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Posts Tagged ‘Jupiter’

03/02/2023 – Ephemeris – Let’s search for the naked-eye planets for this week

March 2, 2022 Comments off

This is Ephemeris for Ash Wednesday, March 2nd. Today the Sun will be up for 11 hours and 13 minutes, setting at 6:31, and it will rise tomorrow at 7:16. The Moon is new today, and won’t be visible.

Let’s search for the naked-eye planets for this week. The last evening planet, Jupiter, will pass behind the Sun this Saturday and enter the morning sky. So the action shifts to the morning sky, where Saturn, Mercury, Venus and Mars reside. Saturn and Mercury are too close to the direction of the Sun to be spotted now. Mercury is heading back toward the Sun. Saturn should be able to be spotted in morning twilight in a few weeks as it joins Venus, our brilliant morning star, and Mars in the southeast about half an hour to 45 minutes before sunrise. Tomorrow morning Mars will be below, and right of bright Venus, which will rise at 5 am, with Mars following at 5:26.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

Venus and Mars in the morning

Venus and Mars in the morning as they might appear at 6:30 am, about 45 minutes before sunrise, Thursday, March 3, 2022. Created using Stellarium.

Venus through a telescope

Venus through a telescope as it would appear before sunrise tomorrow morning, March 3, 2022. It’s shown larger than usual, since it’s the only planet that looks like anything in a small telescope now. Its apparent diameter is 30.49″, and it is 39.7% illuminated by the Sun. Mars has an apparent diameter of 4.73″.
(” means seconds of arc. 1″ is 1/3600th of a degree). Created using Stellarium, which is also the source for the apparent diameters and the illuminated fraction of Venus.

Planets and the Moon 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 March 2, 2022. The night ends on the left with sunrise on the 3rd. There’s a label pile up in the sunrise panel where the Labels for Saturn and Mercury overlay each other. Click on the image to enlarge it. Created using my LookingUp program.

02/16/2022 – Ephemeris – Let’s search for the naked-eye planets for this week

February 16, 2022 Comments off

This is Bob Moler with Ephemeris for Wednesday, February 16th. Today the Sun will be up for 10 hours and 31 minutes, setting at 6:12, and it will rise tomorrow at 7:39. The Moon, at full today, will rise at 6:11 this evening.

Let’s search for the naked-eye planets for this week. There is just one planet left in the evening sky now, and it’s going to leave us soon. Jupiter will be barely visible very low in the west-southwest around 6:45 pm, or a half hour after sunset. It will set at 7:16 pm. Saturn has entered the morning sky, where we’ve lost it for a month or so. Speaking of the morning sky, Venus, our brilliant morning star, Mars and maybe even Mercury can be spotted low in the southeast by 6:55 am, about 45 minutes before sunrise. Mars will be below, and right of Venus, while Mercury will be near the horizon left of Venus. Mercury is brighter than Mars, but lower in more intense twilight. Venus will rise at 5:12, with Mars following at 5:45, and Mercury rising last at 6:30.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

Jupiter, tonight, is barely visible in the west-southwest at 6:45 pm, about 34 minutes after sunset, February 16, 2022. Created using Stellarium.

The full Moon rising tonight

The full Moon as it might appear as it rises tonight, as viewed in binoculars. Notice the squashed appearance of the Moon, which is due to the fact that atmospheric refraction is affecting the bottom part of the Moon more than the top. Created using Stellarium.

The three morning planets visible at 6:45 am

Venus, Mars and Mercury, visible at 6:45 am, or about 55 minutes before sunrise, tomorrow February 17, 2022. Mercury is at its greatest elongation or separation from the Sun. Created using Stellarium.

Venus through a telescope

Only one planet is worth attention through a telescope. That one is Venus as a bright crescent. Venus is magnified much more than I normally do, so the caption will fit under it. Created using Stellarium.

Planets and the Moon 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 February 16, 2022. The night ends on the left with sunrise on the 17th. Click on the image to enlarge it. Created using my LookingUp program.

02/09/2022 – Ephemeris – Let’s search for the naked-eye planets for this week

February 9, 2022 Comments off

This is Ephemeris for Wednesday, February 9th. Today the Sun will be up for 10 hours and 11 minutes, setting at 6:02, and it will rise tomorrow at 7:50. The Moon, 1 day past first quarter, will set at 3:37 tomorrow morning.

Let’s search for the naked-eye planets for this week. There is just one planet left in the evening sky now, and it’s going to leave us soon. Jupiter will be visible in the west-southwest around 6:30 pm. It will set at 7:35 pm. Saturn is too close to the Sun to be seen, It crossed behind the Sun last Friday, and has entered the morning sky, where we will lose it for a month or so. Speaking of the morning sky, Venus, our brilliant morning star, Mars and maybe even Mercury can be spotted low in the southeast by 7 o’clock. Mars will be below, right of Venus, while Mercury will be near the horizon left of Venus. Mercury is brighter than Mars, but lower in more intense twilight. Venus will rise at 5:23, with Mars following at 5:53, and Mercury rising last at 6:32.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

Jupiter in evening twilight

Jupiter in evening twilight tonight at 6:30 pm or about a half hour after sunset, February 9, 2022. Created using Stellarium.

Binocular Moon

The waxing gibbous Moon as it might appear tonight in binoculars or small telescope. Created using Stellarium.

Venus, Mars, and Mercury in the morning

Venus, Mars, and Mercury at 7 am, or about 50 minutes before sunrise in the morning twilight. Created using Stellarium.

Telescopic views of Jupiter and Venus

Telescopic views of the Jupiter and its moons; and Venus (north up) as they would be seen in a small telescope, with the same magnification, overnight, February 9/10, 2022. As far as Jupiter is concerned, I’m not sure its moons will be visible in the twilight or close to the horizon. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Jupiter, 33.34″ at 6:45 pm. Mars is not shown, its apparent diameter is 4.44″. Venus has an apparent diameter of 42.07″ and is 23.8% illuminated at 7 am. Mercury, is also not shown, it has an apparent diameter of 7.73″ and it’s 47.3% illuminated. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts).

Planets and the Moon 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 February 9, 2022. The night ends on the left with sunrise on the 10th. Click on the image to enlarge it. Created using my LookingUp program.

02/02/2022 – Ephemeris – Let’s search for the naked-eye planets for this week

February 2, 2022 Comments off

This is Bob Moler with Ephemeris for Ground Hog Day, Wednesday, February 2nd. Today the Sun will be up for 9 hours and 52 minutes, setting at 5:52, and it will rise tomorrow at 7:59. The Moon, 1 day past new, will set at 7:42 this evening.

Let’s search for the naked-eye planets for this week. There is just one planet left in the evening sky now. Jupiter will be visible in the west-southwest by 6:30 pm. The thin crescent Moon will appear below and left of it tonight. It’s kind of hard to tell which will be brighter. Jupiter will set at 7:54 pm. Saturn is too close to the Sun to be seen, and will cross behind the Sun on Friday, and will then enter the morning sky, where we will lose it for a month or so. Speaking of the morning sky, Venus, our brilliant morning star, will be in the southeast by 7 o’clock with the much dimmer Mars to the right and below it. Venus will rise at 5:40, with Mars following at 5:59. Antares is Mars’ rival in color and brightness, the red giant star Antares will be in the south-southeast at 7. Mars is speeding away from it.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

Jupiter and the Moon in twilight

Jupiter and the Moon in twilight at 6:30 pm tonight, February 2, 2022. Created using Stellarium.

Binocular view of a 1 day old Moon

This is what tonight’s one-day old Moon might look like in a pair of binoculars at 6:30 pm, February 2, 2022. The image shows earth shine, the reflected light of a nearly full Earth on The Moon’s night side. Created using Stellarium.

Venus and Mars in the morning

Venus and Mars in the morning at 7:00 tomorrow morning, February 2, 2022. Created using Stellarium.

Telescopic views of Jupiter and Venus

Telescopic views of the bright planets and their brighter moons (north up) as they would be seen in a small telescope, with the same magnification, overnight, February 2/3, 2022. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Jupiter, 33.56″ at 7 pm. Mars is not shown, its apparent diameter is 4.35″. Venus has an apparent diameter of 47.25″ and is 17.5% illuminated at 7 am. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts).

Planets and the Moon 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 February 2, 2022. The night ends on the left with sunrise on the 3rd. Click on the image to enlarge it. Created using my LookingUp program.

01/26/2022 – Ephemeris – Evening planets? Then there was one.

January 26, 2022 Comments off

This is Bob Moler with Ephemeris for Wednesday, January 26th. Today the Sun will be up for 9 hours and 35 minutes, setting at 5:43, and it will rise tomorrow at 8:07. The Moon, 1 day past last quarter, will rise at 3:37 tomorrow morning.

Let’s search for the naked-eye planets for this week. There is just one planet left in the evening sky now. Jupiter will be visible in the southwest by 6:15 pm. Jupiter will set at 8:12 pm. Saturn is too close to the Sun to be seen, and will cross behind the Sun in 9 days to enter the morning sky. In the morning sky, Venus, our brilliant morning star, and the much dimmer Mars will rise about the same time about 6:05 am. Both will appear low in the southeastern twilight by 7 am. Mars will be to the right of Venus by 11 and a half degrees, about the width of a fist held at arm’s length. Mars’ rival in color and brightness, the red giant star Antares, is to its right and a bit higher, and nearer the waning crescent Moon.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

Jupiter in evening twilight

Jupiter in evening twilight tonight, January 26, 2022. Created using Stellarium.

Waning crescent Moon

Waning crescent Moon as it might be seen at 7:15 am tomorrow morning, January 27, 2022. Created using Stellarium.

Telescopic views of Jupiter and Venus

Telescopic views of the bright planets and their brighter moons (north up) as they would be seen in a small telescope, with the same magnification, overnight, January 26/27, 2022. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Jupiter, 33.85″. Mars is not shown, its apparent diameter is 4.27″. Venus has an apparent diameter of 52.85″ and is 11.0% illuminated. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts).

Planets and the Moon 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 January 26, 2022. The night ends on the left with sunrise on the 27th. Click on the image to enlarge it. Created using my LookingUp program.

01/19/2022 – Ephemeris – Let’s search for the naked-eye planets for this week

January 19, 2022 Comments off

This is Ephemeris for Wednesday, January 19th. Today the Sun will be up for 9 hours and 19 minutes, setting at 5:33, and it will rise tomorrow at 8:13. The Moon, 2 days past full, will rise at 7:15 this evening.

Let’s search for the naked-eye planets for this week. There are two planets left in the evening sky now. Jupiter will be visible in the southwest by 6:15 pm. Saturn might be visible below and right of it, much closer to the Horizon. Finding Saturn might require the use of a pair of binoculars. Saturn will set at 6:44, while Jupiter will set at 8:22 pm. In the morning sky, Mars will rise at 6:10 am while Venus, our brilliant morning star, will rise at 6:40 am. Both will appear low in the southeastern twilight by 7:15. Mars will be to the right and a bit higher than Venus. Mars’ rival in color and brightness, the red giant star Antares, is to its right and a bit higher. Another bright star is low in the east at that time, the summer evening star Altair.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

Jupiter and Saturn in the evening

Jupiter and Saturn at 6:15 pm, about 45 or so minutes after sunset over an unobstructed horizon. Jupiter will be quite bright in twilight, while Saturn may require binoculars to find. Created using Stellarium.

Binocular Moon

The waning gibbous Moon as it might appear in binoculars or small telescope at 8 pm (about 45 minutes after rising) tonight, January 19, 2022. Created using Stellarium.

Venus and Mars in the morning

Venus and Mars as they might appear at 7:15 am, about an hour before sunrise tomorrow morning, January 20, 2022. At that time, the waning gibbous moon will appear in the west. Click on the image to enlarge it. Created using Stellarium.

Telescopic views of Jupiter, Saturn and Venus

Telescopic views of the bright planets and their brighter moons (north up) as they would be seen in a small telescope, with the same magnification, overnight, January 19/20, 2022. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Saturn 15.29″, its rings 35.63″; Jupiter, 34.19″. Mars is not shown, its apparent diameter is 4.19″. Venus has an apparent diameter of 58.07″ and is 5.2% illuminated. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts), though Venus’ image was enhanced in GIMP.

Planets and the Moon 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 January 19, 2022. The night ends on the left with sunrise on the 20th. Click on the image to enlarge it. Created using my LookingUp program.

01/12/2022 – Ephemeris – Let’s search for the naked-eye planets for this week

January 12, 2022 Comments off

This is Bob Moler with Ephemeris for Wednesday, January 12th. Today the Sun will be up for 9 hours and 6 minutes, setting at 5:24, and it will rise tomorrow at 8:17. The Moon, 3 days past first quarter, will set at 4:45 tomorrow morning.

Let’s search for the naked-eye planets for this week. There are three planets left in the evening sky now. Jupiter will be visible in the southwest by 6:15 pm. Saturn should appear below and right of it, much closer to the Horizon, with the slightly brighter Mercury a bit below and right of it. Mercury is a bit brighter than Saturn, but in brighter twilight. Finding Saturn and Mercury might take a pair of binoculars. Mercury will set at 6:55 pm, Saturn at 7:07, and Jupiter at 8:52 pm. In the morning sky, Mars is now visible by 7:15 am low in the southeast. Mars’ rival in color and brightness, the red giant star Antares, is to its right and a bit higher. Another bright star is low in the east at that time, the summer time evening star Altair.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

3 Evening planets

The three planets in evening twilight at 6:15 pm tonight, January 12, 2022. Created using Stellarium.

Binocular Moon

The waxing gibbous Moon, seen at 9 pm tonight, January 12, 2022. The easily spotted craters of Plato, Copernicus and Tycho are labeled. Created using Stellarium.

Telescopic views of Jupiter and Saturn for tonight

Telescopic views of the bright planets and their brighter moons (north up) as they would be seen in a small telescope, with the same magnification, this evening at 7 pm, January 12, 2022. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Saturn 15.34″, its rings 35.74″; Jupiter, 34.59″. Mercury is not shown, its apparent diameter is 4.12″ and is 34.1% illuminated. Mars also is not shown, its apparent diameter is 4.12″. Jupiter is showing two of its moons transiting its face. They will actually be invisible. Ganymede’s start of transit will be at 6:50 pm and should be visible before then. The ” symbol means seconds of arc (1/3600th of a degree). Created using Cartes du Ciel (Sky Charts).

Planets and the Moon 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 January 12, 2022. The night ends on the left with sunrise on the 13th. Click on the image to enlarge it. Created using my LookingUp program.

01/05/2022 – Ephemeris – Let’s search for the naked-eye planets for this week

January 5, 2022 Comments off

This is Bob Moler with Ephemeris for Wednesday, January 5th. Today the Sun will be up for 8 hours and 57 minutes, setting at 5:16, and it will rise tomorrow at 8:19. The Moon, 3 days past new, will set at 8:53 this evening.

Let’s search for the naked-eye planets for this week. Venus is three days from passing between the Earth and the Sun in what is called an inferior conjunction. It really isn’t visible in the bright evening twilight. It will emerge later this month in the morning sky. Jupiter might be visible in the southwest by 6 pm, above the 3-day-old crescent Moon. Saturn should appear a bit later, halfway between Jupiter and the horizon, but on an angle to the lower right. Mercury might be spotted again halfway to the horizon from Saturn to the lower right of it. This isn’t the best appearance of Mercury in the evening this year, the one in early April will be better. Mercury will set at 6:48 pm, Saturn at 7:30, and Jupiter at 9:11 pm.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

3 Evening planets and the Moon

Three Evening planets and the Moon at 6 pm on the southwest horizon tonight, January 5, 2022. Created using Stellarium.

3 day old Moon with earth shine

Three day old Moon with earth shine as it might look like in binoculars tonight, January 5, 2022. Created using Stellarium.

Mars and Antares in the morning

Mars and Antares at 7:00 tomorrow morning, January 6, 2022. The name Antares means “Rival of Mars”, Ares being the Greek equivalent to the Roman Ares. Created using Stellarium.

Telescopic views of Jupiter and Saturn for tonight

Telescopic views of the bright planets and their brighter moons (north up) as they would be seen in a small telescope, with the same magnification, this evening at 7 pm, January 5, 2022. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Saturn 15.41″, its rings 35.89″; Jupiter, 35.05″. Mercury is not shown, its apparent diameter is 6.67″ and is 64.2% illuminated. Mars also is not shown, its apparent diameter is 4.05″. Jupiter is showing 3 of its 4 bright moons. Io is in front of the planet. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts).

Planets and the Moon 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 January 5, 2022. The night ends on the left with sunrise on the 6th. Click on the image to enlarge it. Created using my LookingUp program.

 

01/04/2022 – Ephemeris – Planet show in the evening twilight tonight

January 4, 2022 Comments off

This is Bob Moler with Ephemeris for Tuesday, January 4th. The Sun will rise at 8:20. It’ll be up for 8 hours and 55 minutes, setting at 5:15. The Moon, 2 days past new, will set at 7:34 this evening.

Tonight, if it’s clear, there’s a chance that one could spot four planets, plus the Moon, in the southwestern evening twilight. However, not all at the same time. Venus should make an appearance at about 5:45 very low in the west-southwest, only 3 degrees or 6 moon-widths above a lake horizon. Jupiter might be visible then or in a few more minutes much higher in the southwest. The two-day-old Moon might be visible then, about halfway between Jupiter and Venus. By 6 pm, Mercury might be visible halfway between the Moon and where Venus was, because Venus will be setting at that time. By this time, too, Saturn will appear just above right of the Moon. This is the last chance to spot Venus in the evening sky until the last months of this year.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

4 Evening planets and the Moon

Four Evening planets and the Moon at 5:45 pm on a flat horizon at 5:45 pm tonight, January 4, 2022. Venus, because it is so low on the horizon, and Saturn, the dimmest of the four planets, may not be visible. Created using Stellarium.

Telescopic view of Venus 4 days before inferior conjunction

Venus is only 4 days away from inferior conjunction. Back in 1969 I took this photo of Venus then only 4 days from inferior conjunction from the Grand Rapids Amateur Astronomical Society’s Veen Observatory outside of Lowell, MI.

Venus was low in the sky, and the atmosphere made it very fuzzy.

12/29/2021 – Ephemeris – Let’s search for the naked-eye planets for this week

December 29, 2021 Comments off

This is Bob Moler with Ephemeris for Wednesday, December 29th. Today the Sun will be up for 8 hours and 50 minutes, setting at 5:10, and it will rise tomorrow at 8:19. The Moon, halfway from last quarter to new, will rise at 4:37 tomorrow morning.

Let’s search for the naked-eye planets for this week. Venus will be visible in the southwestern evening twilight by 6:00 tonight. It’s a crescent in telescopes, and even binoculars now. It is moving closer to us, and now appears larger than Jupiter in telescopes. Venus will set at 6:35 pm, 31 minutes earlier than it set a week ago, which means that the Sun is catching up with it faster and faster. It has only 10 days left in the evening sky, Mercury might be spotted just below left of Venus. By 5:45 pm, both Jupiter and Saturn should be able to be spotted in the southwestern sky. Saturn will be dimmer, and to its lower right, halfway between Jupiter and Venus. Saturn will set at 7:35 pm, with Jupiter setting later at 9:31 pm.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT – 5 hours). They may be different for your location.

Addendum

Evening planets at 6 pm 12/29/21

The evening planets in the southwest at 6 pm tonight, December 29, 2021. Created using Stellarium.

Mars and the Moon in the southeast at 7 am

Mars and the Moon in the southeast at 7 am, tomorrow morning, December 30, 2021. Note that Mars is near its rival in color, the red giant star Antares in Scorpius the scorpion. Sometimes Mars is dimmer than Antares, sometime it’s brighter. It depends on Mars’s distance. Currently, it’s quite far away, at 218 million miles (352 million kilometers). The Moon is shown at twice its actual size to better show its thin crescent phase. Created using Stellarium.

Telescopic views of naked-eye planets12/29/2021

Telescopic views of the bright planets and their brighter moons (north up) as they would be seen in a small telescope, with the same magnification, this evening at 7 pm, December 29, 2021. Apparent diameters: Venus, 59.89″, 3.7% illuminated; Saturn 15.49″, its rings 36.09″; Jupiter, 35.57″. Mercury is not shown, its apparent diameter is 5.68″ and is 82.4% illuminated. Mars also is not shown, its apparent diameter is 3.99″. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts).

In the above chart, I don’t show any planet that’s less than 10 seconds of arc in diameter due to the limitations of scale of what I can show that would be appropriate or small telescopes.

Planets and the Moon 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 December 29, 2021. The night ends on the left with sunrise on the 30th. Click on the image to enlarge it. Created using my LookingUp program.