🌌 IC 2587
Object data
| Type | Galaxy |
|---|---|
| Constellation | Antlia |
| Right ascension | 10h30m59.8s (157.7490°) |
| Declination | -34°33'46" (-34.5629°) |
| Magnitude | mag 12.35 |
| Apparent size | 1.98′ × 1.47′ |
| Other designations | IC 2587 |
A galaxy in Antlia.
Midnight transit date (best season to observe and image)
Location: Tokyo (change)
Around Feb 23, 2026
The date it transits around midnight (transit altitude about 20°)
This date has already passed this year. Next year (2027) it will be around Feb 24.
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 16 evening – Oct 17 dawn) · Location: Tokyo (full darkness = end of astronomical dusk to start of dawn, altitude ≥ 15°)
Moon tonight: Waxing crescent (age 4.7 days, 23% illuminated)
It does not reach 15° during full darkness tonight (it is high only in daytime or twilight at this time of year).
Night (sunset – sunrise)
Full darkness (dusk – dawn)
Moon up (darker = brighter moon)
Best time to observe (thick line)
Now
Sunset 17:05 → Dusk 18:29 → Dawn 4:23 → Sunrise 5:48