HD 149382: Difference between revisions
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[[Category:Ophiuchus constellation]] |
[[Category:Ophiuchus constellation]] |
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[[Category:Henry Draper Catalogue objects|149382]] |
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{{main-star-stub}} |
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[[Category:Planetary systems]] |
[[Category:Planetary systems]] |
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Revision as of 18:07, 13 March 2010
 Brown dwarf HD 149382 b. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ophiuchus |
| Right ascension | 16h 34m 23.3338s |
| Declination | –04° 00′ 52.015″ |
| Apparent magnitude (V) | 8.9 |
| Characteristics | |
| Spectral type | B5VI |
| Astrometry | |
| Distance | 241.2 ly (74±8 pc) |
| Details | |
| Mass | 0.47 M☉ |
| Radius | 0.24 R☉ |
| Luminosity | 82 L☉ |
| Temperature | 35,500 K |
| Other designations | |
ALS 9317, HD 149382, HIP 81145, SAO 141250 | |
| Database references | |
| SIMBAD | data |
HD 149382 is a B-type subdwarf star approximately 242 light-years away from Sun in the constellation of Ophiuchus. In 2009, a substellar companion (even a superjovian planet) was announced orbiting the star.[1]. This star has nearly half the mass of SOL, and is 241 light years away from earth.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >8-23 MJ | 0.02343 | 2.391 | 0 | 39±13° | — |
See also
References
- ^ Geier; et al. (2009). "Discovery of a close substellar companion to the hot subdwarf star HD 149382 - The decisive influence of substellar objects on late stellar evolution". The Astrophysical Journal Letters. 702 (1): 96–99. Bibcode:2009ApJ...702L..96G.
{{cite journal}}: Explicit use of et al. in:|author=(help)
External links
- http://exoplanet.eu/planet.php?p1=HD%20149382&p2=b
- http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD%20149382b
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