Planets TonightNeptune in 1988: brightness, position and events
Brightest+7.8around Jul 1
Closest (in table)29.208 au4370 million km
Farthest31.212 au
Events this year2
Brightest last year+7.8
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1988-06-30 18:45 | Opposition | +7.8 | 29.208 | Sagittarius | 179.0° |
| 1988-12-31 17:38 | Conjunction with the Sun | +7.9 | 31.203 | Sagittarius | 0.9° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +7.9 | 31.212 | Sagittarius | 2° W | Too close to the Sun |
| Jan 15 | +7.9 | 31.174 | Sagittarius | 16° W | Morning sky |
| Feb 1 | +7.9 | 31.054 | Sagittarius | 33° W | Morning sky |
| Feb 15 | +7.9 | 30.902 | Sagittarius | 46° W | Morning sky |
| Mar 1 | +7.9 | 30.695 | Sagittarius | 61° W | Morning sky |
| Mar 15 | +7.9 | 30.473 | Sagittarius | 75° W | Morning sky |
| Apr 1 | +nan | 30.185 | Sagittarius | 91° W | Morning sky |
| Apr 15 | +7.8 | 29.948 | Sagittarius | 105° W | Morning sky |
| May 1 | +7.8 | 29.697 | Sagittarius | 121° W | Morning sky |
| May 15 | +7.8 | 29.507 | Sagittarius | 135° W | Morning sky |
| Jun 1 | +7.8 | 29.332 | Sagittarius | 151° W | Most of the night |
| Jun 15 | +7.8 | 29.242 | Sagittarius | 165° W | Most of the night |
| Jul 1 | +7.8 | 29.208 | Sagittarius | 179° E | Most of the night |
| Jul 15 | +7.8 | 29.239 | Sagittarius | 166° E | Most of the night |
| Aug 1 | +7.8 | 29.350 | Sagittarius | 149° E | Evening sky |
| Aug 15 | +7.8 | 29.496 | Sagittarius | 135° E | Evening sky |
| Sep 1 | +7.8 | 29.727 | Sagittarius | 119° E | Evening sky |
| Sep 15 | +7.8 | 29.948 | Sagittarius | 105° E | Evening sky |
| Oct 1 | +7.9 | 30.218 | Sagittarius | 89° E | Evening sky |
| Oct 15 | +7.9 | 30.454 | Sagittarius | 76° E | Evening sky |
| Nov 1 | +7.9 | 30.720 | Sagittarius | 59° E | Evening sky |
| Nov 15 | +7.9 | 30.908 | Sagittarius | 45° E | Evening sky |
| Dec 1 | +7.9 | 31.073 | Sagittarius | 30° E | Evening sky |
| Dec 15 | +7.9 | 31.165 | Sagittarius | 16° 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
Neptune is brightest around July 1988 (magnitude +7.8); 2 conjunctions, oppositions or elongations occur this year.