HD 75289 b
HD 75289 b is an extrasolar planet orbiting the star HD 75289 in Vela constellation. It has a minimum mass half that of Jupiter, and it orbits in a very short orbit completing one circular revolution around the star in three and a half days.[1] By studying the starlight scientists have concluded that the planet must have an albedo less than 0.12, rather low for a gas giant. Otherwise its reflected light would have been detected.
| Discovery | |
|---|---|
| Discovered by | Udry et al. |
| Discovery date | February 1, 1999 |
| Radial velocity | |
| Orbital characteristics | |
| 0.0482 ± 0.0028 AU | |
| Eccentricity | 0.034 ± 0.029 |
| 3.509267 ± 0.000064 d | |
| 141° | |
| 2,450,830.34 ± 0.48 JD | |
| Semi-amplitude | 54.9 ± 1.8 m/s |
| Physical characteristics | |
| Mass | >0.467 ± 0.041 MJ |
This planet was discovered by the Geneva Extrasolar Planet Search team using Doppler spectroscopy.[2]
References
- Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
- Udry, S.; et al. (2000). "The CORALIE survey for southern extra-solar planets II. The short-period planetary companions to HD 75289 and HD 130322". Astronomy and Astrophysics. 356 (2): 590–598. Bibcode:2000A&A...356..590U. Archived from the original on 2012-03-28. Retrieved 2008-06-08.
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