HD 179079

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]

HD 179079
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aquila
Right ascension 19h 11m 09.8287s[1]
Declination −02° 38′ 18.1871″[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: −134.422±0.125[1] mas/yr
Dec.: −89.424±0.104[1] mas/yr
Parallax (π)14.3167 ± 0.0809[1] mas
Distance228 ± 1 ly
(69.8 ± 0.4 pc)
Absolute magnitude (MV)3.87[4]
Details
Mass1.087 ± 0.1[3] M☉
Radius1.48[3] R☉
Metallicity [Fe/H]0.29 ± 0.04[3] dex
Other designations
BD−02 4881, HIP 94256, PPM 202620, SAO 143111.[2]
Database references
SIMBADdata
Exoplanet Archivedata
Extrasolar Planets
Encyclopaedia		data

Planetary system

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]

The HD 179079 planetary system[6][7]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥0.076±0.012 MJ 0.1214+0.0064
−0.0071		 14.4808+0.01
−0.0035		 0.049±0.087 — —

See also

References
  1. 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.
  2. HIP 94256 -- Star, database entry, SIMBAD. Accessed on line September 2, 2009.
  3. Star : HD 179079, entry, Extrasolar Planets Encyclopaedia. Accessed on line September 2, 2009.
  4. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
  5. 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. S2CID 16707072.
  6. Ment, Kristo; et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5). 213. arXiv:1809.01228. Bibcode:2018AJ....156..213M. doi:10.3847/1538-3881/aae1f5. S2CID 119243619.
  7. Hill, Michelle L.; Mocnik, Teo; Kane, Stephen R.; Henry, Gregory W.; Pepper, Joshua; Hinkel, Natalie R.; Dalba, Paul A.; Fulton, Benjamin J.; Stassun, Keivan G.; Rosenthal, Lee J.; Howard, Andrew W.; Howell, Steve B.; Everett, Mark E.; Boyajian, Tabetha S.; Fischer, Debra A.; Rodriguez, Joseph E.; Beatty, Thomas G.; James, David J. (2020). "Orbital Refinement and Stellar Properties for the HD 9446, HD 43691, and HD 179079 Planetary Systems". The Astronomical Journal. 159 (5): 197. arXiv:2003.02385. doi:10.3847/1538-3881/ab7d33. S2CID 212414679.


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