BN Camelopardalis

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Template:Short description

BN Camelopardalis
File:BNCamLightCurve.png
A visual band light curve for BN Camelopardalis, adapted from Adelman (1997)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 5.49[3] (5.34 to 5.58)[4]
Characteristics
Spectral type B9.5VpSi[5]
B−V Template:Engvar Script error: No such module "val".[3]
Variable type α2 CVn[4]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[3] km/s
Proper motion (μ) RA: +6.033[2] mas/yr
Dec.: –27.088[2] mas/yr
Parallax (π)10.5286±0.2275 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+0.13[3]
Details
MassScript error: No such module "val".[6] Template:Solar mass
RadiusScript error: No such module "val".[7] Template:Solar radius
Luminosity110[6] Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val".[7] cgs
Temperature11,561[6] K
Rotation2.73332 days[7]
Rotational velocity (v sin i)23[8] km/s
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[9]
Database references
SIMBADdata

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BN Camelopardalis is a suspected astrometric binary[10] in the northern circumpolar constellation of Camelopardalis. It appears as a variable star that is visible to the naked eye as a dim, white-hued point of light with an apparent visual magnitude that fluctuates around 5.49.[3] The system is located at a distance of around 310 light years from the Sun based on parallax,[2] and is drifting further away with a radial velocity of +9 km/s.[3]

The visible component is a weakly magnetic[11] chemically peculiar star[12][13] with a stellar classification of B9.5VpSi,[5] matching a B-type main-sequence star with an anomalous abundance of silicon.

John Ernest Winzer announced that the star is a variable star, in 1974.[14] It was given its variable star designation in 1981.[15] It ranges in brightness from 5.34 down to 5.58.[4] Samus et al. (2017) have it categorized as an α2 Canum Venaticorum variable with a period of 2.7347 days,[4] while Adelman and Sutton (2007) found a period of 2.73501 days.[12] The star has three times the mass and radius of the Sun and is radiating 110 times the Sun's luminosity from its photosphere at an effective temperature of 11,561 K.[7][6]

References

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  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ Template:Cite simbad
  10. ↑ Script error: No such module "citation/CS1".
  11. ↑ Script error: No such module "citation/CS1".
  12. ↑ a b Script error: No such module "citation/CS1".
  13. ↑ Script error: No such module "citation/CS1".
  14. ↑ Script error: No such module "citation/CS1".
  15. ↑ Script error: No such module "Citation/CS1".

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Template:Stars of Camelopardalis

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