HD 42540

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HD 42540
Pictor constellation map.svg
Red circle.svg
Location of HD 42540 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pictor
Right ascension 06h 07m 03.38998s[1]
Declination −62° 09′ 16.4914″[1]
Apparent magnitude (V) 5.04[2]
Characteristics
Spectral type K2-3III[3]
U−B color index +1.35[4]
B−V color index +1.25[4]
Variable type suspected[5]
Astrometry
Radial velocity (Rv)+21.60[6] km/s
Proper motion (μ) RA: +21.72[1] mas/yr
Dec.: -69.82[1] mas/yr
Parallax (π)9.02 ± 0.16[1] mas
Distance362 ± 6 ly
(111 ± 2 pc)
Absolute magnitude (MV)-0.18[2]
Details
Luminosity189[2] L☉
Temperature4,530[7] K
Rotational velocity (v sin i)1.7[8] km/s
Other designations
CD-62°235, FK5 2469, GC 7825, HIP 28991, HR 2196, HD 42540, NSV 2845, SAO 249451
Database references
SIMBADdata

HD 42540, also known as HR 2196, is a suspected variable star in the constellation Pictor.[5] A class K2-3III[3] orange giant, its apparent magnitude is 5.04[2] and it is approximately 362 light years away based on parallax.[1]

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 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
  3. ^ a b 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 Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
  5. ^ a b Watson, Christopher (18 January 2010). "NSV 2845". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 May 2014.
  6. ^ Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN 54001336.
  7. ^ 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.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. S2CID 54046583. Vizier catalog entry


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