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Zeta Monocerotis

From Wikipedia, the free encyclopedia

ζ Monocerotis
Observation data
Epoch J2000      Equinox J2000
Constellation Monoceros
Right ascension 08h 08m 35.64663s[1]
Declination −2° 59′ 01.6361″[1]
Apparent magnitude (V) 4.33[2]
Characteristics
Spectral type G2Ib[3]
U−B color index +0.72[2]
B−V color index +0.97[2]
Astrometry
Radial velocity (Rv)+29.8±0.3[4] km/s
Proper motion (μ) RA: −18.81[1] mas/yr
Dec.: −4.50[1] mas/yr
Parallax (π)3.08 ± 0.27 mas[1]
Distance1,060 ± 90 ly
(320 ± 30 pc)
Absolute magnitude (MV)−3.18[5]
Details
Mass6.2[6] M☉
Luminosity2,207[5] L☉
Surface gravity (log g)1.75[7] cgs
Temperature5,289[8] K
Metallicity [Fe/H]+0.01[7] dex
Rotational velocity (v sin i)17[3] km/s
Other designations
ζ Mon, 29 Monocerotis, BD−02° 2450, GC 11051, HD 67594, HIP 39863, HR 3188, SAO 135551, CCDM J08086-0259A, WDS J08086-0259A
Database references
SIMBADdata

Zeta Monocerotis, Latinized from ζ Monocerotis, is a single,[9] yellow-hued star in the constellation Monoceros. It has an apparent visual magnitude of 4.33,[2] which is bright enough to be visible to the naked eye. The annual parallax shift as measured during the Hipparcos mission is 3.08 milliarcseconds,[1] which provides a rough distance estimate of 1,060 light years. It is moving away from the Sun with a radial velocity of +30 km/s.[4]

This star has a stellar classification of G2 Ib,[3] which matches a supergiant of type G. It has an estimated 6.2[6] times the mass of the Sun and is radiating 2,207[5] times the Sun's luminosity from its photosphere at an effective temperature of 5,289 K.[8] Zeta Monocerotis has three visual companions: component B, with separation 33.3" and magnitude 10.32, C, with separation 65.1" and magnitude 9.68, and D, with separation 38.1" and magnitude 13.4.[10]

References

  1. ^ a b c d e f Van Leeuwen, F. (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. Vizier catalog entry
  2. ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. ^ a b c Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
  4. ^ a b Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  5. ^ a b c 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. Vizier catalog entry
  6. ^ a b Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (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. Vizier catalog entry
  7. ^ a b Soubiran, Caroline; Le Campion, Jean-François; Brouillet, Nathalie; Chemin, Laurent (2016). "The PASTEL catalogue: 2016 version". Astronomy & Astrophysics. 591: A118. arXiv:1605.07384. Bibcode:2016A&A...591A.118S. doi:10.1051/0004-6361/201628497. S2CID 119258214.
  8. ^ a b McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–357. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. S2CID 118665352. Vizier catalog entry
  9. ^ Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
  10. ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. Vizier catalog entry
This page was last edited on 14 May 2023, at 12:27
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