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09/09/2020 – Ephemeris – Let’s look at a the naked-eye planets for this week

September 9, 2020

This is Bob Moler with Ephemeris for Wednesday, September 9th. Today the Sun will be up for 12 hours and 48 minutes, setting at 8:03, and it will rise tomorrow at 7:16. The Moon, 1 day before last quarter, will rise at 11:48 this evening.

Let’s look at a the naked-eye planets for this week. Jupiter and Saturn are both low in the southern sky at 10 pm. Jupiter is the very bright one. To the left of it will be the somewhat dimmer Saturn. They seem to be separating a teeny bit due to the Earth’s motion now, but they will cross paths in December. Both planets will be up until the morning hours with Jupiter setting first at 2:05 tomorrow morning and Saturn following at 2:47 am. The next planet visible will be Mars which will rise at 9:44 pm. Its now down to 43.3 million miles (69.7 million km) away, as the Earth slowly overtakes it at the rate of about 2.3 million miles (3.8 million km) a week as the Earth begins to pull abreast of it. Brilliant Venus will rise at 3:30 am as it retreats toward the Sun.

The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Early evening planets

Jupiter and Saturn with the zodiacal constellations at 9 pm tonight September 9, 2020. Click on the image to enlarge. Created using Stellarium and GIMP.

Late evening planets

Jupiter, Saturn and Mars with the zodiacal constellations at 11 pm tonight September 9, 2020. Click on the image to enlarge. Created using Stellarium and GIMP.

Mars, the Moon, Venus and the zodiacal constellations and Orion at 6 am tomorrow morning September 10, 2020. Click on the image to enlarge. Created using Stellarium and GIMP.

Binocular Moon

The last quarter Moon as it might be seen in binoculars at 6 am tomorrow September 10, 2020. Created using Stellarium.

Telescopic Planets

The planets as seen in a telescope (north up) with the same magnification for the night of September 9/10, 2020. Times of the display are: Jupiter and Saturn, 9 pm; Mars, Midnight; Venus, 6 am. Apparent diameters: Jupiter, 43.21″; Saturn, 17.77″, rings, 41.39″. Mars, 20.26″, and Venus 18.04″. Mars also displays an enlargement showing surface detail. 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

Planets and the Moon at sunset and sunrise of a single night starting with sunset on the right on September 9, 2020. The night ends on the left with sunrise on the 10th. Click on the image to enlarge. Created using my LookingUp program.

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