Planets TonightNeptune in 1955: brightness, position and events
Brightest+7.8around Apr 15
Closest (in table)29.317 au4386 million km
Farthest31.311 au
Events this year2
Brightest last year+7.8
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1955-04-18 01:15 | Opposition | +7.8 | 29.316 | Virgo | 178.2° |
| 1955-10-22 12:58 | Conjunction with the Sun | +8.0 | 31.317 | Virgo | 1.7° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +8.0 | 30.608 | Virgo | 72° W | Morning sky |
| Jan 15 | +7.9 | 30.370 | Virgo | 86° W | Morning sky |
| Feb 1 | +7.9 | 30.077 | Virgo | 103° W | Morning sky |
| Feb 15 | +7.9 | 29.850 | Virgo | 118° W | Morning sky |
| Mar 1 | +7.9 | 29.650 | Virgo | 132° W | Morning sky |
| Mar 15 | +7.9 | 29.489 | Virgo | 146° W | Morning sky |
| Apr 1 | +7.9 | 29.361 | Virgo | 163° W | Most of the night |
| Apr 15 | +7.8 | 29.317 | Virgo | 177° W | Most of the night |
| May 1 | +7.9 | 29.339 | Virgo | 166° E | Most of the night |
| May 15 | +7.9 | 29.419 | Virgo | 153° E | Most of the night |
| Jun 1 | +7.9 | 29.583 | Virgo | 136° E | Evening sky |
| Jun 15 | +7.9 | 29.765 | Virgo | 122° E | Evening sky |
| Jul 1 | +7.9 | 30.008 | Virgo | 107° E | Evening sky |
| Jul 15 | +nan | 30.240 | Virgo | 94° E | Evening sky |
| Aug 1 | +7.9 | 30.524 | Virgo | 78° E | Evening sky |
| Aug 15 | +8.0 | 30.746 | Virgo | 64° E | Evening sky |
| Sep 1 | +8.0 | 30.982 | Virgo | 48° E | Evening sky |
| Sep 15 | +8.0 | 31.138 | Virgo | 35° E | Evening sky |
| Oct 1 | +8.0 | 31.260 | Virgo | 20° E | Evening sky |
| Oct 15 | +8.0 | 31.311 | Virgo | 7° E | Too close to the Sun |
| Nov 1 | +8.0 | 31.300 | Virgo | 10° W | Too close to the Sun |
| Nov 15 | +8.0 | 31.229 | Virgo | 23° W | Morning sky |
| Dec 1 | +8.0 | 31.085 | Virgo | 39° W | Morning sky |
| Dec 15 | +8.0 | 30.910 | Virgo | 53° W | Morning 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 April 1955 (magnitude +7.8); 2 conjunctions, oppositions or elongations occur this year.