HD 156331

HD 156331
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension 17h 19m 30.51713s[1]
Declination −50° 03′ 49.5490″[1]
Apparent magnitude (V) 6.27[2] (7.0 + 7.0)[3]
Characteristics
Spectral type F8III + B9V[3]
B−V color index +0.41[2]
Astrometry
Radial velocity (Rv)+10.50±1.2[4] km/s
Proper motion (μ) RA: +8.76[1] mas/yr
Dec.: −32.86[1] mas/yr
Parallax (π)16.94 ± 0.51 mas[1]
Distance193 ± 6 ly
(59 ± 2 pc)
Details
HD 156331 A
Mass1.56[5] M☉
Luminosity8.6[6] L☉
Surface gravity (log g)3.46[5] cgs
Temperature6597[6] K
Metallicity [Fe/H]−0.02[5] dex
Age1.80[5] Gyr
Other designations
CD-49° 11324, HD 156331, HIP 84759, HR 6423, SAO 244631.
Database references
SIMBADdata

HD 156331 is double star in the southern constellation of Ara. As of 2014, the pair have an angular separation of less than an arc second along a position angle of 49°.[3]

  1. ^ a b c d e Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference mnrassa27_11 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Gontcharov was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference aa530_A138 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).