HD 179079

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
Distance210 ± 10 ly
(66 ± 3 pc)
Absolute magnitude (MV)3.9[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

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]

The HD 179079 planetary system[3]
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. 1.0 1.1 1.2 1.3 1.4 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
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 HIP 94256 -- Star, database entry, SIMBAD. Accessed on line September 2, 2009.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Star : HD 179079, entry, Extrasolar Planets Encyclopaedia. Accessed on line September 2, 2009.
  4. From apparent magnitude and parallax.
  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.

Coordinates: 19h 11m 09.8291s, −02° 38′ 18.185″