Planets TonightNeptune in 1984: brightness, position and events
Brightest+7.8around Jun 1
Closest (in table)29.251 au4376 million km
Farthest31.233 au
Events this year2
Brightest last year+7.8
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1984-06-21 15:15 | Opposition | +7.8 | 29.245 | Sagittarius | 178.8° |
| 1984-12-23 04:10 | Conjunction with the Sun | +8.0 | 31.241 | Sagittarius | 1.1° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +8.0 | 31.230 | Sagittarius | 11° W | Too close to the Sun |
| Jan 15 | +8.0 | 31.158 | Sagittarius | 24° W | Morning sky |
| Feb 1 | +8.0 | 31.000 | Sagittarius | 41° W | Morning sky |
| Feb 15 | +7.9 | 30.822 | Sagittarius | 55° W | Morning sky |
| Mar 1 | +7.9 | 30.595 | Sagittarius | 70° W | Morning sky |
| Mar 15 | +7.9 | 30.361 | Sagittarius | 83° W | Morning sky |
| Apr 1 | +7.9 | 30.071 | Sagittarius | 100° W | Morning sky |
| Apr 15 | +7.9 | 29.841 | Sagittarius | 114° W | Morning sky |
| May 1 | +7.8 | 29.608 | Sagittarius | 130° W | Morning sky |
| May 15 | +7.8 | 29.443 | Sagittarius | 144° W | Morning sky |
| Jun 1 | +7.8 | 29.305 | Sagittarius | 160° W | Most of the night |
| Jun 15 | +7.8 | 29.251 | Sagittarius | 174° W | Most of the night |
| Jul 1 | +7.8 | 29.259 | Sagittarius | 170° E | Most of the night |
| Jul 15 | +7.8 | 29.325 | Sagittarius | 157° E | Most of the night |
| Aug 1 | +7.8 | 29.476 | Sagittarius | 140° E | Evening sky |
| Aug 15 | +7.8 | 29.649 | Sagittarius | 126° E | Evening sky |
| Sep 1 | +7.9 | 29.903 | Sagittarius | 110° E | Evening sky |
| Sep 15 | +7.9 | 30.134 | Sagittarius | 96° E | Evening sky |
| Oct 1 | +7.9 | 30.406 | Sagittarius | 81° E | Evening sky |
| Oct 15 | +7.9 | 30.634 | Sagittarius | 67° E | Evening sky |
| Nov 1 | +7.9 | 30.880 | Sagittarius | 50° E | Evening sky |
| Nov 15 | +8.0 | 31.044 | Sagittarius | 37° E | Evening sky |
| Dec 1 | +8.0 | 31.175 | Sagittarius | 21° E | Evening sky |
| Dec 15 | +8.0 | 31.233 | Sagittarius | 8° E | 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
Neptune is brightest around June 1984 (magnitude +7.8); 2 conjunctions, oppositions or elongations occur this year.