Planets TonightJupiter in 1955: brightness, position and events
Brightest-2.7around Jan 15
Closest (in table)4.257 au637 million km
Farthest6.323 au
Events this year2
Brightest last year-2.8
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1955-01-16 05:00 | Opposition | -2.6 | 4.257 | Gemini | 179.6° |
| 1955-08-04 14:30 | Conjunction with the Sun | -1.8 | 6.324 | Cancer | 0.6° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | -2.6 | 4.286 | Gemini | 163° W | Most of the night |
| Jan 15 | -2.7 | 4.257 | Gemini | 179° W | Most of the night |
| Feb 1 | -2.6 | 4.303 | Gemini | 161° E | Most of the night |
| Feb 15 | -2.5 | 4.406 | Gemini | 146° E | Evening sky |
| Mar 1 | -2.5 | 4.558 | Gemini | 130° E | Evening sky |
| Mar 15 | -2.4 | 4.747 | Gemini | 116° E | Evening sky |
| Apr 1 | -2.2 | 5.007 | Gemini | 100° E | Evening sky |
| Apr 15 | -2.1 | 5.232 | Gemini | 87° E | Evening sky |
| May 1 | -2.0 | 5.484 | Gemini | 73° E | Evening sky |
| May 15 | -1.9 | 5.692 | Gemini | 61° E | Evening sky |
| Jun 1 | -1.9 | 5.914 | Cancer | 48° E | Evening sky |
| Jun 15 | -1.8 | 6.067 | Cancer | 37° E | Evening sky |
| Jul 1 | -1.8 | 6.201 | Cancer | 25° E | Evening sky |
| Jul 15 | -1.8 | 6.280 | Cancer | 15° E | Too close to the Sun |
| Aug 1 | -1.8 | 6.323 | Cancer | 2° E | Too close to the Sun |
| Aug 15 | -1.8 | 6.314 | Cancer | 8° W | Too close to the Sun |
| Sep 1 | -1.8 | 6.251 | Cancer | 21° W | Morning sky |
| Sep 15 | -1.8 | 6.155 | Leo | 31° W | Morning sky |
| Oct 1 | -1.8 | 6.003 | Leo | 44° W | Morning sky |
| Oct 15 | -1.9 | 5.836 | Leo | 55° W | Morning sky |
| Nov 1 | -2.0 | 5.600 | Leo | 70° W | Morning sky |
| Nov 15 | -2.0 | 5.386 | Leo | 82° W | Morning sky |
| Dec 1 | -2.1 | 5.135 | Leo | 97° W | Morning sky |
| Dec 15 | -2.2 | 4.921 | Leo | 111° 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
Jupiter is brightest around January 1955 (magnitude -2.7); 2 conjunctions, oppositions or elongations occur this year.