IC 1731 — midnight transit date and best time to observe

Object data

A galaxy in Triangulum.

Location: Tokyo (change)

🗓️

Around Oct 15, 2026

The date it transits around midnight (transit altitude about 82°)

This date has already passed this year. Next year (2027) it will be around Oct 15.

For about 2–3 weeks either side of this date, the object stays high from evening to dawn — its observing season.

Tonight (Oct 15 evening – Oct 16 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)

🔭

Oct 15 18:31 – Oct 16 4:23

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.

Night (sunset – sunrise) Full darkness (dusk – dawn) Moon up (darker = brighter moon) Best time to observe (thick line) Now

Sunset 17:06 → Dusk 18:31 → Dawn 4:23 → Sunrise 5:47

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