V429 Geminorum
Star in the constellation Gemini / From Wikipedia, the free encyclopedia
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V429 Geminorum (BD+20°1790) is a young orange dwarf star in the constellation Gemini, located 90 light years away from the Sun. It is a BY Draconis variable, a cool dwarf which varies rapidly in brightness as it rotates.
Quick Facts Observation data Epoch J2000.0 Equinox J2000.0, Constellation ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Gemini |
Right ascension | 07h 23m 43.58935s[2] |
Declination | +20° 24′ 58.6506″[2] |
Apparent magnitude (V) | 9.86 - 10.080[3] |
Characteristics | |
Spectral type | K5Ve[4] |
Variable type | BY Dra[3] |
Astrometry | |
Radial velocity (Rv) | 7.56±0.28[2] km/s |
Proper motion (μ) | RA: −65.642 mas/yr[2] Dec.: −230.692 mas/yr[2] |
Parallax (π) | 36.0856 ± 0.0186 mas[2] |
Distance | 90.38 ± 0.05 ly (27.71 ± 0.01 pc) |
Details | |
Mass | 0.63[5] M☉ |
Radius | 0.71[5] R☉ |
Luminosity | 0.17[5] L☉ |
Surface gravity (log g) | 4.53[5] cgs |
Temperature | 4410[5] K |
Metallicity | 0.30[5] |
Rotation | 2.76±0.04 d[6] |
Rotational velocity (v sin i) | 10.03[5] km/s |
Age | 35-80[5][7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
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