HD 179079
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 11m 09.8291s[1] |
| Declination | −02° 38′ 18.185″[1] |
| Apparent magnitude (V) | 7.96[2] |
| Characteristics | |
| Spectral type | G5IV[3] |
| Apparent magnitude (B) | 8.66[2] |
| Apparent magnitude (J) | 6.734[2] |
| Apparent magnitude (H) | 6.402[2] |
| Apparent magnitude (K) | 6.311[2] |
| B−V color index | 0.70[2] |
| Astrometry | |
| Proper motion (μ) | RA: −133.89 ± 0.80[1] mas/yr Dec.: −90.10 ± 0.58[1] mas/yr |
| Parallax (π) | 15.26 ± 0.77[1] mas |
| Distance | 210 ± 10 ly (66 ± 3 pc) |
| Absolute magnitude (MV) | 3.9[4] |
| Details | |
| Mass | 1.087 ± 0.1[3] M☉ |
| Radius | 1.48[3] R☉ |
| Metallicity [Fe/H] | 0.29 ± 0.04[3] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 179079 is a G-type subgiant star in the constellation of Aquila.[3] It has an apparent visual magnitude of approximately 7.96.[2] It is larger than our Sun as it has a radius of approximately 1.48 solar radii.[3] An exoplanet, HD 179079 b, was announced in August 2009 to be orbiting this star. The planet was detected by the radial velocity method, using the HIRES spectrometer at Keck Observatory.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.08 MJ | 0.11 | 14.476 ± 0.011 | 0.115 ± 0.087 | — | — |
See also
References
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- 1 2 3 4 5 6 7 8 HIP 94256 -- Star, database entry, SIMBAD. Accessed on line September 2, 2009.
- 1 2 3 4 5 6 7 Star : HD 179079, entry, Extrasolar Planets Encyclopaedia. Accessed on line September 2, 2009.
- ↑ From apparent magnitude and parallax.
- ↑ Valenti, Jeff A.; et al. (2009). "Two Exoplanets Discovered at Keck Observatory". The Astrophysical Journal 702 (2): 989–997. arXiv:0908.1612. Bibcode:2009ApJ...702..989V. doi:10.1088/0004-637X/702/2/989.
Coordinates: 
19h 11m 09.8291s, −02° 38′ 18.185″
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