HD 24480

HD 24480 is a multiple[7] star system in the northern constellation of Camelopardalis. The brighter component is a giant star with a stellar classification of K4III and an apparent magnitude of 5.20.[3] The companion is a hotter, A-[4] or B-type star that is a suspected spectroscopic binary system.[7] The visible pair have an angular separation of 1.71 arcseconds.[3]

HD 24480
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 03h 57m 08.2886s[1]
Declination +61° 06′ 31.9947″[1]
Apparent magnitude (V) 4.98[2] (5.20 + 8.08)[3]
Characteristics
Spectral type K4III + A[4]
U−B color index +1.18[2]
B−V color index +1.42[2]
Astrometry
Radial velocity (Rv)−3.82±0.49[1] km/s
Proper motion (μ) RA: −1.700[1] mas/yr
Dec.: −13.409[1] mas/yr
Parallax (π)3.3913 ± 0.1647[1] mas
Distance960 ± 50 ly
(290 ± 10 pc)
Details
A
Radius90[5] R☉
Luminosity1,854 – 1,888[5] L☉
Temperature3,986±170[5] K
Other designations
BD+60°768, HD 24480, HIP 18488, HR 1205, SAO 12968[6]
Database references
SIMBADdata

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. Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. SIMBAD. Bibcode:1986EgUBV........0M.
  3. 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.
  4. Abt, Helmut A. (2008). "Visual Multiples. IX. MK Spectral Types". The Astrophysical Journal Supplement Series. 176: 216–217. Bibcode:2008ApJS..176..216A. doi:10.1086/525529.
  5. Messineo, M.; Brown, A. G. A. (2019). "A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2". The Astronomical Journal. 158: 20. arXiv:1905.03744. Bibcode:2019AJ....158...20M. doi:10.3847/1538-3881/ab1cbd.
  6. "HD 24480". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-01-25.
  7. Parsons, Sidney B. (May 2004). "New and Confirmed Triple Systems with Luminous Cool Primaries and Hot Companions". The Astronomical Journal. 127 (5): 2915–2930. Bibcode:2004AJ....127.2915P. doi:10.1086/383546.


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