HR 4180

HD 92449
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
HD 92449
Right ascension 10h 39m 18.3925s[1]
Declination −55° 36′ 11.765″[1]
Apparent magnitude (V) 4.29[2]
HD 92463
Right ascension 10h 39m 24.2778s[3]
Declination −55° 36′ 25.642″[3]
Characteristics
Spectral type G5 IIa[4] + B8 V[5]
B−V color index 1.025±0.003[2]
Astrometry
HD 92449
Radial velocity (Rv)+20.1±0.7[6] km/s
Proper motion (μ) RA: −19.032(91) mas/yr[1]
Dec.: 5.032(90) mas/yr[1]
Parallax (π)4.1595 ± 0.0940 mas[1]
Distance780 ± 20 ly
(240 ± 5 pc)
Absolute magnitude (MV)−2.76[2]
HD 92463
Proper motion (μ) RA: −18.941(40) mas/yr[3]
Dec.: 5.386(42) mas/yr[3]
Parallax (π)4.2647 ± 0.0405 mas[3]
Distance765 ± 7 ly
(234 ± 2 pc)
Details
Luminosity1370.29[7] L☉
Temperature5,100[7] K
Other designations
x Vel, HR 4180, WDS J10393-5536
A: CD−54 3915, HD 92449, HIP 52154, SAO 238309
B: CD−54 3675, HD 92463, SAO 238313
Database references
SIMBADHD 92449
HD 92463

HR 4180 is a double star with components HD 92449 and HD 92463 in the southern constellation of Vela. They are probably members of a binary star system.[8] HR 4180 can be viewed with the naked eye, having an apparent visual magnitude of 4.29.[2] Based upon the annual parallax shift of the two stars it is located approximately 780 light years from the Sun.[1][3] The system is moving further from the Earth with a heliocentric radial velocity of +20 km/s.[6]

The primary component of this system, HD 92449, is a bright giant with a stellar classification of G5 IIa.[4] The star radiates 1,370 times the Sun's luminosity from its photosphere at an effective temperature of 5,100 K.[7] It shares a common proper motion with the magnitude 6.06[9] star HD 92463,[10] and the pair likely form a binary system.[8] This secondary component is a B-type main-sequence star with a class of B8 V.[5] As of 2000, it had an angular separation of 51.70″ along a position angle of 105° from the primary.[9]

  1. ^ a b c d e Cite error: The named reference Gaia DR3 for HD 92449 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Gaia DR3 for HD 92463 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference perkins was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference houk1979 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference McDonald2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference wds2006 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggen1980 was invoked but never defined (see the help page).