✨ C73
Object data
| Type | Globular cluster |
|---|---|
| Constellation | Columba |
| Right ascension | 5h14m06.0s (78.5250°) |
| Declination | -40°03'00" (-40.0500°) |
| Magnitude | mag 7.3 |
| Apparent size | 11′ |
| Other designations | NGC 1851 |
A globular cluster in Columba.
Midnight transit date (best season to observe and image)
Location: Tokyo (change)
Around Dec 5, 2026
The date it transits around midnight (transit altitude about 14°)
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
It never reaches 15° at this location (maximum altitude at transit: about 14°).
Night (sunset – sunrise)
Full darkness (dusk – dawn)
Moon up (darker = brighter moon)
Best time to observe (thick line)
Now
Sunset 17:11 → Dusk 18:36 → Dawn 4:19 → Sunrise 5:44