Planets TonightMercury in 1958: brightness, position and events
Brightest-1.8around Jun 15
Closest (in table)0.588 au88 million km
Farthest1.422 au
Events this year13
Brightest last year-1.9
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 1958-01-16 12:39 | Greatest western elongation (morning) | -0.2 | 1.011 | Sagittarius | 23.9° |
| 1958-03-04 05:11 | Superior conjunction | -1.8 | 1.366 | Aquarius | 1.7° |
| 1958-03-29 16:05 | Greatest eastern elongation (evening) | -0.1 | 0.891 | Pisces | 18.9° |
| 1958-04-17 03:44 | Inferior conjunction | +6.5 | 0.578 | Pisces | 1.9° |
| 1958-05-14 23:33 | Greatest western elongation (morning) | +0.4 | 0.824 | Pisces | 26.0° |
| 1958-06-19 01:43 | Superior conjunction | -2.3 | 1.324 | Taurus | 1.0° |
| 1958-07-27 06:36 | Greatest eastern elongation (evening) | +0.4 | 0.866 | Leo | 27.1° |
| 1958-08-24 00:09 | Inferior conjunction | +5.4 | 0.621 | Leo | 4.3° |
| 1958-09-09 17:50 | Greatest western elongation (morning) | -0.2 | 0.934 | Leo | 18.0° |
| 1958-10-05 21:30 | Superior conjunction | -1.7 | 1.405 | Virgo | 1.2° |
| 1958-11-21 04:41 | Greatest eastern elongation (evening) | -0.2 | 1.018 | Ophiuchus | 22.2° |
| 1958-12-10 12:35 | Inferior conjunction | +6.2 | 0.678 | Ophiuchus | 1.6° |
| 1958-12-29 23:26 | Greatest western elongation (morning) | -0.3 | 1.016 | Ophiuchus | 22.4° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +1.5 | 0.722 | Sagittarius | 14° W | Too close to the Sun |
| Jan 15 | -0.2 | 0.992 | Sagittarius | 24° W | Morning sky |
| Feb 1 | -0.3 | 1.248 | Sagittarius | 20° W | Morning sky |
| Feb 15 | -0.6 | 1.360 | Capricornus | 13° W | Too close to the Sun |
| Mar 1 | -1.6 | 1.378 | Aquarius | 3° W | Too close to the Sun |
| Mar 15 | -1.4 | 1.238 | Pisces | 11° E | Too close to the Sun |
| Apr 1 | +0.3 | 0.819 | Pisces | 18° E | Evening sky |
| Apr 15 | +5.8 | 0.588 | Pisces | 4° E | Too close to the Sun |
| May 1 | +1.5 | 0.638 | Pisces | 20° W | Morning sky |
| May 15 | +0.4 | 0.833 | Pisces | 26° W | Morning sky |
| Jun 1 | -0.5 | 1.128 | Aries | 19° W | Morning sky |
| Jun 15 | -1.8 | 1.311 | Taurus | 4° W | Too close to the Sun |
| Jul 1 | -1.0 | 1.242 | Gemini | 14° E | Too close to the Sun |
| Jul 15 | -0.0 | 1.044 | Cancer | 24° E | Evening sky |
| Aug 1 | +0.6 | 0.791 | Leo | 26° E | Evening sky |
| Aug 15 | +2.4 | 0.633 | Sextans | 15° E | Evening sky |
| Sep 1 | +1.6 | 0.729 | Leo | 14° W | Too close to the Sun |
| Sep 15 | -0.8 | 1.092 | Leo | 16° W | Morning sky |
| Oct 1 | -1.5 | 1.374 | Virgo | 4° W | Too close to the Sun |
| Oct 15 | -1.0 | 1.422 | Virgo | 7° E | Too close to the Sun |
| Nov 1 | -0.4 | 1.325 | Libra | 16° E | Evening sky |
| Nov 15 | -0.3 | 1.130 | Scorpius | 21° E | Evening sky |
| Dec 1 | +0.6 | 0.788 | Ophiuchus | 17° E | Evening sky |
| Dec 15 | +2.0 | 0.716 | Ophiuchus | 11° W | Too close to the Sun |
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
Mercury is brightest around June 1958 (magnitude -1.8); 13 conjunctions, oppositions or elongations occur this year.