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2020, December 29: Jupiter, Saturn in Southwest

Jupiter and Saturn, December 10, 2020

2020, December 10: In the southwest after sunset, bright Jupiter is 1.0° to the lower right of Saturn.

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2020, December 29: During the early evening, Jupiter is 0.9° to the upper left of Saturn.

December 29, 2020: Bright Jupiter is to the upper left of Saturn as night falls.  Spot them as night falls.  The bright moon is low in the east-northeast.  Mars continues its eastward march through Pisces.

by Jeffrey L. Hunt

Chicago, Illinois:  Sunrise, 7:18 a.m. CST; Sunset, 4:28 p.m. CST.  Check local sources for sunrise and sunset times for your location.

Jupiter and Saturn appear lower in the southwest as night falls.  Now a week after their Great Conjunction, Jupiter is 0.9° to the upper left of Saturn. Both continue to be visible to the unaided eye. Jupiter sets less than 2 hours after sunset.  The viewing window narrows from about 45 minutes after sunset for less than 30 minutes before Jupiter is near the southwest horizon.

Farther east, the bright moon is low in the east-northeast.

2020, December 29: High in the southeast, Mars is 1.2° to the lower right of dim Pi Piscium (π Psc) and 2.8° to the upper right of Omicron Piscium (ο Psc).

Use a binocular to spot the starfield around Mars.  The moon’s brightness blots out the dimmer stars to the unaided eye.

The Red Planet is marching eastward in Pisces.  Find it high in the southeast when the sky darkens. The Red Planet is 1.2° to the lower left of dim Pi Piscium (π Psc on the chart) and 2.8° to the upper right of Omicron Piscium (ο Psc).

Read about Mars during December.

Detailed note:  In the evening sky, the Jupiter – Saturn gap continues to grow.  This evening it is 0.9°.  Jupiter is over 8° up in the southwest about one hour after sunset.  The planet is 1.1° to the lower left of σ Cap.  Farther east, Mars is less than 55° in altitude above the southeast horizon.  It continues its eastward march in front of the stars of Pisces.  Use a binocular to see it 1.2° to the lower right of dim π Psc and 2.8° to the upper right of ο Psc.  At this hour, the moon is low in the east-northeast, about 16° to the upper right of Castor (α Gem, m = 1.6).

For more about the Great Conjunction, read our feature article. This is the closest Jupiter – Saturn conjunction since 1623.

Read more about the planets during December.

2021, October 29 – November 1, Lion Moon

October 29 – November 1, 2021:  The crescent moon moves in front of the stars of Leo in the eastern sky before sunrise.  Watch the moon appear lower and the phase shrink (wane) each morning. Also note that there is no Full moon on Halloween this year!

2021, October 25:  Caught Between the Horns

October 25, 2021: This morning the bright gibbous moon seems to be caught between the horns of Taurus.  Mercury is making its best morning appearance.  The planet pack – Venus, Jupiter, and Saturn are in the evening sky.

2021, October 24: Saturn Inches Toward Jupiter

October 24, 2021:  Saturn is at its closest to Jupiter as the Jovian Giant picks up eastward speed.  The morning moon and Mercury are visible before sunrise.  Brilliant Evening Star Venus, Saturn, and Jupiter are in the sky after sunset.

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