HD 89890

HD 89890

A visual band light curve for MV Velorum, adapted from Sterken et al. (1996)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 10h 20m 54.77319s[2]
Declination −56° 02′ 35.5728″[2]
Apparent magnitude (V) 4.50[3]
Characteristics
Spectral type B3 III + A0 IVpSi + A2 + K0 III[4]
B−V color index −0.102±0.014 (A + B)[5]
Astrometry
Radial velocity (Rv)+10.4±2.8[5] km/s
Proper motion (μ) RA: −7.5[6] mas/yr
Dec.: +4.0[6] mas/yr
Parallax (π)2.6564 ± 0.2314 mas[2]
Distance1,200 ± 100 ly
(380 ± 30 pc)
Absolute magnitude (MV)−3.21 (A + B)[5]
Details
A (HD 89890)
Radius10.07±0.20[7] R☉
Luminosity3,082.41[5] L☉
Surface gravity (log g)3.00±0.03[7] cgs
Temperature15,000±150[7] K
Rotational velocity (v sin i)26.8±0.5[7] km/s
Other designations
WDS J10209-5603[8]
A+B: CPD−55 3286, HIP 50676, HR 4074[8]
A: J Velorum, MV Velorum, HD 89890, SAO 237959, TYC 8604-975-1[8]
B: SAO 237960, TYC 8604-2444-1[8]
C: CD−55 3306, SAO 237958, TYC 8604-2137-1[8]
Database references
SIMBADHD 89890 (A)
HIC 50676 (A+B)
TYC 8604-2444-1 (B)
CD-55 3306 (C)

HD 89890 is the brightest member of a multiple star system with at least four components,[4] located in the southern constellation of Vela. It is visible to the naked eye with an apparent visual magnitude of 4.50.[3] The annual parallax shift of 2.6 mas[2] provides a distance estimate of around 1,200 light-years (370 parsecs). It is moving further away from Earth with a heliocentric radial velocity of +10 km/s.[5]

  1. ^ Cite error: The named reference Sterken was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference jaschek was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Veramendi2014 was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Röser1988 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Arcos2018 was invoked but never defined (see the help page).
  8. ^ a b c d e Cite error: The named reference SIMBAD was invoked but never defined (see the help page).