HD 171028 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 171028 | |
| Constellation | Ophiuchus | |
| Right ascension | (α) | 18h 32m 15.4929s |
| Declination | (δ) | +06° 56′ 44.714″ |
| Distance | 293.5±25.4 ly (90±7.8 pc) | |
| Spectral type | G0V | |
| Orbital elements | ||
| Semi-major axis | (a) | 1.29 AU |
| Periastron | (q) | 0.50 AU |
| Apastron | (Q) | 2.08 AU |
| Eccentricity | (e) | 0.61 |
| Orbital period | (P) | 538±2 d (1.47 y) |
| Orbital speed | (υ) | 26.2 km/s |
| Argument of periastron |
(ω) | 305±1° |
| Time of periastron | (T0) | 2453648.92±1.89 JD |
| Semi-amplitude | (K) | ? m/s |
| Physical characteristics | ||
| Mass | (m) | >1.83 MJ |
| Discovery information | ||
| Discovery date | July 13, 2007 | |
| Discoverer(s) | Santos et al. | |
| Discovery method | Doppler spectroscopy | |
| Discovery status | Unpublished | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
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.
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.
Coordinates: 
18h 32m 15.4929s, +06° 56′ 44.714″
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