HD 16760
Binary star system in the constellation Perseus / From Wikipedia, the free encyclopedia
HD 16760 is a binary star system approximately 227 light-years away in the constellation Perseus. The primary star HD 16760 (HIP 12638) is a G-type main sequence star similar to the Sun. The secondary, HIP 12635 is 1.521 magnitudes fainter and located at a separation of 14.6 arcseconds from the primary, corresponding to a physical separation of at least 660 AU. Announced in July 2009, HD 16760 has been confirmed to have a red dwarf orbiting it, formerly thought to be a brown dwarf or exoplanet.[2][6][4]
Quick Facts Observation data Epoch J2000.0 Equinox J2000.0, Constellation ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
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Constellation | Perseus |
Right ascension | 02h 42m 21.3071s[1] |
Declination | +38° 37′ 07.1392″[1] |
Apparent magnitude (V) | 8.74[citation needed] |
Characteristics | |
Spectral type | G5V[2] |
B−V color index | 0.715[2] |
Astrometry | |
Proper motion (μ) | RA: 78.493±0.760[1] mas/yr Dec.: −100.691±0.717[1] mas/yr |
Parallax (π) | 14.3851 ± 0.4554 mas[1] |
Distance | 227 ± 7 ly (70 ± 2 pc) |
Absolute magnitude (MV) | 5.41[2] |
Orbit[3] | |
Companion | HD 16760 b |
Period (P) | 466.048±0.057 d |
Semi-major axis (a) | 1.161±0.097 AU |
Eccentricity (e) | 0.0812±0.0018 |
Inclination (i) | 3.164+0.810 −0.762[4]° |
Periastron epoch (T) | 24513802.6±1.9 |
Argument of periastron (ω) (secondary) | 241.9±1.4° |
Semi-amplitude (K1) (primary) | 407.16±0.71 km/s |
Details | |
HD 16760 A | |
Mass | 0.78 ± 0.05[2] M☉ |
Radius | 0.81 ± 0.27[2] R☉ |
Luminosity (bolometric) | 0.72 ± 0.43[2] L☉ |
Surface gravity (log g) | 4.47 ± 0.06[2] cgs |
Temperature | 5629 ± 44[2] K |
Metallicity [Fe/H] | +0.067 ± 0.05[2] dex |
Rotational velocity (v sin i) | 0.5 ± 0.5[2] km/s |
Age | 1.3 ± 0.9[5] Gyr |
HD 16760 b | |
Mass | 291.9+120.7 −69.4[4] MJup |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
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