Celestial Phenomena in 2023
LST:UT+9h ΔT = 69s
Days after Oct. 15th, 1582 refer to the Gregorian Calendar and days before that refer to the Julian Calendar.
| Date | Time | Body | Phenom. | Ref. | Note |
|---|
| 2023-01-07 | 21:57 | Mercury | Inferior Conjunction | Sun | Δλ = 0° |
| 2023-01-13 | 05:12 | Mars | Stationary | | |
| 2023-01-18 | 20:49 | Mercury | Stationary | | |
| 2023-01-23 | 11:52 | Uranus | Stationary | | |
| 2023-01-30 | 15h | Mercury | Greatest Elongation West | Sun | -24° 58' |
| 2023-02-04 | 11:50 | Uranus | Eastern Quadrature | Sun | Δλ = 90° |
| 2023-02-17 | 01:48 | Saturn | Conjunction | Sun | Δλ = 0° |
| 2023-03-16 | 08:39 | Neptune | Conjunction | Sun | Δλ = 0° |
| 2023-03-17 | 03:10 | Mars | Eastern Quadrature | Sun | Δλ = 90° |
| 2023-03-17 | 19:45 | Mercury | Superior Conjunction | Sun | Δλ = 0° |
| 2023-04-12 | 07h | Mercury | Greatest Elongation East | Sun | 19° 29' |
| 2023-04-12 | 07:07 | Jupiter | Conjunction | Sun | Δλ = 0° |
| 2023-04-22 | 01:01 | Mercury | Stationary | | |
| 2023-05-02 | 08:28 | Mercury | Inferior Conjunction | Sun | Δλ = 0° |
| 2023-05-10 | 04:56 | Uranus | Conjunction | Sun | Δλ = 0° |
| 2023-05-14 | 15:44 | Mercury | Stationary | | |
| 2023-05-28 | 19:46 | Saturn | Western Quadrature | Sun | Δλ = 270° |
| 2023-05-29 | 14h | Mercury | Greatest Elongation West | Sun | -24° 53' |
| 2023-06-04 | 20h | Venus | Greatest Elongation East | Sun | 45° 24' |
| 2023-06-19 | 00:13 | Saturn | Stationary | | |
| 2023-06-19 | 12:54 | Neptune | Western Quadrature | Sun | Δλ = 270° |
| 2023-07-01 | 14:06 | Mercury | Superior Conjunction | Sun | Δλ = 0° |
| 2023-07-01 | 22:25 | Neptune | Stationary | | |
| 2023-07-21 | 08:29 | Venus | Stationary | | |
| 2023-08-07 | 09:03 | Jupiter | Western Quadrature | Sun | Δλ = 270° |
| 2023-08-10 | 11h | Mercury | Greatest Elongation East | Sun | 27° 24' |
| 2023-08-13 | 20:16 | Venus | Inferior Conjunction | Sun | Δλ = 0° |
| 2023-08-16 | 11:35 | Uranus | Western Quadrature | Sun | Δλ = 270° |
| 2023-08-23 | 13:48 | Mercury | Stationary | | |
| 2023-08-27 | 17:28 | Saturn | Opposition | Sun | Δλ = 180° |
| 2023-08-29 | 12:27 | Uranus | Stationary | | |
| 2023-09-03 | 12:34 | Venus | Stationary | | |
| 2023-09-05 | 06:02 | Jupiter | Stationary | | |
| 2023-09-06 | 20:09 | Mercury | Inferior Conjunction | Sun | Δλ = 0° |
| 2023-09-15 | 09:21 | Mercury | Stationary | | |
| 2023-09-19 | 20:18 | Neptune | Opposition | Sun | Δλ = 180° |
| 2023-09-22 | 22h | Mercury | Greatest Elongation West | Sun | -17° 52' |
| 2023-10-20 | 14:38 | Mercury | Superior Conjunction | Sun | Δλ = 0° |
| 2023-10-24 | 08h | Venus | Greatest Elongation West | Sun | -46° 25' |
| 2023-11-03 | 14:02 | Jupiter | Opposition | Sun | Δλ = 180° |
| 2023-11-05 | 02:00 | Saturn | Stationary | | |
| 2023-11-14 | 02:21 | Uranus | Opposition | Sun | Δλ = 180° |
| 2023-11-18 | 14:43 | Mars | Conjunction | Sun | Δλ = 0° |
| 2023-11-23 | 18:47 | Saturn | Eastern Quadrature | Sun | Δλ = 90° |
| 2023-12-04 | 23h | Mercury | Greatest Elongation East | Sun | 21° 16' |
| 2023-12-07 | 08:54 | Neptune | Stationary | | |
| 2023-12-13 | 13:55 | Mercury | Stationary | | |
| 2023-12-17 | 12:43 | Neptune | Eastern Quadrature | Sun | Δλ = 90° |
| 2023-12-23 | 03:54 | Mercury | Inferior Conjunction | Sun | Δλ = 0° |