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2021, October 8:  Venus, Moon Group With Scorpion

The Crescent Moon, November 16, 2020

The Crescent Moon, November 16, 2020

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October 8, 2021:  The crescent moon approaches Venus in the western sky this evening, leading up to tomorrow’s close grouping of Venus, the crescent moon, and the three stars of the Scorpion’s head.

Chart Caption – 2021, October 8: The moon moves in toward Venus for close grouping with the head of Scorpius.

2021, October 8: The crescent moon and Venus with Scorpius.

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by Jeffrey L. Hunt

Chicago, Illinois:  Sunrise, 6:55 a.m. CDT; Sunset, 6:20 p.m. CDT.  Check local sources for sunrise and sunset times for your location.

Daily notes for October 2021

At forty-five minutes after sunset, look for brilliant Venus and the crescent moon, 9% illuminated, in the southwestern sky after sunset.

Venus is 1.3° to the lower right of Dschubba, “the forehead of the scorpion.”

Tomorrow evening, Venus, the crescent moon, and the three stars of the Scorpion’s head – Graffias, Dschubba, Pi Scorpii (π Sco on the chart) – fit into a binocular field of view.  This does not occur again until October 10, 2029.

The rarity of this event is affected by the separation of the three stars.  They span about 6.5°, over 90% of a binocular’s field of view.  The are a stationary target for the moon and planets to move through.

For example, during bright morning twilight on December 14, 2028, the moon is to the upper left of π Sco, but Venus is 4.2° to the upper right of Graffias, to far away to fit into the field of view with the three stars and the moon. 

The moon is near the trio of stars each month.  Venus passes at least yearly.  The combination of Venus, and the moon with the three stars is a rarity.

At this hour look low in the southeastern sky for bright Jupiter and Saturn.

Detailed Daily Note: The moon is at perigee at 12:28 p.m. CDT, 225,797.4 miles away.  Forty-five minutes after sunset, Venus is over 9° up in the southwest, 1.3° to the lower right of Dschubba and 8.5° to the lower right of Antares.  The moon (2.5d, 9%), 7.0° up in the west-southwest, is 11.8° to the lower right of Venus.  Tomorrow evening, Venus, the moon, Graffias (β Sco, m = 2.5, Dschubba, and Pi Scorpii (π Sco, m = 2.9) fit into a binocular field.  This is an infrequent event.  See tomorrow’s note for more details.  At this hour, bright Jupiter is nearly 25° up in the southeast.  Saturn, over 26° up in the south-southeast, is 15.5° to the right of Jupiter.  Two hours after sunset, use a binocular to spot the sidereal backdrop with the giant planets.  Jupiter, over 31° up in the south-southeast, is 3.7° to the lower right of μ Cap, 1.9° to the upper right of Deneb Algedi, and 1.4° to the upper left of Nashira.  Saturn, about 29° up in the south and slightly west of the meridian, is 1.5° to the lower right of υ Cap.  Both giant planets are retrograding in Capricornus, although Saturn’s westward trek is very slow.  The Ringed Wonder ends its retrograde in two evenings to begin its direct motion.

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