Wikipedia:
Gliese 229
| Observation data Epoch 2000 |
|
|---|---|
| Constellation | Lepus |
| Right ascension | 06h 10m 35s |
| Declination | -21° 51' 42" |
| Apparent magnitude (V) | 8.18 |
| Distance | 19 ly (6.3 pc) |
| Spectral type | M1V |
| Other designations | |
Gliese 229 (also written as Gl 229 or GJ 229) is a cool, red dwarf star about 19 light years away in the constellation Lepus. The star is known to be a flare star. In 1994 a substellar companion was imaged and in 1995 it was confirmed. Gliese 229B is a brown dwarf orbiting the star; although it is too small to sustain nuclear fusion, with a mass of 20 to 50 times that of Jupiter it is still too massive to be a planet.
External links
- Astronomers Announce First Clear Evidence of a Brown Dwarf – STScI news release STScI-1995-48 (November 29, 1995)
- Brown dwarfs (NASA)
- Extrasolar Visions – Gliese 229
- Extrasolar Visions – Gliese 229 b
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
