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Gliese 251 information


Gliese 251
Observation data
Epoch J2000      Equinox J2000
Constellation Gemini
Right ascension 06h 54m 48.96009s[1]
Declination +33° 16′ 05.4393″[1]
Apparent magnitude (V) +10.11[2]
Characteristics
Spectral type M3.0Ve[3]
U−B color index +1.20[4]
B−V color index +1.60[4]
Astrometry
Radial velocity (Rv)22.91[5] km/s
Proper motion (μ) RA: -723.99[1] mas/yr
Dec.: -398.40[1] mas/yr
Parallax (π)179.0629 ± 0.0280 mas[6]
Distance18.215 ± 0.003 ly
(5.5846 ± 0.0009 pc)
Absolute magnitude (MV)11.23[7]
Details
Mass0.360±0.015[8] M
Radius0.364±0.011[8] R
Surface gravity (log g)4.96±0.07[8] cgs
Temperature3451±51[8] K
Metallicity [Fe/H]-0.03±0.16[8] dex
Rotational velocity (v sin i)≤2[8] km/s
Other designations
Gliese 251, HD 265866, HIP 33226, LHS 1879, LTT 11941, Ross 578, Wolf 294, 2MASS J06544902+3316058[9]
Database references
SIMBADdata
ARICNSdata
Gliese 251 is located in the constellation Gemini
Gliese 251 is located in the constellation Gemini
Gliese 251
Location of Gliese 251 in the constellation Gemini

Gliese 251, also known as HIP 33226 or HD 265866, is a star located about 18 light years away from the Solar System. Located in the constellation of Gemini, it is the nearest star in this constellation.[10] It is located near the boundary with Auriga, 49 arcminutes away from the bright star Theta Geminorum; due to its apparent magnitude of +9.89 it cannot be observed with the naked eye.[2] The closest star to Gliese 251 is QY Aurigae, which is located 3.5 light years away.[11]

Gliese 251 is a red dwarf with a spectral type of M3V[3] with an effective temperature of about 3300 K.[3] Its mass has been measured to be around 0.36 solar masses[8] and its radius is about 36% solar radii.[8] Its metallicity is likely slightly less than that of the Sun.[8] Observations at infrared wavelengths rule out the presence of a circumstellar disk around it.[12]

  1. ^ a b c d van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Archived from the original on 2019-12-07. Retrieved 2017-02-09.
  2. ^ a b Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. ^ a b c Lépine, Sébastien (2013). "A Spectroscopic Catalog of the Brightest (J < 9) M Dwarfs in the Northern Sky". The Astronomical Journal. 145 (4): 102. arXiv:1206.5991. Bibcode:2013AJ....145..102L. doi:10.1088/0004-6256/145/4/102. S2CID 117144290.
  4. ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M. Archived from the original on 2019-12-08. Retrieved 2017-02-09.
  5. ^ Nidever, David L.; et al. (2013). "Radial Velocities for 889 Late-Type Stars". The Astrophysical Journal Supplement Series. 141 (2): 503–522. arXiv:astro-ph/0112477. Bibcode:2002ApJS..141..503N. doi:10.1086/340570. S2CID 51814894.
  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. ^ "ARICNS 4C00526". ARICNS. Archived from the original on 31 August 2021. Retrieved 8 February 2017.
  8. ^ a b c d e f g h i Cite error: The named reference Stock2020 was invoked but never defined (see the help page).
  9. ^ "GJ 251". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 February 2017.
  10. ^ "Closest Stars". Archived from the original on 11 April 2023. Retrieved 8 February 2017.
  11. ^ "Stars within 15 light-years of Wolf 294". The Internet Stellar Database. Retrieved 7 February 2017.
  12. ^ Beichman, C. A.; et al. (2006). "New Debris Disks around Nearby Main-Sequence Stars: Impact on the Direct Detection of Planets". The Astrophysical Journal. 652 (2): 1674–1693. arXiv:astro-ph/0611682. Bibcode:2006ApJ...652.1674B. doi:10.1086/508449. S2CID 14207148.

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