HD 171028
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ophiuchus |
| Right ascension | 18h 32m 15.4929s |
| Declination | +06° 56′ 44.714″ |
| Apparent magnitude (V) | +8.31 |
| Distance | 293.5±25.4 ly (90±7.8 pc) |
| Spectral type | G0V |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia | data |
HD 171028 is a yellow main-sequence star in the constellation of Ophiuchus. The apparent magnitude is +8.31, visible in good binoculars. Unlike most planet-harboring stars, it does not have a Hipparcos number, though the distance was estimated at 90±7.8 parsecs. In the summer of 2007, a planet was discovered.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.83 MJ | 1.29 | 538 ± 2 | 0.61 | — | — |
See also
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
Coordinates: 
18h 32m 15.4929s, +06° 56′ 44.714″
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