TOI-270
Star in the constellation Pictor / From Wikipedia, the free encyclopedia
TOI-270, also known as L 231-32, is a red dwarf star 73.3 light-years (22.5 parsecs) away in the constellation Pictor. It has about 39% the mass and 38% the radius of the Sun, and a temperature of about 3,506 K (3,233 °C; 5,851 °F). TOI-270 hosts a system of three known exoplanets.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Pictor[1] |
Right ascension | 04h 33m 39.72001s[2] |
Declination | −51° 57′ 22.4354″[2] |
Apparent magnitude (V) | 12.617[3] |
Characteristics | |
Evolutionary stage | Main sequence |
Spectral type | M3.0V[4] |
Apparent magnitude (V) | 12.617±0.03[3] |
Apparent magnitude (R) | 12.147±0.05[3] |
Apparent magnitude (G) | 11.621±0.003[2] |
Apparent magnitude (J) | 9.099±0.032[3] |
Apparent magnitude (H) | 8.531±0.073[3] |
Apparent magnitude (K) | 8.251±0.029[3] |
Astrometry | |
Radial velocity (Rv) | 25.90±0.37[2] km/s |
Proper motion (μ) | RA: +83.082 mas/yr[2] Dec.: −269.803 mas/yr[2] |
Parallax (π) | 44.4899 ± 0.0147 mas[2] |
Distance | 73.31 ± 0.02 ly (22.477 ± 0.007 pc) |
Details[5] | |
Mass | 0.386±0.008 M☉ |
Radius | 0.378±0.011 R☉ |
Luminosity (bolometric) | 0.0194±0.0019 L☉ |
Surface gravity (log g) | 4.872±0.026 cgs |
Temperature | 3506±70 K |
Metallicity [Fe/H] | −0.20±0.12 dex |
Other designations | |
Database references | |
SIMBAD | data |
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