HD 102272 b
HD 102272 b is an extrasolar planet approximately 1,200 light-years away in the constellation of Leo. The planet was discovered orbiting the K-type giant star HD 102272 in 2008. The planet was discovered by the radial velocity method, using the Hobby-Eberly Telescope. Another planet, HD 102272 c, was also discovered orbiting the same star. The discovery was announced in June 2008. HD 102272 b orbits at an average of 0.614 astronomical units away from its star, with a mass at least 5.9 ± 0.2 times that of Jupiter.[1]
| Discovery | |
|---|---|
| Discovered by | Niedzielski et al. |
| Discovery site | McDonald Observatory, United States |
| Discovery date | 18 June 2008 |
| Radial velocity | |
| Orbital characteristics | |
| 0.614 ± 0.001 AU (91,850,000 ± 150,000 km)[1] | |
| Eccentricity | 0.05 ± 0.04[1] |
| 127.58 ± 0.30[1] d | |
| 2452146 ± 64[1] | |
| 118 ± 58[1] | |
| Semi-amplitude | 155.5 ± 5.6[1] |
| Star | HD 102272 |
| Physical characteristics | |
| Mass | >5.9 ± 0.2[1] MJ |
See also
References
- Niedzielski, A.; et al. (2009). "A Planet in a 0.6 AU Orbit Around the K0 Giant HD 102272". The Astrophysical Journal. 693 (1): 276–280. arXiv:0810.1710. Bibcode:2009ApJ...693..276N. doi:10.1088/0004-637X/693/1/276.
External links
- "Notes for planet HD 102272 b". The Extrasolar Planets Encyclopaedia. Retrieved 2008-07-01.
- "HD 102272 b". Exoplanets. Archived from the original on 2012-03-04. Retrieved 2008-11-09.
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