HD 20468

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HD 20468
Perseus constellation map.svg
Red circle.svg

Location of HD 20468 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 03h 18m 43.82583s[1]
Declination 34° 13′ 21.5473″[1]
Apparent magnitude (V) 4.82[2]
Characteristics
Spectral type K2IICN1[3]
U−B color index +1.55[2]
B−V color index +1.49[2]
Astrometry
Radial velocity (Rv) +1.80[4] km/s
Proper motion (μ) RA: +2.75[1] mas/yr
Dec.: -8.87[1] mas/yr
Parallax (π) 2.77 ± 0.23[1] mas
Distance 1,180 ± 100 ly
(360 ± 30 pc)
Absolute magnitude (MV) -2.92[5]
Details
Mass 7.0[6] M
Luminosity 3512[7] L
Surface gravity (log g) 1.09[8] cgs
Temperature 4,369[8] K
Metallicity [Fe/H] +0.03[8] dex
Rotational velocity (v sin i) 5.9[9] km/s
Other designations
BD+33°619, FK5 2232, GC 3948, HIP 15416, HR 991, HD 20468, SAO 56340
Database references
SIMBAD data

HD 20468 is a class K2II[3] (orange bright giant) star in the constellation Perseus. Its apparent magnitude is 4.82[2] and it is approximately 1180 light years away based on parallax.[1]

References[edit]

  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  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 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. ^ 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. arXiv:astro-ph/0409579Freely accessible. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. 
  5. ^ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971Freely accessible. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.  Vizier catalog entry
  6. ^ 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: 190. arXiv:1007.4883Freely accessible. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.  Vizier catalog entry
  7. ^ Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349. arXiv:1003.2335Freely accessible. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355.  Vizier catalog entry
  8. ^ a b c Earle Luck, R. (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137. 
  9. ^ 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. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401.  Vizier catalog entry