2021, January 14: Brilliant Morning Star Venus

Venus, January 14, 2021
2021, January 14: Thirty minutes before sunrise, Venus is low in the east-southeast.

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.

RECENT ARTICLES

The Pleiades star cluster.

2022, June 23: Rare Morning Planet Parade, Venus – Pleiades Conjunction

June 23, 2022: The five bright morning planets parade across the morning sky in a rare pattern.  Venus passes the Pleiades star cluster before daybreak.

Keep reading
Jupiter and Saturn, December 10, 2020

2022, June 22:  Artemis, Ares Dance, Morning Planets

June 22, 2022: The thick crescent moon is near Mars in the east-southeast before sunrise.  Spot the five bright planets in order from the sun before daybreak.

Keep reading
2021, July 2: Sunrise!

2022, June 21:  Evening Planet Parade Visibility, Summer Solstice

June 21, 2022: How frequently are the five bright planets visible in their order from the sun after sundown?  Five the morning planet parade in the eastern sky before sunrise.

Keep reading


Categories: Astronomy, Sky Watching

Tags: , , ,

Leave a Reply

%d bloggers like this: