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|Observation data (J2000.0 epoch)|
|Right ascension||07h 44.6m|
|Distance||3.6 kly (1.1 kpc)|
|Apparent magnitude (V)||6.0|
|Apparent dimensions (V)||22.0′|
|Estimated age||100 million years|
|Other designations||NGC 2447|
Some observers mention the cluster as having the shape of a starfish. With a fair-sized telescope, this is its appearance on a dull night, but [a four-inch refractor] shows it as a typical star-studded galactic cluster.
- Caroline Herschel – first observer of M93 and sister of Sir William Herschel
- Messier 93 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- Open Cluster M93 @ SEDS Messier pages
- Gray, Meghan; Zarnecki, John. "M93 – Open Cluster". Deep Space Videos. Brady Haran.