HD 90132

HD 90132
Location of HD 90132 in red
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Antlia
Right ascension 10h 23m 29.29608s[1]
Declination −38° 00′ 35.4255″[1]
Apparent magnitude (V) 5.33±0.01[2]
Characteristics
Spectral type A8 V[3]
B−V color index +0.25[4]
Astrometry
Radial velocity (Rv)17±4.2[5] km/s
Proper motion (μ) RA: −158.833 mas/yr[1]
Dec.: −53.705 mas/yr[1]
Parallax (π)24.2034 ± 0.0725 mas[1]
Distance134.8 ± 0.4 ly
(41.3 ± 0.1 pc)
Absolute magnitude (MV)+2.25[6]
Details
Mass1.69±0.27[7] M☉
Radius1.87±0.87[7] R☉
Luminosity9.79±0.06[8] L☉
Surface gravity (log g)4.15[9] cgs
Temperature7,737±263[9] K
Metallicity [Fe/H]−0.13[10] dex
Rotational velocity (v sin i)270[11] km/s
Age70[12] Myr
Other designations
64 G. Antliae[13], CD−37°6509, CPD−37°4123, FK5 1269, GC 14281, HD 90132, HIP 50888, HR 4086, SAO 201346[14]
Database references
SIMBADdata

HD 90132 (HR 4086) is a solitary[15] white hued star located in the southern constellation Antlia. It has an apparent magnitude of 5.33,[2] making it one of the brighter members of this generally faint constellation. The star is relatively close at a distance of 135 light years[1] but is receding with a heliocentric radial velocity of 17 km/s.[5]

HD 90132 has a stellar classification of A8 V,[3] indicating that it is an ordinary A-type main-sequence star. At present it has 1.69 times the mass of the Sun and 1.87 times the radius of the Sun.[7] Despite a young age of 70 million years,[12] the star has a lower surface gravity than expected.[9] This is due to the equator being 18% larger than the poles,[16] which is due to a high projected rotational velocity of 270 km/s.[11] Nevertheless, it shines with a luminosity of 9.8 L☉[8] from its photosphere at an effective temperature of 7,737 K.[9] HD 90132 is slightly metal deficient with a metallicity 74% that of Sun.[10]

This star was observed for infrared excess suggesting the presence of a circumstellar disk, but as of 2017 no excess have been found.[17]

  1. ^ a b c d e Cite error: The named reference EDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1982 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  9. ^ a b c d Cite error: The named reference David2015 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Netopil2017 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Huang1953 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Vican2012 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference van Belle2012 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Meshkat2017 was invoked but never defined (see the help page).