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HIP 107773
Giant star in the constellation Indus with one exoplanet / From Wikipedia, the free encyclopedia
HIP 107773 is a star located 344 light years from Earth in the southern constellation Indus.[2][note 1] It is classified as a horizontal branch K-type giant star,[2][3] having a spectral type K0III[1] and a radius of 11.6 R☉.[5] With an apparent magnitude of 5.6, the star can be faintly seen with the naked eye.[1] It has an exoplanet, HIP 107773 b, a gas giant orbiting it at a distance of 0.72 astronomical units (108,000,000 km),[6] about the same distance from Venus to the Sun.[lower-alpha 1]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Indus[note 1] |
Right ascension | 21h 50m 0.12s[1] |
Declination | −64° 42′ 45.1″[1] |
Apparent magnitude (V) | 5.6[1] |
Characteristics | |
Evolutionary stage | Horizontal branch[2][3] |
Spectral type | K0III[1] |
B−V color index | 0.99[4] |
Astrometry | |
Radial velocity (Rv) | −0.1701±0.1237[5] km/s |
Proper motion (μ) | RA: −0.7032±0.0807 mas/yr[5] Dec.: −37.4432±0.0893 mas/yr[5] |
Parallax (π) | 9.5919 mas[1] |
Distance | 343.9±2.6 ly (105.5±0.8 pc)[2] |
Absolute magnitude (MV) | 0.54[4] |
Details[3] | |
Mass | 2.42±0.27 M☉ |
Radius | 11.6±1.4 R☉ |
Luminosity | 74.13+1.12 −1.15 L☉ |
Surface gravity (log g) | 2.6±0.2 cgs |
Temperature | 4945±100 K |
Age | >1[2] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
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