Gliese 908

Gliese 908

A visual band light curve for BR Piscium, plotted from ASAS-SN data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Pisces
Right ascension 23h 49m 12.52790s[2]
Declination 02° 24′ 04.4072″[2]
Apparent magnitude (V) 8.93 - 9.03[3]
Characteristics
Spectral type M1V Fe-1[4]
Variable type BY Dra[3]
Astrometry
Radial velocity (Rv)−71.79[5] km/s
Proper motion (μ) RA: 992.665[5] mas/yr
Dec.: −968.648[5] mas/yr
Parallax (π)169.2163 ± 0.0281 mas[6]
Distance19.275 ± 0.003 ly
(5.9096 ± 0.0010 pc)
Absolute magnitude (MV)+10.1[7]
Details
Mass0.37[8] M☉
Radius0.39[9] R☉
Luminosity (bolometric)0.022[9] L☉
Surface gravity (log g)4.86[9] cgs
Temperature3,570[9] K
Metallicity [Fe/H]−0.51±0.05[10] dex
Rotational velocity (v sin i)2.25[11] km/s
Other designations
BR Piscium, BD+01°4774, GJ 908[12], HIP 117473[2], SAO 128397, PPM 174453, G 29-68, G 31-6, LHS 550[13], LTT 17014, PLX 5763[14], TYC 586-610-1[15], GSC 00586-00610, IRAS 23466+0207, 2MASS J23491255+0224037, Lalande 46650
Database references
SIMBADdata
Gliese 908 is located in the constellation Pisces
Gliese 908 is located in the constellation Pisces
Gliese 908
Location of Gliese 908 in the constellation Pisces

Gliese 908 is a red dwarf star, located in constellation Pisces at 19.3 light-years from Earth. It is a BY Draconis variable star with a variable star designation of BR Piscium. Its apparent magnitude varies between magnitude 8.93 and magnitude 9.03 as a result of starspots and varying chromospheric activity.

The variability of Gliese 908 was confirmed in 1994, although no period could be detected in its brightness changes.[16] It was entered into the General Catalogue of Variable Stars in 1997.[17]

Gliese 908 is a cool main sequence star, a red dwarf, with a spectral class of M1V Fe-1. The suffix indicates a noticeable deficiency in heavy elements.[4]

  1. ^ Cite error: The named reference ASAS-SN was invoked but never defined (see the help page).
  2. ^ a b c Perryman; et al. (1997). "HIP 117473". The Hipparcos and Tycho Catalogues. Archived from the original on 2016-03-04. Retrieved 2015-09-21.
  3. ^ a b Cite error: The named reference gcvs was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference perkins was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference dr2 was invoked but never defined (see the help page).
  6. ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  7. ^ Cite error: The named reference borosaikia was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference hades was invoked but never defined (see the help page).
  9. ^ a b c d Cite error: The named reference maldonado was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Lindgren2017 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference houdebine was invoked but never defined (see the help page).
  12. ^ Gliese, W.; Jahreiß, H. (1991). "Gl 908". Preliminary Version of the Third Catalogue of Nearby Stars. Archived from the original on 2016-03-04. Retrieved 2015-09-21.
  13. ^ Luyten, Willem Jacob (1979). "LHS 550". LHS Catalogue, 2nd Edition. Archived from the original on 2020-09-25. Retrieved 2015-10-15.
  14. ^ Van Altena W. F.; Lee J. T.; Hoffleit E. D. (1995). "GCTP 5763". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.). Archived from the original on 2016-03-04. Retrieved 2015-09-21.
  15. ^ Perryman; et al. (1997). "HIP 117473". The Hipparcos and Tycho Catalogues. Archived from the original on 2016-03-04. Retrieved 2015-09-21.
  16. ^ Cite error: The named reference weis was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference ibvs was invoked but never defined (see the help page).