By Halloween, the disk spans 26″ and is less than 50 percent lit. 27 and reveals a lovely half-illuminated phase. 1, the planet subtends 19″ and is 62 percent lit. An hour after sunset, Venus is always between 7° and 11° high.Īny telescope reveals its changing appearance. However, this does little to increase the planet’s altitude after sunset, due to the low angle of the ecliptic to the western horizon. Venus reaches its greatest elongation east of the Sun Oct. 21 and stays there through the end of the month. 15 crossing a small corner of Ophiuchus, before returning to Scorpius and passing 1.5° north of Antares on the 16th. The planet lies in Libra for the first week of October and crosses into Scorpius Oct. It begins the month at magnitude –4.2 and brightens to –4.5 by Oct. Venus is visible soon after sunset, low in the southwest. And late-evening binocular views of Uranus and Neptune beckon more adventurous observers. Jupiter and Saturn dominate the evening sky, visible through midnight. Venus, by contrast, hangs low in the southwestern sky all month. Mercury springs into action in the last two weeks of October, offering its best morning appearance for 2021.
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