Gliese 1

Coordinates: Sky map 00h 05m 24.4279s, −37° 21′ 26.503″
Source: Wikipedia, the free encyclopedia.
Gliese 1
Observation data
Epoch J2000      Equinox J2000
Constellation Sculptor
Right ascension 00h 05m 24.4279s[1]
Declination −37° 21′ 26.503″[1]
Apparent magnitude (V) 8.57[2]
Characteristics
Spectral type M2V[3]
U−B color index +1.04[4]
B−V color index +1.46[4]
Variable type BY Dra[5]
Distance
14.175 ± 0.002 ly
(4.3460 ± 0.0007 pc)
Absolute magnitude (MV)10.35[8]
Details
Gyr
NLTT 134, NSV 15017, SAO 192348[2]
Database references
SIMBADdata
Gliese 1 is located in the constellation Sculptor.
Gliese 1 is located in the constellation Sculptor.
Gliese 1
Location of Gliese 1 in the constellation Sculptor

Gliese 1 is a

light years. Because of its proximity to the Earth it is a frequent object of study and much is known about its physical properties and composition. However, with an apparent magnitude
of about 8.6 it is too faint to be seen with the naked eye.

History

This star's high proper motion was first documented by Benjamin Gould in 1885. At that time the star was identified as Cordoba Z.C. 23h 1584.[12] As it lies very close to the origin of the astronomical

Luyten Half-Second star catalogues.[13][14]

Properties

The stellar classification of this star has been rated from M1.5V to M4.0V by various sources.[15] Gliese 1 is estimated to have 33% of the Sun's mass and 33% of the Sun's radius.[9]

This star is suspected of being a BY Draconis-type variable star with the provisional variable star designation NSV 15017.[5] It is also suspected of being a flare star.[16] Like other flare stars, it emits X-rays.[17] The temperatures of the layers of the atmosphere of this star have been measured.[18]

This star has been examined for an orbiting companion using speckle interferometry in the near

AU or less. The radial velocity shows little or no variability, with a measurement precision of less than 20 m/s.[20]

The

runaway stars. This star has a high peculiar velocity of 111.3 km/s, and the velocity vector for this star may link it with the Tucana-Horologium and/or the AB Doradus stellar associations.[23]

References

  1. ^
    Bibcode:1997A&A...323L..49P
    .
  2. ^
    Centre de Données astronomiques de Strasbourg
    . Retrieved 2006-06-12.
  3. Bibcode:1982MSS...C05....0H
    .
  4. ^
    Bibcode:1973MNSSA..32...43C
    .
  5. ^
    Centre de Données astronomiques de Strasbourg
    . Retrieved 2009-12-14.
  6. Bibcode:1953GCRV..C......0W
    .
  7. doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR
    .
  8. S2CID 17464039
    .
  9. ^
    S2CID 225094682
    .
  10. S2CID 119181646
    .
  11. doi:10.1051/0004-6361:200810377
    .
  12. doi:10.1002/asna.18851111612
    .
  13. Bibcode:1969VeARI..22....1G
    .
  14. Bibcode:1976lhsc.book.....L
    .
  15. ^ M1.5: SIMBAD. M3: Gautier, Thomas N., III; et al. (2007). M3: Schmitt, J. H. M. M.; et al. (2004). M4: Eggen, Olin J. (1996) M4: Pasinetti-Fracassini, L. E.; et al. (2001).
  16. S2CID 425754. Note: Search the VizieR catalogue II/224
    for HD 225213.
  17. doi:10.1086/176149
    .
  18. hdl:1885/36235
    .
  19. Bibcode:1997A&A...325..159L
    .
  20. S2CID 16845441
    .
  21. doi:10.1086/117797
    .
  22. Bibcode:1991RMxAA..22..255A
    .
  23. S2CID 118629873
    .
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