11 Camelopardalis

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Template:Short description

11 Camelopardalis
File:BVCamLightCurve.png
A light curve for BV Camelopardalis, plotted from Hipparcos data[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Camelopardalis
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 5.08[3]
Characteristics
Spectral type B3 Ve[4]
B−V Template:Engvar −0.080[5]
Variable type Be[6]
Astrometry
Proper motion (μ) RA: −6.264[2] mas/yr
Dec.: −7.118[2] mas/yr
Parallax (π)4.7543±0.1224 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−1.38[5]
Details
MassTemplate:Val[7] Template:Solar mass
Radius7.87[8] Template:Solar radius
LuminosityTemplate:Val[7] Template:Solar luminosity
Surface gravity (log g)Template:Val[7] cgs
TemperatureTemplate:Val[7] K
Rotational velocity (v sin i)Template:Val[7] km/s
AgeTemplate:Val[9] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[10]
Database references
SIMBADdata

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File:12 Camelopardalis.jpg
11 Camelopardalis and its reddish companion 12 Camelopardalis

11 Camelopardalis is a single[11] star in the northern circumpolar constellation of Camelopardalis, located around 690 light years away from the Sun as determined by parallax. It has the variable star designation BV Camelopardalis; 11 Camelopardalis is the Flamsteed designation. This object is visible to the naked eye as a faint, blue-white hued star with a baseline apparent visual magnitude of +5.22.[5] It forms a double star with 12 Camelopardalis, which is only 3 arcminutes away.

This is a main sequence Be star with a stellar classification of B3 Ve.[4] John R. Percy et al. discovered that 11 Camelopardalis is a variable star in 1979, and published that finding in 1981.[12] It was given its variable star designation in 1987.[13] Samus et al. (2017) classify it as a Be variable, rather than a Gamma Cassiopeiae type, and it ranges from a peak Hipparcos magnitude of 5.10 down to 5.22.[6] The star is spinning with a projected rotational velocity of 95 km/s,[7] but is being viewed from an extreme pole-on position. Hence it is spinning much more rapidly than indicated. Outbursts of hydrogen emission lines have been observed, as well as rapid changes in hydrogen line profiles.[14] It is 25[9] million years old with around six[7] times the mass of the Sun.

References

Template:Reflist

Template:Stars of Camelopardalis

  1. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named HipDataAccess
  2. ↑ a b c d e Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR3
  3. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named vsx
  4. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Slettebak1982
  5. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named Anderson2012
  6. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Samus2017
  7. ↑ a b c d e f g Cite error: Invalid <ref> tag; no text was provided for refs named Zorec2016
  8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named kervella2022
  9. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Tetzlaff2011
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Eggleton2008
  12. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Percy1981
  13. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Kholopov1987
  14. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Ballereau1987
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