HD 8673

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HD 8673
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Andromeda
Right ascension 01h 26m 08.786s[1]
Declination +34° 34′ 46.92″[1]
Apparent magnitude (V) 6.31
Characteristics
Spectral type F7V
U−B color index 0.01
B−V color index 0.47
Astrometry
Radial velocity (Rv) 16.9 ± 2 km/s
Proper motion (μ) RA: 237.19 ± 0.33[1] mas/yr
Dec.: -84.64 ± 0.25[1] mas/yr
Parallax (π) 27.73 ± 0.40[1] mas
Distance 118 ± 2 ly
(36.1 ± 0.5 pc)
Absolute magnitude (MV) 6.78
Details
Mass 1.3 M
Radius 1.07 R
Luminosity 4.588 L
Temperature 6000 – 7500 K
Rotation 0.004641 years
Age 1.95 × 109 years
Other designations
2MASS J01260875+3434471, BD+33°228, HD 8673, HIP 6702, HR 410, IRAS 01232+3418, PPM 66283, SAO 54695
Database references
SIMBAD data

HD 8673 is an F-type main sequence star approximately 118 light-years away[1] in the constellation of Andromeda. It has an apparent magnitude and absolute magnitude of 6.31 and 3.40 respectively. A sub-stellar companion was detected in 2005, it could either be a exoplanet or a brown dwarf.

Possible planetary system[edit]

An orbiting sub-stellar companion with a minimum mass 14 times that of Jupiter in a high-eccentricity orbit was discovered in 2005 and confirmed in 2010. This 1600 day object orbits at 3 AU away from its parent star.[2]

The HD 8673 system[2]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥14.2 ± 1.6 MJ 3.02 ± 0.15 1634 ± 17 0.723 ± 0.016

References[edit]

  1. ^ a b c d e f 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. ^ a b Hartmann, Michael et al. (2010). "A Sub-stellar Companion around the F7 V Star HD 8673". The Astrophysical Journal 717 (1): 348–356. Bibcode:2010ApJ...717..348H. doi:10.1088/0004-637X/717/1/348. 

External links[edit]