Teegarden's Star

Teegarden's Star

Teegarden's Star (top, center) is the 25th-nearest known star (system) to the Solar System.[1]
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]
Distance12.497 ± 0.004 ly
(3.832 ± 0.001 pc)
Absolute magnitude (MV)17.22[9]
Details
Mass0.097±0.010[10] M☉
Radius0.120±0.012[10] R☉
Luminosity0.000722±0.000005[10] L☉
Surface gravity (log g)5.19±0.2[10] cgs
Temperature3,034±45[10] K
Metallicity [Fe/H]−0.11±0.28[10] dex
Rotation99.6±1.4 days[11]
Rotational velocity (v sin i)<2[12] km/s
Age>8[12] Gyr
Other designations
Teegarden's Star, GJ 10393,[13] 2MASS J02530084+1652532, APM EO0425-0315372, FBS L 14-17, FBS 0250+167, GAT 1370, LSPM J0253+1652, SO J025300.5+165258, USNO-A2.0 1050-00774305, USNO-B1.0 1068-00028941[5]
Database references
SIMBADdata
Teegarden's Star is located in the constellation Aries.
Teegarden's Star is located in the constellation Aries.
Teegarden's Star
Location of Teegarden's Star in the constellation Aries

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]

  1. ^ Cite error: The named reference Reylé2021 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference lepine was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference davison was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference aj125_2_984 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference 2MASS was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Tanner2012 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference aj132_6_2360 was invoked but never defined (see the help page).
  10. ^ a b c d e f g Cite error: The named reference Dreizler2024 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Terrien2022 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference CARMENES was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference CNS5 was invoked but never defined (see the help page).