HD 171028 b
HD 171028 b is a >1.83 MJ exoplanet orbiting very eccentrically around HD 171028. The period is 1.47 years and semi-major axis of 1.29 AU. The Geneva Extrasolar Planet Search team announced the discovery of planet on July 13, 2007.
| Discovery | |
|---|---|
| Discovered by | Santos et al. |
| Discovery date | July 13, 2007 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| Apastron | 2.08 AU (311,000,000 km) |
| Periastron | 0.50 AU (75,000,000 km) |
| 1.29 AU (193,000,000 km) | |
| Eccentricity | 0.61 |
| 538±2 d 1.47 y | |
Average orbital speed | 26.2 |
| 2453648.92±1.89 | |
| 305±1 | |
| Semi-amplitude | ? |
| Star | HD 171028 |
| Physical characteristics | |
| Mass | >1.83 MJ |
References
- Santos; Mayor, M.; Bouchy, F.; Pepe, F.; Queloz, D.; Udry, S. (2007). "The HARPS search for southern extra-solar planets XII. A giant planet orbiting the metal-poor star HD 171028" (abstract). Astronomy and Astrophysics. 474 (2): 647–651. arXiv:0708.0954. Bibcode:2007A&A...474..647S. doi:10.1051/0004-6361:20078129. web preprint
External links
- "HD 171028". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-25.
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