Gliese 408

Gliese 408
Observation data
Epoch J2000      Equinox J2000
Constellation Leo
Right ascension 11h 00m 04.25701s[1]
Declination +22° 49′ 58.6450″[1]
Apparent magnitude (V) 10.020[2]
Characteristics
Spectral type M2.5V[3]
U−B color index +1.22[4]
B−V color index +1.55[4]
V−R color index +1.08[4]
R−I color index +1.31[4]
Astrometry
Radial velocity (Rv)2.65±0.14[1] km/s
Proper motion (μ) RA: -426.958 mas/yr[1]
Dec.: -282.298 mas/yr[1]
Parallax (π)148.1986 ± 0.0253 mas[1]
Distance22.008 ± 0.004 ly
(6.748 ± 0.001 pc)
Absolute magnitude (MV)10.82[4]
Details
Mass0.406 ± 0.007[5] M☉
Radius0.43[6] R☉
Luminosity (visual, LV)0.0037[7] L☉
Surface gravity (log g)5.0[3] cgs
Temperature3530[3] K
Metallicity [Fe/H]-0.14[5] dex
Rotational velocity (v sin i)<2.3[5] km/s
Other designations
GJ 408, HIP 53767, LHS 6193, LTT 12942, NLTT 25946, Ross 104, TYC 1978-1286-1[2]
Database references
SIMBADdata
ARICNSdata

Gliese 408 is a star located 22.0 light-years (6.7 parsecs) from the Solar System, located in the constellation of Leo. The stars nearest to Gliese 408 are Gliese 402, at 6.26 light years, and AD Leonis, at 6.26 light years.[7]

Gliese 408 is a red dwarf with a spectral type of M2.5V.[3] Much dimmer than the Sun, it has a luminosity of only 0.37% compared to the Sun,[7] but still it is much more luminous than other red dwarf stars, like Proxima Centauri. Its effective temperature is about 3400 to 3500 K;[3] its mass is about 41% compared to the Sun,[5] and its radius is about 43% that of the Sun.[6] Its rotational velocity is at most 2.3 km/s. No evidence of a circumstellar disk has been found around Gliese 408.[8]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Lepine was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference ARICNS was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference Jenkins was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference CADARS was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference ISD was invoked but never defined (see the help page).
  8. ^ Lestrade, J.-F.; Wyatt, M. C.; Bertoldi, F.; Dent, W. R. F.; Menten, K. M. (2006). "Search for cold debris disks around M-dwarfs". Astronomy and Astrophysics. 460 (3): 773–741. arXiv:astro-ph/0609574. Bibcode:2006A&A...460..733L. doi:10.1051/0004-6361:20065873. S2CID 119328045.