2020, October 23: Last Call for Venus and Mars in Morning Sky

2020, October 23: Venus shines from the eastern sky before sunrise. The planet is 3.2° to the lower right of Nu Virginis (ν Vir) and 3.0° above Beta Virginis (β Vir).

Mars and Morning Star Venus are nearing their opposition so that they do not appear together in the morning sky for the remainder of 2020.  In the evening sky, three planets – Mars, Jupiter, and Saturn – along with the moon, are easy to locate.

by Jeffrey L. Hunt

Chicago, Illinois:  Sunrise, 7:13 a.m. CDT; Sunset, 5:56 p.m. CDT.  Check local sources for sunrise and sunset times in different locations.

International Space Station Pass (Chicago, Illinois area) begins at 6:02 a.m. CDT low in the south-southwest.  It reaches its highest point about 44° up in the southeast at 6:05 a.m. CDT.  It disappears at 6:08 a.m. CDT about 10° up in the east-northeast.  Find an unobstructed view to the south and east.  The ISS moves below Sirius in the south-southwest, beneath Regulus and above Venus in the east.  The station is brighter than Sirius and dimmer than Venus.  This is an excellent opportunity to see the passage of the ISS across the sky.

Morning: It’s time to make the “last call” to see Mars and Venus in the morning sky together for the rest of 2020.  Mars is low in the west 90 minutes before sunrise, while Venus is about 15° up in the east. On November 9, the planets are in opposition – appear in opposite directions in the sky.  Mars sets in the west as Venus rises in the east.  What is the last day you see Venus in the eastern sky and Mars in the western morning sky? When Venus moves back into the evening sky next year, they again appear in the sky at the same time.  As Venus rises higher, the starfield of Virgo becomes easier to see.  The planet is near the stars Nu Virginis (ν Vir) and Beta Virginis (β Vir).

Detailed morning note: Ninety minutes before sunrise, Mars is over 5° up in the west. The planet sets one hour before sunrise this morning.  At this hour, brilliant Venus is over 22° in altitude in the east-southeast. Venus is in Virgo. It moves through the constellation in 36 days. In the starfield, the planet is 3.2° to the lower right of ν Vir and 3.0° above β Vir. The moon reaches its First Quarter phase at 8:23 a.m. CDT.

See our summary about Venus during October 2020 and the feature article  about Venus as a Morning Star.

2020, October 23: The slightly gibbous moon is about 11° to the lower left of Saturn in the southern sky about one hour after sunset. The Jupiter – Saturn gap is 5.8°.

Evening: Mars, Jupiter, and Saturn are in the evening sky.  Jupiter and Saturn are in the south-southwest as a prelude to the Great Conjunction on December 21, 2020.  The Jupiter – Saturn gap is 5.8°.  Saturn is to the upper left of Jupiter. The planets are slowly moving eastward compared to the starry background of eastern Sagittarius.  (See the starry background for Jupiter and Saturn here.) Jupiter sets in the southwest before 10:45 p.m. CDT.  The slightly gibbous moon is to the lower left of Saturn. Farther eastward, bright Mars is retrograding among dim stars in Pisces. The Red Planet sets tomorrow morning about an hour before sunrise. (See our Mars summary for October here.)

Detailed evening note:One hour after sunset, the slightly gibbous moon (7.2 days after the New moon phase, 55% illuminated), 25.0° up in the south in southwest Capricornus, is 11° to the lower left of Saturn.  The Jupiter – Saturn gap is 5.8°. In the starfield, Saturn is 1.8° to the lower left of 56 Sgr.  Jupiter is 3.9° to the lower left of π Sgr and 0.6° below 50 Sgr.  At this hour, Mars is over 15° in altitude in the east. Two hours after sunset, Mars is 25° in altitude in the east-southeast. The Red Planet is 0.8° to the lower right of 80 Psc and 3.4° to the lower right of ε Psc.

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 October.

2021, May 22: Parading Five Planets

May 22, 2021: Five planets parade across the sky.  Jupiter and Saturn are in the southeast before sunrise. Evening Star Venus, Mercury and Mars are in the western sky after sunset.  A bright moon is in the southeastern sky.

2021, May 21: Evening Planet Ballet

May 21, 2021: Three bright planets are dancing in the western sky after sundown.  Evening Star Venus is entering the sky for a months-long residency after its solar conjunction two months ago.  Mercury is heading for a conjunction with Venus after its best evening appearance of the year.  Mars continues its eastward march in Gemini, but time is running out on its appearance as it approaches brighter evening twilight and a conjunction with Venus.

2021, May 21: Twilight Lengthens

May 21, 2021:  At the weather warms, daylight and twilight lengthen to diminish nighttime hours.  As the summer solstice approaches far northern latitudes do not have periods of darkness.  From the most northern latitudes, the sun does not set – the Land of the Midnight Sun.

2021, May 20: Evening Planet Dance

May 20, 2021:  Evening Star Venus, Mercury, and Mars continue their planetary dance in the western sky after sunset.  Begin looking for brilliant Venus about 30 minutes after sunset.  Fifteen minutes later, Mercury and Mars join the ballet.

2021, May 20: Morning Summer Triangle

May 20, 2021:  With two bright planets in the southeast before sunrise, the Summer Triangle – Vega, Altair, and Deneb – is high in the south as daylight approaches.

Categories: Astronomy, Sky Watching

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