Planets TonightMars in 1999: brightness, position and events
Brightest-1.7around May 1
Closest (in table)0.579 au87 million km
Farthest1.756 au
Events this year1
Brightest last year+1.2
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1999-04-25 02:37 | Opposition | -1.7 | 0.583 | Virgo | 178.7° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +1.0 | 1.491 | Virgo | 82° W | Morning sky |
| Jan 15 | +0.8 | 1.349 | Virgo | 89° W | Morning sky |
| Feb 1 | +0.5 | 1.177 | Virgo | 100° W | Morning sky |
| Feb 15 | +0.2 | 1.037 | Virgo | 109° W | Morning sky |
| Mar 1 | -0.1 | 0.905 | Libra | 120° W | Morning sky |
| Mar 15 | -0.5 | 0.786 | Libra | 132° W | Morning sky |
| Apr 1 | -1.1 | 0.669 | Libra | 150° W | Morning sky |
| Apr 15 | -1.5 | 0.606 | Libra | 167° W | Most of the night |
| May 1 | -1.7 | 0.579 | Virgo | 171° E | Most of the night |
| May 15 | -1.4 | 0.595 | Virgo | 153° E | Most of the night |
| Jun 1 | -1.0 | 0.655 | Virgo | 134° E | Evening sky |
| Jun 15 | -0.8 | 0.725 | Virgo | 122° E | Evening sky |
| Jul 1 | -0.5 | 0.817 | Virgo | 110° E | Evening sky |
| Jul 15 | -0.2 | 0.902 | Virgo | 102° E | Evening sky |
| Aug 1 | -0.0 | 1.006 | Libra | 93° E | Evening sky |
| Aug 15 | +0.1 | 1.090 | Libra | 87° E | Evening sky |
| Sep 1 | +0.3 | 1.189 | Libra | 81° E | Evening sky |
| Sep 15 | +0.4 | 1.268 | Scorpius | 76° E | Evening sky |
| Oct 1 | +0.5 | 1.356 | Ophiuchus | 71° E | Evening sky |
| Oct 15 | +0.6 | 1.432 | Sagittarius | 67° E | Evening sky |
| Nov 1 | +0.7 | 1.522 | Sagittarius | 63° E | Evening sky |
| Nov 15 | +0.8 | 1.596 | Sagittarius | 59° E | Evening sky |
| Dec 1 | +0.9 | 1.681 | Capricornus | 55° E | Evening sky |
| Dec 15 | +0.9 | 1.756 | Capricornus | 52° E | Evening 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 May 1999 (magnitude -1.7); 1 conjunctions, oppositions or elongations occur this year.