Planets TonightNeptune in 2004: brightness, position and events
Brightest+7.7around Jul 15
Closest (in table)29.058 au4347 million km
Farthest31.059 au
Events this year2
Brightest last year+7.7
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 2004-02-02 18:28 | Conjunction with the Sun | +7.8 | 31.060 | Capricornus | 0.0° |
| 2004-08-06 12:07 | Opposition | +7.7 | 29.055 | Capricornus | 179.9° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +7.8 | 30.907 | Capricornus | 32° E | Evening sky |
| Jan 15 | +7.8 | 31.009 | Capricornus | 18° E | Evening sky |
| Feb 1 | +7.8 | 31.059 | Capricornus | 1° E | Too close to the Sun |
| Feb 15 | +7.8 | 31.038 | Capricornus | 12° W | Too close to the Sun |
| Mar 1 | +7.8 | 30.953 | Capricornus | 27° W | Morning sky |
| Mar 15 | +7.8 | 30.822 | Capricornus | 40° W | Morning sky |
| Apr 1 | +7.8 | 30.607 | Capricornus | 57° W | Morning sky |
| Apr 15 | +7.8 | 30.394 | Capricornus | 70° W | Morning sky |
| May 1 | +7.8 | 30.130 | Capricornus | 86° W | Morning sky |
| May 15 | +7.8 | 29.893 | Capricornus | 99° W | Morning sky |
| Jun 1 | +7.8 | 29.619 | Capricornus | 116° W | Morning sky |
| Jun 15 | +7.7 | 29.419 | Capricornus | 129° W | Morning sky |
| Jul 1 | +7.7 | 29.235 | Capricornus | 145° W | Morning sky |
| Jul 15 | +7.7 | 29.123 | Capricornus | 158° W | Most of the night |
| Aug 1 | +7.7 | 29.058 | Capricornus | 175° W | Most of the night |
| Aug 15 | +7.7 | 29.068 | Capricornus | 171° E | Most of the night |
| Sep 1 | +7.7 | 29.157 | Capricornus | 154° E | Most of the night |
| Sep 15 | +7.7 | 29.287 | Capricornus | 140° E | Evening sky |
| Oct 1 | +7.7 | 29.490 | Capricornus | 124° E | Evening sky |
| Oct 15 | +7.8 | 29.704 | Capricornus | 110° E | Evening sky |
| Nov 1 | +7.8 | 29.989 | Capricornus | 94° E | Evening sky |
| Nov 15 | +7.8 | 30.229 | Capricornus | 80° E | Evening sky |
| Dec 1 | +7.8 | 30.490 | Capricornus | 64° E | Evening sky |
| Dec 15 | +7.8 | 30.692 | Capricornus | 50° 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 2004 (magnitude +7.7); 2 conjunctions, oppositions or elongations occur this year.