Planets TonightMercury in 1984: brightness, position and events
Brightest-1.5around Mar 15
Closest (in table)0.586 au88 million km
Farthest1.426 au
Events this year12
Brightest last year-1.6
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1984-01-22 13:25 | Greatest western elongation (morning) | -0.1 | 1.007 | Sagittarius | 24.3° |
| 1984-03-09 02:31 | Superior conjunction | -1.8 | 1.361 | Aquarius | 1.6° |
| 1984-04-03 11:58 | Greatest eastern elongation (evening) | -0.0 | 0.885 | Aries | 19.1° |
| 1984-04-22 13:49 | Inferior conjunction | +6.7 | 0.572 | Aries | 1.5° |
| 1984-05-20 05:17 | Greatest western elongation (morning) | +0.5 | 0.821 | Cetus | 25.6° |
| 1984-06-23 11:23 | Superior conjunction | -2.3 | 1.325 | Gemini | 1.1° |
| 1984-08-01 08:43 | Greatest eastern elongation (evening) | +0.4 | 0.876 | Leo | 27.3° |
| 1984-08-28 23:32 | Inferior conjunction | +5.4 | 0.627 | Sextans | 4.1° |
| 1984-09-14 10:14 | Greatest western elongation (morning) | -0.3 | 0.940 | Leo | 17.9° |
| 1984-10-11 02:35 | Superior conjunction | -1.6 | 1.411 | Virgo | 1.0° |
| 1984-11-26 02:55 | Greatest eastern elongation (evening) | -0.3 | 1.016 | Ophiuchus | 21.8° |
| 1984-12-14 23:27 | Inferior conjunction | +6.1 | 0.677 | Ophiuchus | 1.8° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +5.4 | 0.674 | Sagittarius | 3° W | Too close to the Sun |
| Jan 15 | +0.1 | 0.872 | Sagittarius | 23° W | Morning sky |
| Feb 1 | -0.2 | 1.165 | Sagittarius | 23° W | Morning sky |
| Feb 15 | -0.5 | 1.314 | Capricornus | 17° W | Morning sky |
| Mar 1 | -1.2 | 1.378 | Aquarius | 7° W | Too close to the Sun |
| Mar 15 | -1.5 | 1.305 | Pisces | 6° E | Too close to the Sun |
| Apr 1 | -0.3 | 0.937 | Aries | 19° E | Evening sky |
| Apr 15 | +2.9 | 0.635 | Aries | 11° E | Too close to the Sun |
| May 1 | +2.9 | 0.586 | Pisces | 14° W | Too close to the Sun |
| May 15 | +0.7 | 0.746 | Pisces | 25° W | Morning sky |
| Jun 1 | -0.2 | 1.039 | Aries | 22° W | Morning sky |
| Jun 15 | -1.4 | 1.270 | Taurus | 10° W | Too close to the Sun |
| Jul 1 | -1.3 | 1.294 | Gemini | 10° E | Too close to the Sun |
| Jul 15 | -0.3 | 1.124 | Cancer | 22° E | Evening sky |
| Aug 1 | +0.4 | 0.874 | Leo | 27° E | Evening sky |
| Aug 15 | +1.2 | 0.686 | Leo | 21° E | Evening sky |
| Sep 1 | +3.9 | 0.657 | Leo | 7° W | Too close to the Sun |
| Sep 15 | -0.4 | 0.970 | Leo | 18° W | Morning sky |
| Oct 1 | -1.3 | 1.325 | Virgo | 8° W | Too close to the Sun |
| Oct 15 | -1.3 | 1.426 | Virgo | 3° E | Too close to the Sun |
| Nov 1 | -0.6 | 1.374 | Libra | 13° E | Too close to the Sun |
| Nov 15 | -0.4 | 1.215 | Ophiuchus | 20° E | Evening sky |
| Dec 1 | -0.0 | 0.894 | Sagittarius | 21° E | Evening sky |
| Dec 15 | +5.8 | 0.678 | Ophiuchus | 2° W | Too close to the Sun |
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
Mercury is brightest around March 1984 (magnitude -1.5); 12 conjunctions, oppositions or elongations occur this year.