HD 190647
HD 190647 is a yellow subgiant star located approximately 178 light years away in the constellation of Sagittarius. The apparent magnitude is 8 and absolute magnitude is 4. It is also called HIP 99115. In 2007, a planet was found to be orbiting the star.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.9 ± 0.06 MJ | 2.07 ± 0.06 | 1038.1 ± 4.9 | 0.18 ± 0.02 | — | — |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 20h 07m 19.6698s[1] |
| Declination | −35° 32′ 19.0786″[1] |
| Apparent magnitude (V) | 7.78 |
| Characteristics | |
| Spectral type | G5IV |
| Astrometry | |
| Proper motion (μ) | RA: −26.622±0.079[1] mas/yr Dec.: −206.859±0.053[1] mas/yr |
| Parallax (π) | 18.3287 ± 0.0495[1] mas |
| Distance | 177.9 ± 0.5 ly (54.6 ± 0.1 pc) |
| Absolute magnitude (MV) | 4.20 |
| Other designations | |
| Database references | |
| SIMBAD | data |
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 190647". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-11.
- Naef, M.; et al. (2007). "The HARPS search for southern extra-solar planets. IX. Exoplanets orbiting HD 100777, HD 190647, and HD 221287". Astronomy and Astrophysics. 470 (2): 721–726. arXiv:0704.0917. Bibcode:2007A&A...470..721N. doi:10.1051/0004-6361:20077361.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.