23 Orionis

Last updated
23 Orionis
Observation data
Epoch J2000       Equinox J2000
Constellation Orion
Right ascension 05h 22m 50.00474s [1]
Declination +03° 32′ 39.9770″ [1]
Apparent magnitude  (V)4.99 [2] (4.95 + 6.76) [3]
Characteristics
Evolutionary stage main sequence
Spectral type B1V + B3V [4]
B−V color index −0.096±0.004 [2]
Astrometry
Absolute magnitude  (MV)−2.93 [2]
23 Ori A
Radial velocity (Rv)+18.0±3.7 [5] km/s
Proper motion (μ)RA: −2.414 [1] mas/yr
Dec.: +1.230 [1] mas/yr
Parallax (π)2.7199±0.3155  mas [1]
Distance approx. 1,200  ly
(approx. 370  pc)
23 Ori B
Radial velocity (Rv)28 [6] km/s
Proper motion (μ)RA: +1.275 [7] mas/yr
Dec.: −0.552 [7] mas/yr
Parallax (π)2.5579±0.0864  mas [7]
Distance 1,280 ± 40  ly
(390 ± 10  pc)
Details
23 Ori A
Mass 12.5±0.6 [8]   M☉
Radius 6.97 [9]   R☉
Luminosity 26,546 [10]   L☉
Surface gravity (log g)4.078±0.045 [11]   cgs
Temperature 25,400 [10]   K
Rotational velocity (v sin i)350 [4]  km/s
Age 15.4±0.6 [8]   Myr
23 Ori B
Mass 6.6±0.1 [8]   M☉
Radius 4.71 [9]   R☉
Luminosity1,620 [10]   L☉
Temperature 18,700 [10]   K
Rotational velocity (v sin i)370 [4]  km/s
Age 22.8±2.3 [8]   Myr
Other designations
23 Ori, SAO 112697, WDS J05228+0333 [12]
A: BD+03°871, HD 35149, HIP 25142, HR 1770, SAO 112697
B: BD+03°872, HD 35148, HIP 25145, SAO 112699
Database references
SIMBAD data
B

23 Orionis is a double star located around 1,200 light-years (370 parsecs ) [1] away from the Sun in the equatorial constellation of Orion. [12] It is visible to the naked eye as a dim, blue-white-hued point of light with a combined apparent visual magnitude of 4.99. [2] The pair are moving away from the Earth with a heliocentric radial velocity of +18 km/s, [5] and they are members of the Orion OB1 association, subgroup 1a. [13]

Howe and Clarke (2009) catalog this as a double-lined spectroscopic binary star system [14] with a wide projected separation of 9,460  AU . [9] As of 2018, they had an angular separation of 31.9″ along a position angle of 30°. [3] The brighter member, component A, is a B-type main-sequence star with a stellar classification of B1V. The secondary, component B, is of class B3V. [4] Both stars are spinning rapidly. [4]

References

  1. 1 2 3 4 5 6 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR .
  2. 1 2 3 4 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, S2CID   119257644.
  3. 1 2 Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi: 10.1086/323920 .
  4. 1 2 3 4 5 Levato, H. (1975), "Rotational velocities and spectral types for a sample of binary systems", Astronomy and Astrophysics, 19: 91, Bibcode:1975A&AS...19...91L.
  5. 1 2 de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv: 1208.3048 , Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID   59451347, A61.
  6. ↑ Morrell, Nidia; Levato, Hugo (1991), "Spectroscopic Binaries in the Orion OB1 Association", The Astrophysical Journal Supplement Series, 75: 965, Bibcode:1991ApJS...75..965M, doi:10.1086/191556.
  7. 1 2 3 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR .
  8. 1 2 3 4 Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv: 1007.4883 , Bibcode:2011MNRAS.410..190T, doi: 10.1111/j.1365-2966.2010.17434.x , S2CID   118629873.
  9. 1 2 3 Howe, K. S.; Clarke, C. J. (January 2009), "An analysis of v sin (i) correlations in early-type binaries", Monthly Notices of the Royal Astronomical Society , 392 (1): 448–454, Bibcode:2009MNRAS.392..448H, doi: 10.1111/j.1365-2966.2008.14073.x .
  10. 1 2 3 4 Hohle, M. M.; et al. (2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten, 331 (4): 349, arXiv: 1003.2335 , Bibcode:2010AN....331..349H, doi:10.1002/asna.200911355, S2CID   111387483.
  11. ↑ Huang, Wenjin; et al. (October 2010), "A Stellar Rotation Census of B Stars: From ZAMS to TAMS", The Astrophysical Journal, 722 (1): 605–619, arXiv: 1008.1761 , Bibcode:2010ApJ...722..605H, doi:10.1088/0004-637X/722/1/605, S2CID   118532653.
  12. 1 2 "23 Ori". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019-06-08.
  13. ↑ Welty, Daniel E.; et al. (October 1999), "The Diffuse Interstellar Clouds toward 23 Orionis", The Astrophysical Journal Supplement Series, 124 (2): 465–501, arXiv: astro-ph/9905234 , Bibcode:1999ApJS..124..465W, doi:10.1086/313263, S2CID   13966185.
  14. ↑ Chini, R.; et al. (2012), "A spectroscopic survey on the multiplicity of high-mass stars", Monthly Notices of the Royal Astronomical Society, 424 (3): 1925–1929, arXiv: 1205.5238 , Bibcode:2012MNRAS.424.1925C, doi: 10.1111/j.1365-2966.2012.21317.x , S2CID   119120749.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.