Planets TonightNeptune in 2013: brightness, position and events
Brightest+7.7around Sep 1
Closest (in table)28.978 au4335 million km
Farthest30.971 au
Events this year2
Brightest last year+7.7
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 2013-02-21 16:18 | Conjunction with the Sun | +7.8 | 30.978 | Aquarius | 0.6° |
| 2013-08-27 10:42 | Opposition | +7.7 | 28.973 | Aquarius | 179.3° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +7.8 | 30.610 | Aquarius | 50° E | Evening sky |
| Jan 15 | +7.8 | 30.777 | Aquarius | 36° E | Evening sky |
| Feb 1 | +7.8 | 30.916 | Aquarius | 20° E | Evening sky |
| Feb 15 | +7.8 | 30.971 | Aquarius | 6° E | Too close to the Sun |
| Mar 1 | +7.8 | 30.971 | Aquarius | 8° W | Too close to the Sun |
| Mar 15 | +7.8 | 30.914 | Aquarius | 21° W | Morning sky |
| Apr 1 | +7.8 | 30.776 | Aquarius | 37° W | Morning sky |
| Apr 15 | +7.8 | 30.613 | Aquarius | 51° W | Morning sky |
| May 1 | +7.8 | 30.384 | Aquarius | 66° W | Morning sky |
| May 15 | +7.8 | 30.159 | Aquarius | 79° W | Morning sky |
| Jun 1 | +7.8 | 29.873 | Aquarius | 95° W | Morning sky |
| Jun 15 | +7.7 | 29.642 | Aquarius | 109° W | Morning sky |
| Jul 1 | +7.7 | 29.401 | Aquarius | 124° W | Morning sky |
| Jul 15 | +7.7 | 29.224 | Aquarius | 138° W | Morning sky |
| Aug 1 | +7.7 | 29.065 | Aquarius | 154° W | Most of the night |
| Aug 15 | +7.7 | 28.992 | Aquarius | 168° W | Most of the night |
| Sep 1 | +7.7 | 28.978 | Aquarius | 175° E | Most of the night |
| Sep 15 | +7.7 | 29.030 | Aquarius | 161° E | Most of the night |
| Oct 1 | +7.7 | 29.157 | Aquarius | 145° E | Evening sky |
| Oct 15 | +7.7 | 29.320 | Aquarius | 131° E | Evening sky |
| Nov 1 | +7.7 | 29.567 | Aquarius | 114° E | Evening sky |
| Nov 15 | +7.8 | 29.799 | Aquarius | 100° E | Evening sky |
| Dec 1 | +7.8 | 30.074 | Aquarius | 84° E | Evening sky |
| Dec 15 | +7.8 | 30.309 | Aquarius | 70° 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 September 2013 (magnitude +7.7); 2 conjunctions, oppositions or elongations occur this year.