Gliese 282

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Gliese 282
Observation data
Epoch J2000       Equinox 2000
Constellation Monoceros [1]
Right ascension 07h 39m 59.329s [2]
Declination −03° 35′ 51.03″ [2]
Apparent magnitude  (V)7.30 [3] + 9.01 [3] + 9.87 [4]
Characteristics
Spectral type K2V [5] + K7V [6] + M1.5Ve [7]
Variable type A: BY Dra [8]
Astrometry
A
Radial velocity (Rv)−18.40±0.14 [2] km/s
Proper motion (μ)RA: +70.078 [2] mas/yr
Dec.: −278.117 [2] mas/yr
Parallax (π)71.0323±0.0243  mas [2]
Distance 45.92 ± 0.02  ly
(14.078 ± 0.005  pc)
Absolute magnitude  (MV)+6.42 [1]
Orbit [9]
PrimaryCa
CompanionCb
Period (P)18.254+0.116
−0.117 yr
Eccentricity (e)0.227±0.001
Inclination (i)93.137+0.087
−0.086°
Longitude of the node (Ω)136.616+0.165
−0.167°
Argument of periastron (ω)
(secondary)		181.395+0.738
−0.736°
Details
Gl 282 A
Radius 0.78 [2]   R☉
Luminosity 0.29 [2]   L☉
Surface gravity (log g)4.40 [10]   cgs
Temperature 4,956 [10]   K
Metallicity [Fe/H]−0.12 [10]   dex
Rotational velocity (v sin i)1.77 [8]  km/s
Age 300−350 [7]   Myr
Gl 282 B
Mass 0.64 [11]   M☉
Radius 0.73 [11]   R☉
Luminosity0.11 [11]   L☉
Surface gravity (log g)4.47 [11]   cgs
Temperature 3,874 [11]   K
Metallicity [Fe/H]−0.25 [12]   dex
Age 680−720 [7]   Myr
Gl 282 Ca
Mass 0.539+0.008
−0.007 [9]   M☉
Radius 0.51±0.05 [9]   R☉
Luminosity 0.044±0.01 [9]   L☉
Rotation 12.2±0.1 [9] days
Age 740±100 [9]   Myr
Gl 282 Cb
Mass 0.185±0.001 [9]   M☉
Other designations
Gl 282, HD 61606, HIP 37349, WDS J07400-0336, 2MASS J07395932-0335506, V869 Mon [13]
Gl 282 A: BD−03°2001, SAO 134954
Gl 282 B: BD−03°2002, SAO 134958
Gl 282 C: G 112-29, NLTT 18149
Database references
SIMBAD AB
A
B
C
ARICNS A
B
C

Gliese 282 is a star system composed of four stars in the equatorial constellation of Monoceros. At a distance of 46 light years, this star has an apparent magnitude of 7.26[ citation needed ] when viewed from Earth. It is not visible to the naked eye.

The Gl 282AB star system is composed of two K- type main-sequence stars. The primary component, Gliese 282A, is a BY Draconis type variable star with a stellar classification of K2V. It has an effective temperature of 4,956  K. The companion, Gliese 282B, is a smaller, class K5V star. As of 2003, the pair had an angular separation of 58.30 arc seconds along a position angle of 113°. [3] This is equivalent to a projected physical separation of 824  AU. [7]

There is a distant common proper motion companion (G 112-29) at an angular separation of 1.09°. At the estimated distance of Gl 282AB, this corresponds to a projected separation of 55,733 AU (0.88128  light-years), making it one of the widest known physical companions. Initially believed to be a red dwarf star with a stellar classification of M1.5Ve, [7] it turned out to be a pair of red dwarfs (Ca and Cb) with masses 0.55M☉ and 0.19M☉, orbiting each other on 6591+136
−177 days orbit. [14]

References

  1. 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 7 8 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466–3471, Bibcode:2001AJ....122.3466M, doi: 10.1086/323920 , archived from the original on 2019-07-04, retrieved 2015-07-22.
  4. ↑ Koen, C.; Kilkenny, D.; Van Wyk, F.; Marang, F. (2010). "UBV(RI)C JHK observations of Hipparcos-selected nearby stars". Monthly Notices of the Royal Astronomical Society. 403 (4): 1949. Bibcode:2010MNRAS.403.1949K. doi: 10.1111/j.1365-2966.2009.16182.x .
  5. ↑ Montes, D.; et al. (2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society , 328 (1): 45–63, arXiv: astro-ph/0106537 , Bibcode:2001MNRAS.328...45M, doi: 10.1046/j.1365-8711.2001.04781.x , S2CID   55727428.
  6. ↑ Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal , 132 (1): 161–170, arXiv: astro-ph/0603770 , Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID   119476992.
  7. 1 2 3 4 5 Poveda, A.; et al. (November 2009), "G 112-29 (=NLTT 18149): A Very Wide Companion to GJ 282 AB with a Common Proper Motion, Common Parallax, Common Radial Velocity, and Common Age", The Astrophysical Journal, 706 (1): 343–347, arXiv: 0910.2956 , Bibcode:2009ApJ...706..343P, doi:10.1088/0004-637X/706/1/343, S2CID   116938161.
  8. 1 2 Mishenina, T. V.; et al. (November 2012), "Activity and the Li abundances in the FGK dwarfs", Astronomy & Astrophysics, 547: 8, arXiv: 1210.6843 , Bibcode:2012A&A...547A.106M, doi:10.1051/0004-6361/201118412, S2CID   119287319, A106.
  9. 1 2 3 4 5 6 7 Biller, B. A.; Grandjean, A.; Messina, S.; Desidera, S.; Delorme, P.; Lagrange, A.-M.; Hambsch, F.-J.; Mesa, D.; Janson, M.; Gratton, R.; D’Orazi, V.; Langlois, M.; Maire, A.-L.; Schlieder, J.; Henning, T. (February 2022), "Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey", Astronomy & Astrophysics, 658: A145, arXiv: 2112.05457 , doi:10.1051/0004-6361/202142438, ISSN   0004-6361.
  10. 1 2 3 Mishenina, T. V.; et al. (April 2013), "Abundances of neutron-capture elements in stars of the Galactic disk substructures", Astronomy & Astrophysics, 552: 12, arXiv: 1303.1730 , Bibcode:2013A&A...552A.128M, doi:10.1051/0004-6361/201220687, S2CID   119268097, A128.
  11. 1 2 3 4 5 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  12. ↑ Newton, Elisabeth R.; et al. (January 2014), "Near-infrared Metallicities, Radial Velocities, and Spectral Types for 447 Nearby M Dwarfs", The Astronomical Journal, 147 (1): 24, arXiv: 1310.1087 , Bibcode:2014AJ....147...20N, doi:10.1088/0004-6256/147/1/20, S2CID   26818462, 20.
  13. ↑ "HD 61606", SIMBAD , Centre de données astronomiques de Strasbourg , retrieved 2016-01-05.
  14. ↑ Baroch, D.; et al. (2021), "The CARMENES search for exoplanets around M dwarfs", Astronomy & Astrophysics, 653: A49, arXiv: 2105.14770 , doi:10.1051/0004-6361/202141031, S2CID   235253852.
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