January 14, 2021: Venus is slowly disappearing from the morning sky. It is low in the southeast during bright morning twilight.
by Jeffrey L. Hunt
Chicago, Illinois: Sunrise, 7:16 a.m. CST; Sunset, 4:44 p.m. CST. Check local sources for sunrise and sunset times for your location.
Brilliant Venus rises later each morning. It is losing about 2 minutes of rising time each morning compared to the sun. The result is that it appears lower in the sky. Venus is less than 5° in altitude in the southeast at 30 minutes before sunrise.
This morning Venus rises at Nautical Twilight, a little over an hour before sunrise. This occurs when the sun is 12° below the horizon. The sky is fairly dark, but there is some illumination from the sun in the eastern sky. At this time, “only general outlines of ground objects are distinguishable; for navigation purposes, the horizon is barely visible,” according to the U.S. Naval Observatory.
Venus is becoming more difficult to see. It may be visible at this time interval (30 minutes) before sunrise until January 20 without optical aid. Afterwards, a binocular may be necessary.
Venus passes Saturn and Jupiter next month during the daytime. The conjunctions are easily observable with a small telescope.
Venus does not pass fully into the sun’s brilliant light until March 26. Afterwards, it appears in the evening sky later in the year.
Read about Venus during January.
Detailed Note: Venus rises before Nautical Twilight, 64 minutes before sunrise. It is less than 5° in altitude in the southeast at 30 minutes before sunrise. Depending on the weather and the view from your location, Venus may be visible low in the southeast until January 20 (or later) without optical assistance at about 30 minutes before sunrise. What is the last date that you see the planet without a binocular or telescope before sunrise? Venus does not reach its superior conjunction until March 26.
Read more about the planets during January.
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.
October 7, 2021: The lunar crescent returns to the evening sky for a short visit in the western sky after sunset. The bright planet pack – Venus, Jupiter, and Saturn – are visible during the early evening.
Mars is at its solar conjunction on October 7, 2021. It begins a slow return into the morning sky. By year’s end it appears low in the southeastern sky with the moon.
October 6, 2021: The moon is at its New moon phase today. This evening look for the three bright planets after sunset.
October 5, 2021: Before sunrise, a very thin moon is visible in the eastern sky. The evening planet pack – Evening Star Venus, Jupiter, and Saturn – are visible at the same time after sundown.