17 Camelopardalis

17 Camelopardalis is a single[7] star in the northern circumpolar constellation of Camelopardalis, located roughly 960 light years away from the Sun.[1] It is visible to the naked eye as a faint, red-hued star with an apparent visual magnitude of 5.44.[2] This object is moving closer to the Earth with a heliocentric radial velocity of −20 km/s.[1]

17 Camelopardalis
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 05h 30m 10.20215s[1]
Declination +63° 04′ 01.9973″[1]
Apparent magnitude (V) 5.44[2]
Characteristics
Spectral type M1IIIa[3]
B−V color index 1.704±0.004[4]
Variable type suspected[2]
Astrometry
Radial velocity (Rv)−20.49±0.16[1] km/s
Proper motion (μ) RA: −5.129[1] mas/yr
Dec.: −5.294[1] mas/yr
Parallax (π)3.4036 ± 0.1812 mas
Distance960 ± 50 ly
(290 ± 20 pc)
Absolute magnitude (MV)–1.85[4]
Details
Radius83.38[1] R☉
Luminosity1,603.447[1] L☉
Temperature3,818[5] K
Other designations
17 Cam, NSV 2003, BD+62°759, FK5 203, HD 35583, HIP 25769, HR 1802, SAO 13518[6]
Database references
SIMBADdata

This is an aging red giant star, currently on the asymptotic giant branch,[8] with a stellar classification of M1IIIa.[3] It is a suspected small amplitude variable.[2] The star has expanded to 83[1] times the Sun's radius and is radiating 1,603[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,818 K.[5]

References
  1. 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. Samus, N. N.; Durlevich, O. V.; et al. (2004). "VizieR Online Data Catalog: Combined General Catalogue of Variable Stars (Samus+ 2004)". VizieR On-line Data Catalog: II/250. Originally Published in: 2004yCat.2250....0S. 2250. Bibcode:2004yCat.2250....0S.
  3. Kwok, Sun; Volk, Kevin; Bidelman, William P. (1997). "Classification and Identification of IRAS Sources with Low-Resolution Spectra". The Astrophysical Journal Supplement Series. 112 (2): 557. Bibcode:1997ApJS..112..557K. doi:10.1086/313038.
  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.
  5. McDonald, I.; et al. (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.
  6. "17 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-16.
  7. 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.
  8. Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". Astronomical Journal. 104 (1): 275–313. Bibcode:1992AJ....104..275E. doi:10.1086/116239.
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