![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Artist%25E2%2580%2599s_impression_of_the_super-Earth_exoplanet_LHS_1140b.jpg/640px-Artist%25E2%2580%2599s_impression_of_the_super-Earth_exoplanet_LHS_1140b.jpg&w=640&q=50)
LHS 1140
Star in the constellation Cetus / From Wikipedia, the free encyclopedia
LHS 1140 is a red dwarf in the constellation of Cetus. Based on stellar parallax measurement, it is 48.8 light-years (15.0 parsecs) away from the Sun.[1] 'LHS' refers to the Luyten Half-Second Catalogue of stars with proper motions exceeding half a second of arc annually.[5] The star is over 5 billion years old and has only about 18% the mass of the Sun and 21% of its radius.[6] LHS 1140's rotational period is 130 days. No flares have been observed.[7]
Quick Facts Observation data Epoch J2000.0 Equinox J2000.0, Constellation ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cetus |
Right ascension | 00h 44m 59.33091s[1] |
Declination | −15° 16′ 17.5428″[1] |
Apparent magnitude (V) | 14.18[2] |
Characteristics | |
Evolutionary stage | Red dwarf |
Spectral type | M4.5V[2] |
Astrometry | |
Radial velocity (Rv) | −13.74±0.42[1] km/s |
Proper motion (μ) | RA: 318.152 mas/yr[1] Dec.: −596.623 mas/yr[1] |
Parallax (π) | 66.8287 ± 0.0479 mas[1] |
Distance | 48.80 ± 0.03 ly (14.96 ± 0.01 pc) |
Details[3] | |
Mass | 0.1844±0.0045 M☉ |
Radius | 0.2159±0.0030 R☉ |
Luminosity | 0.0038±0.0003 L☉ |
Surface gravity (log g) | 5.041±0.016 cgs |
Temperature | 3,096±48 K |
Metallicity [Fe/H] | −0.15±0.09 dex |
Rotation | 131±5 d |
Age | >5 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
ARICNS | data |
Close