Nu1 Canis Majoris

For other stars with this Bayer designation, see ν Canis Majoris.
Nu1 Canis Majoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Canis Major
Right ascension 06h 36m 22.85133s[1]
Declination −18° 39′ 35.6838″[1]
Apparent magnitude (V) 5.704[2] (5.87 + 7.61)[3]
Characteristics
Spectral type G8 III + F3 IV-V[3]
B−V color index +0.815[2]
Astrometry
Radial velocity (Rv)+26.13[2] km/s
Proper motion (μ) RA: −10.09[1] mas/yr
Dec.: +13.06[1] mas/yr
Parallax (π)12.3660 ± 0.1985 mas[4]
Distance264 ± 4 ly
(81 ± 1 pc)
Absolute magnitude (MV)+1.23[5]
Details
ν1 CMa A
Mass1.41[2] M☉
Luminosity8[2] L☉
Surface gravity (log g)3.00[6] cgs
Temperature6,091±822[2] K
Metallicity [Fe/H]−0.06[6] dex
Rotational velocity (v sin i)4.8±0.2[5] km/s
Age3.07[2] Gyr
Other designations
ν1 CMa, 6 Canis Majoris, BD−18°1480, GC 8614, HD 47138, HIP 31564, HR 2423, SAO 151694, ADS 5253, CCDM 06364-1840, WDS 06364-1840[7]
Database references
SIMBADdata

Nu1 Canis Majoris (ν1 Canis Majoris) is a binary star in the constellation Canis Major. It is visible to the naked eye with a combined apparent visual magnitude of 5.7.[2] Based on parallax shift of 12.366 mas as seen from our orbit, this system is approximately 264 light years from the Sun.

As of 2011, the pair had an angular separation of 17.29 arc seconds along a position angle of 264.2°.[8] The yellow hued magnitude 5.87[3] primary, component A, is an evolved G-type giant star with a stellar classification of G8 III.[3] Its magnitude 7.61[3] companion, component B, is a yellow-white hued F-type main sequence/subgiant hybrid with a class of F3 IV-V.[3]

  1. ^ a b c d Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  4. ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  5. ^ a b Cite error: The named reference vonEiff2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Soubiran2008 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Mason2012 was invoked but never defined (see the help page).