Deep space
Great Pegasus Cluster
Globular cluster · M15 · NGC 7078
Globular cluster in Pegasus
Photo: en:NASA, en:STScI, en:WikiSky · Public domain · Wikimedia Commons
Messier 15 or M15 is a globular cluster in the constellation Pegasus. It was discovered by Jean-Dominique Maraldi in 1746 and included in Charles Messier's catalogue of comet-like objects in 1764. At an estimated 12.5±1.3 billion years old, it is one of the oldest known globular clusters.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
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Key facts
Distance
~33,000 light-years
Apparent mag.
+6.2
Apparent size
18′
Best seen with
Naked eye (dark sky)
Catalogue
M15 · NGC 7078
Did you know
- Listed as Messier 15 in the Messier catalogue, also known as NGC 7078.
- Found in the constellation Pegasus.
- Visible to the naked eye from a dark, moonless site.
