HD 8673

HD 8673
HD 8673
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Andromeda
Right ascension 01h 26m 08.7849s
Declination +34° 34′ 46.921″
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: 235.58 ± 0.66 mas/yr
Dec.: -84.99 ± 0.42 mas/yr
Parallax (π) 26.14 ± 0.79 mas
Distance 125 ± 4 ly
(38 ± 1 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, GC 1726, HD 8673, HIP 6702, HR 410, IRAS 01232+3418 PPM 66283, SAO 54695, TYC 2300-1642-1
Database references
SIMBAD data

HD 8673 is an F-type main sequence star approximately 125 light-years away in the constellation of Andromeda. It has an apparent magnitude and absolute magnitude of 6.31 and 3.40 respectively. In its orbit, there is debate about the celestial object as to whether be an exoplanet or a brown dwarf.

Possible planetary system

An unconfirmed celestial object is thought to be orbiting around HD 8673. The possible mass ranges from 10 to 18 Jupiter mass. This 639-day object orbits at 236 Gm (1.58 AU) away from its parent star HD 8673.

This planet or brown dwarf was discovered in Texas in 2005 by Hatzes, who was the discoverer of Epsilon Eridani b.

The HD 8673 system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity
b (unconfirmed) >14 ± 4 MJ 1.58 639  ?

References

External links


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