Planets TonightPlanet events and lunar eclipses in 1991
Oppositions4
Greatest elongations9
Lunar eclipses4
Visible from Tokyo2at maximum
Planet events
| Date (JST) | Planet | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|---|
| 1991-01-01 00:51 | Uranus | Conjunction with the Sun | +5.8 | 20.428 | Sagittarius | 0.3° |
| 1991-01-05 12:21 | Neptune | Conjunction with the Sun | +7.9 | 31.185 | Sagittarius | 0.8° |
| 1991-01-14 18:06 | Mercury | Greatest western elongation (morning) | -0.2 | 1.012 | Sagittarius | 23.7° |
| 1991-01-18 16:44 | Saturn | Conjunction with the Sun | +0.5 | 10.973 | Sagittarius | 0.2° |
| 1991-01-29 09:26 | Jupiter | Opposition | -2.6 | 4.306 | Cancer | 179.2° |
| 1991-03-02 11:35 | Mercury | Superior conjunction | -1.8 | 1.369 | Aquarius | 1.8° |
| 1991-03-27 23:45 | Mercury | Greatest eastern elongation (evening) | -0.1 | 0.894 | Pisces | 18.8° |
| 1991-04-15 05:42 | Mercury | Inferior conjunction | +6.5 | 0.581 | Pisces | 2.1° |
| 1991-05-13 02:56 | Mercury | Greatest western elongation (morning) | +0.5 | 0.826 | Pisces | 26.2° |
| 1991-06-14 06:50 | Venus | Greatest eastern elongation (evening) | -4.4 | 0.707 | Cancer | 45.4° |
| 1991-06-17 13:37 | Mercury | Superior conjunction | -2.4 | 1.323 | Taurus | 1.0° |
| 1991-07-04 16:04 | Uranus | Opposition | +5.6 | 18.461 | Sagittarius | 179.6° |
| 1991-07-08 09:27 | Neptune | Opposition | +7.8 | 29.182 | Sagittarius | 179.2° |
| 1991-07-25 11:10 | Mercury | Greatest eastern elongation (evening) | +0.5 | 0.862 | Leo | 27.0° |
| 1991-07-27 09:21 | Saturn | Opposition | +0.1 | 8.947 | Capricornus | 179.5° |
| 1991-08-18 07:24 | Jupiter | Conjunction with the Sun | -1.7 | 6.366 | Leo | 0.8° |
| 1991-08-22 05:41 | Mercury | Inferior conjunction | +5.4 | 0.619 | Leo | 4.4° |
| 1991-08-23 05:20 | Venus | Inferior conjunction | -4.1 | 0.287 | Sextans | 8.2° |
| 1991-09-08 02:43 | Mercury | Greatest western elongation (morning) | -0.2 | 0.931 | Leo | 18.0° |
| 1991-10-04 01:39 | Mercury | Superior conjunction | -1.7 | 1.402 | Virgo | 1.2° |
| 1991-11-02 18:07 | Venus | Greatest western elongation (morning) | -4.5 | 0.690 | Leo | 46.5° |
| 1991-11-08 18:15 | Mars | Conjunction with the Sun | +1.4 | 2.552 | Libra | 0.1° |
| 1991-11-19 10:59 | Mercury | Greatest eastern elongation (evening) | -0.2 | 1.018 | Ophiuchus | 22.4° |
| 1991-12-08 23:57 | Mercury | Inferior conjunction | +6.2 | 0.678 | Ophiuchus | 1.5° |
| 1991-12-28 05:25 | Mercury | Greatest western elongation (morning) | -0.3 | 1.016 | Ophiuchus | 22.2° |
Lunar eclipses
| Maximum (JST) | Type | Umbral mag. | Tokyo |
|---|---|---|---|
| 1991-01-30 14:58 | Penumbral lunar eclipse | -0.11 | Moon below horizon |
| 1991-06-27 12:14 | Penumbral lunar eclipse | -0.76 | Moon below horizon |
| 1991-07-27 03:07 | Penumbral lunar eclipse | -0.81 | Moon up |
| 1991-12-21 19:33 | Partial lunar eclipse | 0.09 | Moon up |
Each planet this year
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
25 planetary conjunctions, oppositions and elongations and 4 lunar eclipses in 1991 (JST).