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17 Monocerotis

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Star in the constellation Monoceros
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17 Monocerotis
Location of 17 Monocerotis (circled)
Observation data
Epoch J2000Equinox ICRS
Constellation Monoceros
Right ascension 06h 47m 19.82946s[1]
Declination +08°02′14.1239′′[1]
Apparentmagnitude(V) 4.77[2]
Characteristics
Spectraltype K4III[3]
U−B color index +1.65[2]
B−V color index +1.40[2]
Astrometry
Radial velocity (Rv)+46.19[4] km/s
Proper motion (μ) RA:-23.728[1] mas/yr
Dec.:-12.011[1] mas/yr
Parallax (π)6.62±0.25mas [1]
Distance 490 ± 20ly
(151 ± 6pc)
Absolutemagnitude(MV)-1.12[5]
Details
Radius 25+1
−3[1] R☉
Luminosity 538.2±23.8[1] L☉
Surface gravity (logg)1.86[6] cgs
Temperature 4,345[7] K
Metallicity [Fe/H]+0.06[5] dex
Rotational velocity (vsini)2.5[8] km/s
Other designations
17Mon, BD+08°1496, GC 8880, HD 49161, HIP 32533, HR 2503, SAO 114410
Database references
SIMBAD data

17 Monocerotis is a single[9] star located around 490[1] light years away from the Sun in the equatorial constellation of Monoceros. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.77.[2] The star is moving away from the Earth with a heliocentric radial velocity of +46 km/s.[4]

This is an aging giant star with a stellar classification of K4 III.[3] As a consequence of having exhausted the supply of hydrogen at its core, the star has expanded to 25[1] times the radius of the Sun. It is radiating around 538[1] times the Sun's luminosity from its swollen photosphere at an effective temperature of 4,345 K.[7]

References

[edit ]
  1. 1 2 3 4 5 6 7 8 9 10 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 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. 1 2 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. 1 2 Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data". Astronomy & Astrophysics. 430: 165–186. arXiv:astro-ph/0409579 . Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID 17804304.
  5. 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. S2CID 119257644. Vizier catalog entry
  6. ↑ 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.
  7. 1 2 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
  8. ↑ De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph/0608248 . Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. Vizier catalog entry
  9. ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society . 389 (2): 869–879. arXiv:0806.2878 . Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x . S2CID 14878976.

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