HD 61248
Observation data EpochJ2000.0EquinoxJ2000.0 | |
---|---|
Constellation | Carina |
Right ascension | 07h35m39.72266s[1] |
Declination | −52° 32′ 01.8087″[1] |
Apparent magnitude(V) | 4.93[2] |
Characteristics | |
Spectral type | K3 III[3] |
B−Vcolor index | 1.373±0.064[2] |
Astrometry | |
Radial velocity(Rv) | +63.32±0.13[1]km/s |
Proper motion(μ) | RA:+22.137[1]mas/yr Dec.:-11.639[1]mas/yr |
Parallax(π) | 8.1036 ± 0.1335mas[1] |
Distance | 402 ± 7ly (123 ± 2pc) |
Absolute magnitude(MV) | −0.47[2] |
Details | |
Radius | 30.27+1.86 −1.95[1]R☉ |
Luminosity | 279.3±5.5[1]L☉ |
Temperature | 4,289+145 −126[1]K |
Other designations | |
Database references | |
SIMBAD | data |
HD 61248is a single[5]starin the southernconstellationofCarina.It has theBayer designationQ Carinae,[6]whileHD 61248is the star's identifier in theHenry Draper Catalogue.This star has an orange hue and is visible to the naked eye with anapparent visual magnitudeof 4.93.[2]Based uponparallaxmeasurements, it is located approximately 402light yearsin distance from theSun.The object is drifting further away with aradial velocityof +63 km/s,[1]having come to within 89.6 light-years some 1.8 million years ago.[2]
This is an aginggiant starwith astellar classificationof K3 III,[3]which means it is no longer undergoingcorehydrogen fusion.It has expanded to 30 times theSun's radiusand is radiating 279 times theluminosity of the Sunfrom its enlargedphotosphereat aneffective temperatureof 4,289 K.[1]
References
[edit]- ^abcdefghijkBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData 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 sourceatVizieR.
- ^abcdeAnderson, 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,S2CID119257644.
- ^abHouk, Nancy (1978),Michigan catalogue of two-dimensional spectral types for the HD stars,vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan,Bibcode:1978mcts.book.....H.
- ^"HD 61248".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2019-01-06.
- ^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,S2CID14878976.
- ^Kostjuk, N.D. (2002), "HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index",Institute of Astronomy of the Russian Academy of Sciences,Bibcode:2004yCat.4027....0K.