Gliese 208: Difference between revisions
Content deleted Content added
START PAGE on a star that passed as close as 1.537 parsecs (5.0 light-years) from the Sun about 500 thousand years ago. |
(No difference)
|
Revision as of 05:04, 19 March 2010
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 36m 30.991s[1] |
| Declination | +11° 19′ 40.32″ |
| Apparent magnitude (V) | 8.9[1] (binoculars) |
| Characteristics | |
| Spectral type | K7[1][2] |
| Astrometry | |
| Radial velocity (Rv) | 21.9[3]—22.7[1] km/s |
| Parallax (π) | 87.9[1] mas |
| Distance | ~37.1 ly (11.377 pc) |
| Details | |
| Mass | 0.47[2] M☉ |
| Temperature | 3750[3] K |
| Other designations | |
Gliese 208, BD+11 878, GJ 208, HIP 26335, HD 245409, TYC 709-63-1, SAO 94695[1] | |
Gliese 208 is an orange dwarf star (K7 spectral class) with an apparent magnitude of 8.9.[1] It is about 0.47 solar masses.[2]
Bobylev's calculations from 2010 suggest that this star passed as close as 1.537 parsecs (5.0 light-years) from the Sun about 500 thousand years ago.[2]
References
- ^ a b c d e f g "Gliese 208". SIMBAD Astronomical Database. Retrieved 2010-03-19.
- ^ a b c d Bobylev, Vadim V. (2010). "Searching for Stars Closely Encountering with the Solar System". Astronomy Letters. 36 (3): 220–226. doi:10.1134/S1063773710030060.
{{cite journal}}: Unknown parameter|month=ignored (help) - ^ a b García-Sánchez, Joan (1999). "Stellar Encounters with the Oort Cloud Based on HIPPARCOS Data". The Astronomical Journal. 117 (2): 1042–1055. Bibcode:1999AJ....117.1042G. doi:10.1086/300723.
{{cite journal}}: Unknown parameter|coauthors=ignored (|author=suggested) (help); Unknown parameter|month=ignored (help)
External links
- Wikisky image of HD 245409 (Gliese 208)