| Discovery | |
|---|---|
| Discovered by | Udry et al. |
| Discovery date | February 1, 1999 |
| Detection method | Radial velocity |
| Orbital characteristics | |
| Semi-major axis | 0.0482 ± 0.0028 AU |
| Eccentricity | 0.034 ± 0.029 |
| Orbital period (sidereal) | 3.509267 ± 0.000064 d |
| Longitude of perihelion | 141° |
| Time of perihelion | 2,450,830.34 ± 0.48 JD |
| Semi-amplitude | 54.9 ± 1.8 m/s |
| Physical characteristics | |
| Mass | >0.467 ± 0.041 MJ |
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. 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.
This planet was discovered by the Geneva Extrasolar Planet Search team using Doppler spectroscopy.
See also
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. S2CID 119067572.
- 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 2012-02-04. Retrieved 2008-06-08.
External links
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