HD 110956

HD 110956

Star map shows star position on the northern edge of the constellation Crux
Observation data
Epoch J2000      Equinox J2000
Constellation Crux
Right ascension 12h 46m 22.71460s[1]
Declination −56° 29′ 19.7366″[1]
Apparent magnitude (V) 4.62[2]
Characteristics
Evolutionary stage Main sequence
Spectral type B2/3V[3]
U−B color index −0.61[2]
B−V color index −0.150±0.003[2]
Astrometry
Radial velocity (Rv)15.5[4] km/s
Proper motion (μ) RA: −33.03[1] mas/yr
Dec.: −14.84[1] mas/yr
Parallax (π)8.48 ± 0.22 mas[1]
Distance385 ± 10 ly
(118 ± 3 pc)
Absolute magnitude (MV)−1.05[5]
Details
Mass6.0±0.1[6] M☉
Luminosity402[7] L☉
Surface gravity (log g)4.24[8] cgs
Temperature16,780[9] K
Rotational velocity (v sin i)22±3[9] km/s
Age8.2±1.8[6] Myr
Other designations
CPD−55°5215, FK5 3018, HD 110956, HIP 62327, HR 4848, SAO 240235
Database references
SIMBADdata

HD 110956 is a single[10] star in the southern constellation of Crux. It is faintly visible to the naked eye with an apparent visual magnitude of 4.62.[2] The distance to this star is approximately 385 light years based on parallax and it is drifting further away with a radial velocity of 15.5 km/s.[4] It is a probable member of the Lower Centaurus–Crux subgroup of the Scorpius–Centaurus association.[11]

This is a B-type main-sequence star with a stellar classification of B2/3V.[3] It is a young star, estimated to be about 8 million years old, with six times the mass of the Sun.[6] The star is spinning with a projected rotational velocity of 22 km/s.[9] It is radiating around 400[7] times the luminosity of the Sun from its photosphere at an effective temperature of 16,780 K.[9]

There are multiple visual companions positioned near HD 110956. The brightest of these, with a visual magnitude of 8.93, is located at an angular separation of 51.1″ along a position angle of 166°, as of 2020. This companion was reported by J. F. W. Herschel in 1834.[12] It is an α2 CVn variable with the designation BR Cru.[13]

  1. ^ a b c d e Cite error: The named reference hipparcos was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference mk was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference rv was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference kaltcheva was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference tetzlaff was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference mcdonald was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference de_Geus_et_al_1989 was invoked but never defined (see the help page).
  9. ^ a b c d Cite error: The named reference Braganca_et_al_2012 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton_Tokovinin_2008 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference de_Zeeuw_et_al_1999 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Mason_et_al_2001 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Samus_et_al_2017 was invoked but never defined (see the help page).