Planets TonightMars in 2021: brightness, position and events
Brightest-0.2around Jan 1
Closest (in table)0.900 au135 million km
Farthest2.637 au
Events this year1
Brightest last year-2.7
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 2021-10-08 13:00 | Conjunction with the Sun | +1.6 | 2.628 | Virgo | 0.7° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | -0.2 | 0.900 | Pisces | 106° E | Evening sky |
| Jan 15 | +0.1 | 1.030 | Aries | 99° E | Evening sky |
| Feb 1 | +0.4 | 1.193 | Aries | 90° E | Evening sky |
| Feb 15 | +0.7 | 1.331 | Aries | 84° E | Evening sky |
| Mar 1 | +0.9 | 1.468 | Taurus | 78° E | Evening sky |
| Mar 15 | +1.1 | 1.603 | Taurus | 72° E | Evening sky |
| Apr 1 | +1.3 | 1.762 | Taurus | 65° E | Evening sky |
| Apr 15 | +1.4 | 1.887 | Taurus | 60° E | Evening sky |
| May 1 | +1.6 | 2.022 | Gemini | 54° E | Evening sky |
| May 15 | +1.7 | 2.132 | Gemini | 49° E | Evening sky |
| Jun 1 | +1.8 | 2.252 | Gemini | 43° E | Evening sky |
| Jun 15 | +1.8 | 2.341 | Cancer | 38° E | Evening sky |
| Jul 1 | +1.8 | 2.429 | Cancer | 33° E | Evening sky |
| Jul 15 | +1.8 | 2.494 | Leo | 28° E | Evening sky |
| Aug 1 | +1.8 | 2.557 | Leo | 22° E | Evening sky |
| Aug 15 | +1.8 | 2.596 | Leo | 18° E | Evening sky |
| Sep 1 | +1.8 | 2.626 | Leo | 12° E | Too close to the Sun |
| Sep 15 | +1.7 | 2.637 | Virgo | 8° E | Too close to the Sun |
| Oct 1 | +1.6 | 2.635 | Virgo | 2° E | Too close to the Sun |
| Oct 15 | +1.6 | 2.619 | Virgo | 2° W | Too close to the Sun |
| Nov 1 | +1.6 | 2.585 | Virgo | 8° W | Too close to the Sun |
| Nov 15 | +1.6 | 2.544 | Libra | 12° W | Too close to the Sun |
| Dec 1 | +1.6 | 2.486 | Libra | 18° W | Morning sky |
| Dec 15 | +1.6 | 2.425 | Libra | 22° W | Morning sky |
Computed with the JPL DE421 ephemeris and Skyfield (times in JST). Magnitude and distance are for 12:00 JST on each date. Visibility is a rough guide for mid-northern latitudes such as Japan.
About this page
Mars is brightest around January 2021 (magnitude -0.2); 1 conjunctions, oppositions or elongations occur this year.