HD 171028
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 orbiting this star.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥1.98 MJ | 1.32 | 550±3 | 0.59±0.01 | — | — |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ophiuchus |
| Right ascension | 18h 32m 15.4933s[1] |
| Declination | 06° 56′ 44.6858″[1] |
| Apparent magnitude (V) | 8.31 |
| Characteristics | |
| Spectral type | G0V |
| Astrometry | |
| Proper motion (μ) | RA: −42.869±0.084[1] mas/yr Dec.: −14.705±0.077[1] mas/yr |
| Parallax (π) | 8.9274 ± 0.0497[1] mas |
| Distance | 365 ± 2 ly (112.0 ± 0.6 pc) |
| Details | |
| Other designations | |
| Database references | |
| SIMBAD | data |
See also
- List of extrasolar planets
References
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- "HD 171028". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-10-06.
- Santos, N. C.; et al. (2007). "The HARPS search for southern extra-solar planets. XII. A giant planet orbiting the metal-poor star HD 171028". Astronomy and Astrophysics. 474 (2): 647–651. arXiv:0708.0954. Bibcode:2007A&A...474..647S. doi:10.1051/0004-6361:20078129.
- Santos, N. C.; et al. (2011). "The HARPS search for southern extrasolar planets. XXV. Results from the metal-poor sample". Astronomy and Astrophysics. 526. A112. arXiv:1011.2094. Bibcode:2011A&A...526A.112S. doi:10.1051/0004-6361/201015494.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.