22 Camelopardalis

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Template:Short description

22 Camelopardalis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Camelopardalis
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 7.03[2]
Characteristics
Spectral type F5 V[3]
B−V Template:Engvar Template:Val[2]
Astrometry
Radial velocity (Rv)Template:Val[4] km/s
Proper motion (μ) RA: +10.514[1] mas/yr
Dec.: −131.789[1] mas/yr
Parallax (π)15.4048±0.1014 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)3.14[3]
Orbit[5]
Period (P)Template:Val
Eccentricity (e)Template:Val
Periastron epoch (T)Template:Val
Argument of periastron (ω)
(secondary)		Template:Val°
Semi-amplitude (K1)
(primary)		Template:Val km/s
Details
Mass1.34[6] Template:Solar mass
Radius1.68[1] Template:Solar radius
Luminosity5.215[1] Template:Solar luminosity
Surface gravity (log g)4.26[6] cgs
TemperatureTemplate:Val[6] K
Metallicity [Fe/H]0.01[4] dex
Age1.515[6] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[7]
Database references
SIMBADdata

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22 Camelopardalis is a binary star system in the northern circumpolar constellation of Camelopardalis,[7] located 212 light years away from the Sun.[1] It has an apparent visual magnitude of 7.03,[2] which is below the normal limit for visibility with the naked eye. This object is moving further from the Earth with a mean heliocentric radial velocity of +10 km/s.[4] Eggen (1991) listed it as a member of the IC 2391 supercluster.[8] It has also been catalogued as a member of the Hyades group. However, Griffin (2005) suggests it belongs to neither.[5]

This is a single-lined spectroscopic binary system with an orbital period of 81.5 days and a significant eccentricity of 0.14. It has an 'a sin i' value of Template:Convert,[5] where a is the semimajor axis and i is the orbital inclination to the line of sight from the Earth. This value provides a lower bound on the true semimajor axis of their orbit.

The visible component is an F-type main-sequence star with a stellar classification of F5 V.[3] It is an estimated 1.5[6] billion years old with 1.3[6] times the mass of the Sun and 1.7[1] times the Sun's radius. It is radiating 5.2[1] times the Sun's luminosity from its photosphere at an effective temperature of 6,732 K.[6]

References

Template:Reflist

Template:Stars of Camelopardalis

  1. ↑ a b c d e f g h i j Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR2
  2. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named Anderson2012
  3. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named abt2004
  4. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named Casagrande2011
  5. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named Griffin2005
  6. ↑ a b c d e f g Cite error: Invalid <ref> tag; no text was provided for refs named David2015
  7. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
  8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Eggen1991
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