HD 69863

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HD 69863
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Carina
A
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.27[2]
B
Right ascension Template:RA[3]
Declination Template:DEC[3]
Apparent magnitude (V) 7.62[2]
Characteristics
Spectral type A2V[4] + F2V[5]
B−V Template:Engvar Script error: No such module "val".[6]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[6] km/s
Absolute magnitude (MV)0.71[6]
A
Proper motion (μ) RA: −26.674[1] mas/yr
Dec.: -12.060[1] mas/yr
Parallax (π)12.5410±0.1714 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
B
Proper motion (μ) RA: −20.911[3] mas/yr
Dec.: -14.466[3] mas/yr
Parallax (π)12.7714±0.0329 mas[3]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Details
A
MassScript error: No such module "val".[7] Template:Solar mass
Luminosity42[8] Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val".[7] cgs
TemperatureScript error: No such module "val".[1] K
Rotational velocity (v sin i)191[9] km/s
B
RadiusScript error: No such module "val".[3] Template:Solar radius
LuminosityScript error: No such module "val".[3] Template:Solar luminosity
TemperatureScript error: No such module "val".[3] K
Metallicity [Fe/H] dex
AgeScript error: No such module "val".[7] Myr
Other designations
Template:Odlist[10]
A: Template:Odlist
B: Template:Odlist
Database references
SIMBADdata

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HD 69863 is a binary star[11] system in the southern constellation of Carina. It is visible to the naked eye as a dim point of light with a combined apparent visual magnitude of 5.16.[6] The system is located at a distance of about255 light years from the Sun based on parallax.[1][3] The dual nature of this system was announced in 1832 by German astronomer Carl Rümker.[12] As of 2015, the pair had an angular separation of Script error: No such module "val". along a position angle of 70°.[2]

The brighter primary, designated component A, has a visual magnitude of 5.27[2] and is an A-type main-sequence star with a stellar classification of A2V.[4] It is 635[7] million years old and is spinning with a projected rotational velocity of 191 km/s.[9] The star has 2.1 times the mass of the Sun.[7]

The magnitude 7.62[2] companion, component B, is a F-type main-sequence star with a class of F2V.[5] It is radiating four[3] times the luminosity of the Sun from its photosphere at an effective temperature of 6,806 K.[3] The system is a source for X-ray emission, which is most likely coming from the secondary.[13]

References

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  1. ↑ a b c d e f g Template:Cite Gaia DR2
  2. ↑ a b c d e Script error: No such module "citation/CS1".
  3. ↑ a b c d e f g h i j k Template:Cite Gaia DR2
  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ a b Script error: No such module "citation/CS1".
  6. ↑ a b c d Script error: No such module "citation/CS1".
  7. ↑ a b c d e Script error: No such module "citation/CS1".
  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ a b Script error: No such module "citation/CS1".
  10. ↑ Template:Cite simbad Component B.
  11. ↑ Script error: No such module "citation/CS1".
  12. ↑ Script error: No such module "citation/CS1".
  13. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Carina

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