Open star cluster · CassiopeiaM103 · NGC 581
Messier 103
Above the horizon all nightHighest after dark 01:33 · north · 81°
Join the waitlistSkyMate is coming to iPhone
Where is Messier 103?
Times for LondonChange city
Look north, about 81° up at 01:33 in Cassiopeia.
- Rises
- Always up
- Highest
- 01:36
- Sets
- Never
- Best after dark
- 01:33 · 81°
Can I see Messier 103 tonight?
From London tonight, Messier 103 is above the horizon all night. It’s highest after dark at 01:33, in the north at 81°.
At magnitude 7.4, with its light spread out, it needs binoculars and a dark sky.
This is position and timing only: clouds, haze and light pollution aren’t included.
What does Messier 103 look like?
Eyes
Not visibleToo faint to see by eye.
Binoculars
A scatter of stars; often the best view.
Telescope
Many separate stars. Use your lowest magnification.
About Messier 103
Messier 103 (M103) is a open star cluster in Cassiopeia, with a total brightness of magnitude 7.4 and an apparent size of 4.5′.
Nearby in the sky
Sources: OpenNGC (CC BY-SA 4.0); star chart: Wikidata (CC0). Positions computed for your place and time with astronomy-engine. Data & Licences