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✨ NGC 2355

Object data

NGC 2355 — sky survey preview (NASA SkyView)
🔭 NASA SkyView sky survey preview
TypeOpen cluster
ConstellationGemini
Right ascension7h16m59.2s (109.2465°)
Declination+13°45'00" (+13.7499°)
Magnitudemag 9.7
Apparent size6′
Other designationsNGC 2356

An open cluster in Gemini.

Midnight transit date (best season to observe and image)

Location: Tokyo (change)

🗓️
Around Jan 5, 2026

The date it transits around midnight (transit altitude about 68°)

This date has already passed this year. Next year (2027) it will be around Jan 5.

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

🔭
Oct 12 0:12 – 4:19

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.

0° 15° 30° 60° 90° E NE SE N S 17:11 20:17 23:23 2:29 5:35
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

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