Wednesday morning the Moon will be below Jupiter. However, in the coming weeks the planets will be getting higher. Both planets will be in prime evening position by August.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
03/31/2021 – Ephemeris – Let’s search for the naked-eye planets for this week
This is Bob Moler with Ephemeris for Wednesday, March 31st. Today the Sun will be up for 12 hours and 44 minutes, setting at 8:09, and it will rise tomorrow at 7:23. The Moon, 3 days past full, will rise at 12:11 tomorrow morning.
Let’s search for the naked-eye planets for this week. Unfortunately the only one you’ll find in the evening is Mars. It can be found in the west-southwest at 9 pm tonight, above the orange star Aldebaran in the face of Taurus the bull. Mars will set at 1:54 am. Right now three of the other four naked eye planets are just west of the Sun in the Morning sky. Venus is now below and just a bit east of the Sun, setting four minutes after sunset. Only Saturn and Jupiter are at a far enough angle from the Sun to be just spotted in the morning twilight. Saturn will rise at 5:10 am, with Jupiter rising 31 minutes later. By 6:30 am they will be low in the southeast. The Sun is rising earlier by 2 minutes a day now, while sunset is nearly matching that pace in the opposite direction.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
The new version of Stellarium I’m using, 0.21.0, has new textures for the Moon that are more realistic and show finer detail than earlier versions. If the Moon is enlarged to fill the window, clicking on a feature will reveal its name.
03/24/2021 – Ephemeris – Let’s search for the naked-eye planets for this week
This is Ephemeris for Wednesday, March 24th. Today the Sun will be up for 12 hours and 22 minutes, setting at 8:00, and it will rise tomorrow at 7:36. The Moon, 3 days past first quarter, will set at 6:26 tomorrow morning.
Let’s search for the naked-eye planets for this week. Unfortunately the only one you’ll find in the evening is Mars. It can be found high in the west-southwest at 9 pm tonight, above the orange star Aldebaran in the face of Taurus the bull, between it and the much higher star Capella in the west northwest. Mars will set at 2:01 am. Right now three of the other four naked eye planets are just west of the Sun in the Morning sky. Venus is now below and just a bit west of the Sun. Only Saturn and Jupiter are at a far enough angle from the Sun to be just spotted in the morning twilight. Saturn will rise at 5:35 am, with Jupiter rising a half hour later. By 7 am they will be low in the southeast.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
Mars appears above Aldebaran and the letter V of stars of the Hyades which is the face of Taurus the bull tonight March 24, 2021. This image is for 9 pm. or about an hour after sunset. Created using Stellarium.
The waxing gibbous Moon as it might be seen in binoculars tonight at 9 pm, March 24, 2021. Created using Stellarium.
Jupiter and Saturn low in the southeast at 7 am tomorrow morning, March 25, 2021. Note that they will probably appear dimmer than shown. Created using Stellarium.
Planets and the Moon at sunset and sunrise of a single night starting with sunset on the right on March 24, 2021. The night ends on the left with sunrise on the 25th. Venus is too close and south of the Sun to be plotted. Click on the image to enlarge. Created using my LookingUp program.
Bob Moler's Ephemeris Blog 