Planets TonightNeptune in 1977: brightness, position and events
Brightest+7.8around May 15
Closest (in table)29.279 au4380 million km
Farthest31.266 au
Events this year2
Brightest last year+7.8
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1977-06-05 22:49 | Opposition | +7.8 | 29.275 | Ophiuchus | 178.5° |
| 1977-12-08 10:47 | Conjunction with the Sun | +8.0 | 31.272 | Ophiuchus | 1.4° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +8.0 | 31.172 | Ophiuchus | 26° W | Morning sky |
| Jan 15 | +8.0 | 31.041 | Ophiuchus | 40° W | Morning sky |
| Feb 1 | +8.0 | 30.823 | Ophiuchus | 57° W | Morning sky |
| Feb 15 | +8.0 | 30.607 | Ophiuchus | 70° W | Morning sky |
| Mar 1 | +7.9 | 30.372 | Ophiuchus | 84° W | Morning sky |
| Mar 15 | +7.9 | 30.131 | Ophiuchus | 98° W | Morning sky |
| Apr 1 | +7.9 | 29.852 | Ophiuchus | 115° W | Morning sky |
| Apr 15 | +7.9 | 29.648 | Ophiuchus | 129° W | Morning sky |
| May 1 | +7.9 | 29.459 | Ophiuchus | 145° W | Morning sky |
| May 15 | +7.8 | 29.345 | Ophiuchus | 159° W | Most of the night |
| Jun 1 | +7.8 | 29.279 | Ophiuchus | 175° W | Most of the night |
| Jun 15 | +7.8 | 29.287 | Ophiuchus | 170° E | Most of the night |
| Jul 1 | +7.9 | 29.366 | Ophiuchus | 155° E | Most of the night |
| Jul 15 | +7.9 | 29.490 | Ophiuchus | 141° E | Evening sky |
| Aug 1 | +7.9 | 29.699 | Ophiuchus | 125° E | Evening sky |
| Aug 15 | +7.9 | 29.908 | Ophiuchus | 111° E | Evening sky |
| Sep 1 | +nan | 30.187 | Ophiuchus | 95° E | Evening sky |
| Sep 15 | +7.9 | 30.424 | Ophiuchus | 81° E | Evening sky |
| Oct 1 | +8.0 | 30.683 | Ophiuchus | 66° E | Evening sky |
| Oct 15 | +8.0 | 30.886 | Ophiuchus | 52° E | Evening sky |
| Nov 1 | +8.0 | 31.085 | Ophiuchus | 36° E | Evening sky |
| Nov 15 | +8.0 | 31.200 | Ophiuchus | 22° E | Evening sky |
| Dec 1 | +8.0 | 31.266 | Ophiuchus | 7° E | Too close to the Sun |
| Dec 15 | +8.0 | 31.264 | Ophiuchus | 7° 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
Neptune is brightest around May 1977 (magnitude +7.8); 2 conjunctions, oppositions or elongations occur this year.