HD 90853

This article is about s Carinae. For S Carinae, see HD 88366.
HD 90853
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Carina
Right ascension 10h 27m 52.72877s[1]
Declination −58° 44′ 21.8507″[1]
Apparent magnitude (V) 3.81[2]
Characteristics
Spectral type F2II[3] or F0Ib[4]
B−V color index 0.317±0.019[2]
Astrometry
Radial velocity (Rv)+9.4±0.7[2] km/s
Proper motion (μ) RA: −14.47[1] mas/yr
Dec.: +2.36[1] mas/yr
Parallax (π)2.43 ± 0.12 mas[1]
Distance1,340 ± 70 ly
(410 ± 20 pc)
Absolute magnitude (MV)−4.44[2]
Details
Mass7.00±0.55[5] M☉
Radius45.05+3.74
−4.03[6] R☉
Luminosity3,466±392[6] L☉
Surface gravity (log g)1.50[7] cgs
Temperature6,598+317
−258[6] K
Metallicity [Fe/H]−0.37[7][2] dex
Rotational velocity (v sin i)22.0[7] km/s
Age100[7] Myr
Other designations
s Car, NSV 4869, CD−58°2227, FK5 393, GC 14388, HD 90853, HIP 51232, HR 4114, SAO 238085[8]
Database references
SIMBADdata

HD 90853 is a single[9] star in the southern constellation Carina. It has the Bayer designation s Carinae, while HD 98053 is the identifier from the Henry Draper catalogue. This is a variable star with an apparent visual magnitude that ranges from 3.36 down to 3.51,[10] and thus is bright enough to be visible to the naked eye. It is located at a distance of approximately 1,340 light-years from the Sun based on parallax, and has an absolute magnitude of −4.44.[2] The star is drifting further away with a radial velocity of +9 km/s.[2]

This is an aging bright giant or supergiant star that has been assigned stellar classifications of F2II[3] and F0Ib,[4] respectively. It has seven[5] times the mass of the Sun and has expanded to 45[6] times the Sun's radius. It is spinning with a projected rotational velocity of 22 km/s.[7] The star is radiating 3,466[6] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 6,598 K.[6]

  1. ^ a b c d e Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Malaroda1975 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference vanderWal1988 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference hohle2010 was invoked but never defined (see the help page).
  6. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference Mallik2003 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Samus2017 was invoked but never defined (see the help page).