Cluster

M40

M40

Captures

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Object data

Designation: M40
Type: Cluster
Constellation: Ursa Major
RA (J2000): 12h 22m 16s
Dec (J2000): +58° 05′ 04″
Magnitude: 8.0
Catalogue: Messier
Reference: Wikipedia

Catalogue values from OpenNGC (CC-BY-SA-4.0).

Best months to observe

From 51.5°N: best April to May, peaking at 81° at 22:00. Circumpolar - never sets.

January: 38 degrees at 22:00
February: 51 degrees at 22:00
March: 66 degrees at 22:00
April: 81 degrees at 22:00
May: 77 degrees at 22:00
June: 62 degrees at 22:00
July: 47 degrees at 22:00
August: 34 degrees at 22:00
September: 24 degrees at 22:00
October: 20 degrees at 22:00
November: 21 degrees at 22:00
December: 27 degrees at 22:00

Your latitude

Degrees north, negative for south. Recomputed in your browser and remembered on this device.

Altitude at 22:00 local time on the 15th of each month. Twilight, moon and weather are your problem.