💫 Abell 18
Object data
| Type | Planetary nebula |
|---|---|
| Constellation | Monoceros |
| Right ascension | 6h56m14.3s (104.0595°) |
| Declination | -2°53'08" (-2.8856°) |
| Magnitude | (no magnitude data) |
| Apparent size | 1.22′ |
| Other designations | Abell 18 |
A planetary nebula in Monoceros (Abell catalog of planetary nebulae).
Midnight transit date (best season to observe and image)
Location: Tokyo (change)
The date it transits around midnight (transit altitude about 51°)
For about 2–3 weeks either side of this date, the object stays high from evening to dawn — its observing season.
Best time to observe tonight
Tonight (Oct 11 evening – Oct 12 dawn) · Location: Tokyo (full darkness = end of astronomical dusk to start of dawn, altitude ≥ 15°)
Moon tonight: New moon (age 29.2 days, 0% illuminated) — Little moonlight — a good time for faint objects
Hours of full darkness (end of astronomical dusk to start of dawn) when it is above 15° — the darkest sky, mostly clear of buildings and trees.
Sunset 17:11 → Dusk 18:36 → Dawn 4:19 → Sunrise 5:44