GJ 1252
Red dwarf star in the constellation Telescopium / From Wikipedia, the free encyclopedia
GJ 1252 is a red dwarf star located 66.5 light-years (20.4 parsecs) away from the Solar System in the constellation of Telescopium. The star has about 38% the mass and 39% the radius of the Sun, and a temperature of about 3,458 K (3,185 °C; 5,765 °F). GJ 1252 is orbited by one known exoplanet.[3]
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Telescopium[1] |
Right ascension | 20h 27m 42.08140s[2] |
Declination | −56° 27′ 25.1519″[2] |
Apparent magnitude (V) | 12.193[3] |
Characteristics | |
Evolutionary stage | Main sequence |
Spectral type | M2.5V[4] |
Apparent magnitude (B) | 13.655±0.029[3] |
Apparent magnitude (V) | 12.193±0.056[3] |
Apparent magnitude (G) | 11.235±0.003[2] |
Apparent magnitude (J) | 8.697±0.019[3] |
Apparent magnitude (H) | 8.161±0.034[3] |
Apparent magnitude (K) | 7.915±0.023[3] |
Astrometry | |
Radial velocity (Rv) | 7.38±0.29[2] km/s |
Proper motion (μ) | RA: 424.417 mas/yr[2] Dec.: −1,230.941 mas/yr[2] |
Parallax (π) | 49.0555 ± 0.0247 mas[2] |
Distance | 66.49 ± 0.03 ly (20.39 ± 0.01 pc) |
Details[3] | |
Mass | 0.381±0.019 M☉ |
Radius | 0.391±0.020 R☉ |
Luminosity (bolometric) | 0.0196+0.0026 −0.0023 L☉ |
Surface gravity (log g) | 4.49[2] cgs |
Temperature | 3,458+140 −133 K |
Metallicity [Fe/H] | 0.1±0.1 dex |
Age | 3.9±0.4[5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
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