NGC 121
| NGC 121 | |
|---|---|
|
Hubble Space Telescope image of globular cluster NGC 121 | |
| Observation data (J2000 epoch) | |
| Constellation | Tucana |
| Right ascension | 00h 26m 48.25s [1] |
| Declination | −71° 32′ 8.4″ [1] |
| Distance | 199.0 Kly (61 Kpc [1]) |
| Apparent magnitude (V) | 11.24 [2] |
| Physical characteristics | |
| Radius | 175 light years [3] (53.7 parsecs) |
| Estimated age | 10 billion years [3] |
NGC 121 is a globular cluster in the Small Magellanic Cloud, in the constellation of Tucana. It was first discovered by John Herschel on September 20, 1835. The compiler of the New General Catalogue, John Louis Emil Dreyer, described this object as "pretty bright, pretty small, little extended, very gradually brighter middle".[3]
References
- 1 2 3 "NASA/IPAC Extragalactic Database". Results for NGC 121. Retrieved 2015-09-29.
- ↑ "Simbad Astronomical Database". NGC 121 - Globular Cluster. Retrieved 2015-09-29.
- 1 2 3 "New General Catalogue Objects: NGC 100-149". Retrieved 2015-09-29.
This article is issued from Wikipedia - version of the Sunday, April 03, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.