HD 88955

This article is about q Velorum. For Q Velorum, see HD 88206.
HD 88955
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 10h 14m 14 44.1579s[1]
Declination −42° 07′ 18.9852″[1]
Apparent magnitude (V) 3.85[2]
Characteristics
Spectral type A2 V[2]
B−V color index +0.051±0.005[3]
Astrometry
Radial velocity (Rv)+7.4±2.7[4] km/s
Proper motion (μ) RA: −151.532[1] mas/yr
Dec.: +49.171[1] mas/yr
Parallax (π)32.7054 ± 0.3218 mas[1]
Distance99.7 ± 1.0 ly
(30.6 ± 0.3 pc)
Absolute magnitude (MV)1.39[3]
Details
Mass2.17[5] M☉
Radius2.11[5] R☉
Luminosity23.24[5] L☉
Surface gravity (log g)4.08±0.14[6] cgs
Temperature9,451±321[6] K
Metallicity [Fe/H]−0.02[7] dex
Rotational velocity (v sin i)100±4[8] km/s
Age410[5] Myr
Other designations
q Velorum, CD−41° 5713, FK5 382, GC 14076, HD 88955, HIP 50191, HR 4023, SAO 221895[9]
Database references
SIMBADdata

HD 88955 is a single,[10] white-hued star in the southern constellation of Vela. It can be viewed with the naked eye, having an apparent visual magnitude of 3.85.[2] The distance to HD 88955 can be determined from its annual parallax shift of 32.7 mas,[1] which yields a separation of 100 light years from the Sun. It is moving further from the Earth with a heliocentric radial velocity of +7 km/s.[4] Bayesian analysis suggests HD 88955 is a member of the Argus Association,[11] a group of co-moving stars usually associated with the IC 2391 open cluster.

This is an A-type main-sequence star with a stellar classification of A2 V.[2] It is about 410[5] million years old with a projected rotational velocity of 100 km/s.[8] The star has 2.17[5] times the mass of the Sun and 2.11[5] times the Sun's radius. It is radiating 23[5] times the Sun's luminosity from its photosphere at an effective temperature of 9,451 K.[6] An infrared excess has been detected from HD 88955, which analysis suggests is a (3.6±3.0)×10−7 M🜨 debris disc with a mean temperature of 138±21 K orbiting the host star at an average distance of 19.3±5.7 AU.[12]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Malagnini1990 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ a b c d e f g h Cite error: The named reference Gaspar2016 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Saffe2008 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Hales2017 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Malo2013 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference thureau2014 was invoked but never defined (see the help page).