Planets TonightNeptune in 1954: brightness, position and events
Brightest+7.8around Apr 15
Closest (in table)29.311 au4385 million km
Farthest31.310 au
Events this year2
Brightest last year+7.8
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1954-04-15 14:07 | Opposition | +7.8 | 29.311 | Virgo | 178.2° |
| 1954-10-20 02:38 | Conjunction with the Sun | +8.0 | 31.312 | Virgo | 1.7° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +7.9 | 30.563 | Virgo | 74° W | Morning sky |
| Jan 15 | +7.9 | 30.323 | Virgo | 88° W | Morning sky |
| Feb 1 | +7.9 | 30.032 | Virgo | 106° W | Morning sky |
| Feb 15 | +7.9 | 29.808 | Virgo | 120° W | Morning sky |
| Mar 1 | +7.9 | 29.614 | Virgo | 134° W | Morning sky |
| Mar 15 | +7.9 | 29.461 | Virgo | 148° W | Morning sky |
| Apr 1 | +7.9 | 29.344 | Virgo | 166° W | Most of the night |
| Apr 15 | +7.8 | 29.311 | Virgo | 178° W | Most of the night |
| May 1 | +7.9 | 29.344 | Virgo | 164° E | Most of the night |
| May 15 | +7.9 | 29.433 | Virgo | 150° E | Most of the night |
| Jun 1 | +7.9 | 29.608 | Virgo | 134° E | Evening sky |
| Jun 15 | +7.9 | 29.796 | Virgo | 120° E | Evening sky |
| Jul 1 | +7.9 | 30.044 | Virgo | 104° E | Evening sky |
| Jul 15 | +nan | 30.277 | Virgo | 91° E | Evening sky |
| Aug 1 | +7.9 | 30.560 | Virgo | 75° E | Evening sky |
| Aug 15 | +8.0 | 30.778 | Virgo | 62° E | Evening sky |
| Sep 1 | +8.0 | 31.008 | Virgo | 46° E | Evening sky |
| Sep 15 | +8.0 | 31.156 | Virgo | 33° E | Evening sky |
| Oct 1 | +8.0 | 31.268 | Virgo | 18° E | Evening sky |
| Oct 15 | +8.0 | 31.310 | Virgo | 5° E | Too close to the Sun |
| Nov 1 | +8.0 | 31.287 | Virgo | 12° W | Too close to the Sun |
| Nov 15 | +8.0 | 31.207 | Virgo | 26° W | Morning sky |
| Dec 1 | +8.0 | 31.053 | Virgo | 41° W | Morning sky |
| Dec 15 | +8.0 | 30.872 | Virgo | 55° 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 1954 (magnitude +7.8); 2 conjunctions, oppositions or elongations occur this year.