Palomar 4
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| Observation data: J2000 epoch | |
|---|---|
| Class: | |
| Constellation: | Sagittarius |
| Right ascension: | 11h 29m 16.8s[1] |
| Declination: | +28° 58′ 25″[1] |
| Distance: | 356 kly[citation needed] (109 kpc) |
| Apparent magnitude (V): | |
| Apparent dimensions (V): | |
| Physical characteristics | |
| Mass: | ( M☉) |
| Radius: | |
| VHB: | |
| Estimated age: | |
| Notable features: | |
| Other designations: | UGCA 237, GCl 17[1] |
| See also: Globular cluster, List of globular clusters | |
Palomar 4 is a globular cluster of the Milky Way galaxy. It was discovered in 1949 by Edwin Hubble and again in 1955 by A. G. Wilson. It is 356,000 light years away.
This star cluster is further away than the Magellanic Clouds and SagDEG satellite galaxies.
Initially it was thought to be a dwarf galaxy, and it was given the name Ursa Major Dwarf. However, it was later discovered to be a globular cluster.
[edit] See also
[edit] References
- ^ a b c SIMBAD Astronomical Database. Results for Palomar 4. Retrieved on November 17, 2006.
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