Star in the constellation Camelopardalis
HD 25291location of HD 25291 in red
Observation dataEpoch J2000.0 Equinox J2000.0 (ICRS ) Constellation Camelopardalis [ 1] Right ascension 04h 04m 27.16294s [ 2] Declination +59° 09′ 19.8327″[ 2] Apparent magnitude (V)5.12[ 3] Characteristics Spectral type F0 II[ 4] U−Bcolor index +0.47[ 3] B−Vcolor index +0.15[ 3] Variable type constant[ 5] Astrometry Radial velocity (Rv )−20.3± 0.8[ 6] km/s Proper motion (μ)RA: −3.380mas /yr [ 2] Dec.: +1.027mas /yr [ 2] Parallax (π)1.5558± 0.1047 mas [ 2] Distance 2,100 ± 100 ly pc ) Absolute magnitude (MV )−3.91[ 1] Details Mass 8.78± 0.65[ 7] M ☉ Radius 50.1[ 8] R ☉ Luminosity (bolometric) 9,878[ 7] L ☉ Surface gravity (log g )1.87[ 9] cgs Temperature 7,425[ 7] K Metallicity [Fe/H] −0.07[ 9] dex Rotational velocity (v sin i )6.8± 2[ 10] Age 32[ 9] Myr Other designations AG +59°399BD +58°690FK5 2290GC 4858HD 25291HIP 19018HR 1242SAO 24384[ 11] Database references SIMBAD data
HD 25291 , also known asHR 1242 , is a solitary,[ 12] star located in the northerncircumpolar constellation Camelopardalis . It has anapparent magnitude of 5.12,[ 3] constellation . The object is relatively far at a distant of approximately 2,100light years [ 2] radial velocity ofkm/s [ 6]
HD 25291 has a generalstellar classification of F0 II,[ 4] F-type bright giant . It has also been given a class of F2 Ia,[ 13] supergiant . Nevertheless, it has 8.8 times themass of the Sun [ 7] million years ,[ 9] girth .[ 8] bolometric luminosity 9,878 times greather that of the Sun from its enlargedphotosphere at aneffective temperature ofK [ 7] iron abundance 85% of solar levels.[ 9] projected rotational velocity ofkm/s [ 9]
Tetzlaff et al. (2011) found the object to be arunaway star with apeculiar velocity of+1.9 km/s [ 14]
^a b 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 . XHIP record for this object atVizieR .^a b c d e Brown, A. G. A. ; et al. (Gaia collaboration) (2021)."Gaia Early Data Release 3: Summary of the contents and survey properties" .Astronomy & Astrophysics 649 : A1.arXiv :2012.01533 Bibcode :2021A&A...649A...1G .doi :10.1051/0004-6361/202039657 S2CID 227254300 . (Erratum: doi :10.1051/0004-6361/202039657e ) . Gaia EDR3 record for this source atVizieR .^a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".VizieR Online Data Catalog .2237 .Bibcode :2002yCat.2237....0D . ^a b Gray, R. O.; Napier, M. G.; Winkler, L. I. (April 2001)."The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars" .The Astronomical Journal .121 (4):2148– 2158.Bibcode :2001AJ....121.2148G .doi :10.1086/319956 ISSN 0004-6256 . ^ Adelman, S. J.; Cay, I. H.; Cay, M. T.; Kocer, D. (September 2000). "On the Variability of A6 to F9 Supergiants".Information Bulletin on Variable Stars .4947 : 1.Bibcode :2000IBVS.4947....1A .ISSN 0374-0676 . ^a b Gontcharov, G. A. (November 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 .eISSN 1562-6873 .ISSN 1063-7737 .S2CID 119231169 . ^a b c d e Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (April 2010). "Masses and luminosities of O- and B-type stars and red supergiants".Astronomische Nachrichten .331 (4):349– 360.arXiv :1003.2335 Bibcode :2010AN....331..349H .doi :10.1002/asna.200911355 .eISSN 1521-3994 .ISSN 0004-6337 .S2CID 111387483 . ^a b Stassun, Keivan G.; et al. (9 September 2019)."The RevisedTESS Input Catalog and Candidate Target List" .The Astronomical Journal .158 (4): 138.arXiv :1905.10694 Bibcode :2019AJ....158..138S .doi :10.3847/1538-3881/ab3467 eISSN 1538-3881 . ^a b c d e f Lyubimkov, Leonid S.; Lambert, David L.; Korotin, Sergey A.; Rachkovskaya, Tamara M.; Poklad, Dmitry B. (8 December 2014)."Carbon abundance and the N/C ratio in atmospheres of A-, F- and G-type supergiants and bright giants" .Monthly Notices of the Royal Astronomical Society .446 (4):3447– 3460.arXiv :1411.2722 Bibcode :2015MNRAS.446.3447L .doi :10.1093/mnras/stu2299 eISSN 1365-2966 .ISSN 0035-8711 . ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 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 eISSN 1432-0746 .ISSN 0004-6361 . ^ "HR 1242" .SIMBAD Centre de données astronomiques de Strasbourg . RetrievedAugust 14, 2022 .^ Eggleton, P. P.; Tokovinin, A. A. (11 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 eISSN 1365-2966 .ISSN 0035-8711 . ^ Hardorp, J.; Rohlfs, K.; Slettebak, A.; Stock, J. (1959). "Luminous stars in the Northern Milky Way. Part I.".Hamburger Sternw. Warner & Swasey Obs .C01 : 0.Bibcode :1959LS....C01....0H . ^ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (October 12, 2010)."A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun" .Monthly Notices of the Royal Astronomical Society .410 (1). Oxford University Press (OUP):190– 200.arXiv :1007.4883 Bibcode :2011MNRAS.410..190T .doi :10.1111/j.1365-2966.2010.17434.x ISSN 0035-8711 .
