![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Nearby_Stars_%252814ly_Radius%2529.svg/640px-Nearby_Stars_%252814ly_Radius%2529.svg.png&w=640&q=50)
Teegarden's Star
M-type red dwarf in the constellation Aries / From Wikipedia, the free encyclopedia
Teegarden's Star /ˈtiːɡɑːrdənz/ (SO J025300.5+165258, 2MASS J02530084+1652532, LSPM J0253+1652) is an M-type red dwarf star[4] in the constellation Aries, 12.5 light-years (3.8 parsecs) from the Solar System. Although it is near Earth it is a dim magnitude 15 and can only be seen through large telescopes. This star was found to have a very large proper motion of about 5 arcseconds per year. Only seven stars with such large proper motions are currently known.[5] Teegarden's Star hosts a planetary system with at least three planets.[10]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aries |
Right ascension | 02h 53m 00.89179s[2] |
Declination | +16° 52′ 52.6322″[2] |
Apparent magnitude (V) | 15.13[3] |
Characteristics | |
Spectral type | M7.0 V[4] |
Apparent magnitude (B) | ~17.21[5] |
Apparent magnitude (V) | ~15.40[5] |
Apparent magnitude (R) | ~14.1[6] |
Apparent magnitude (I) | ~10.4[6] |
Apparent magnitude (J) | 8.394 ± 0.027[7] |
Apparent magnitude (H) | 7.883 ± 0.040[7] |
Apparent magnitude (K) | 7.585 ± 0.046[7] |
Astrometry | |
Radial velocity (Rv) | 68.3[8] km/s |
Proper motion (μ) | RA: +3,429.083 mas/yr[2] Dec.: −3,805.541 mas/yr[2] |
Parallax (π) | 260.9884 ± 0.0934 mas[2] |
Distance | 12.497 ± 0.004 ly (3.832 ± 0.001 pc) |
Absolute magnitude (MV) | 17.22[9] |
Details | |
Mass | 0.097±0.010[10] M☉ |
Radius | 0.120±0.012[10] R☉ |
Luminosity | 0.000722±0.000005[10] L☉ |
Surface gravity (log g) | 5.19±0.2[10] cgs |
Temperature | 3,034±45[10] K |
Metallicity [Fe/H] | −0.11±0.28[10] dex |
Rotation | 99.6±1.4 days[11] |
Rotational velocity (v sin i) | <2[12] km/s |
Age | >8[12] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Location of Teegarden's Star in the constellation Aries |
Close