67 Cancri

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Template:Short description

67 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cancer
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 6.07[2] (6.08 + 9.22)[3]
Characteristics
Evolutionary stage main sequence
Spectral type A8 Vn[4]
B−V Template:Engvar Script error: No such module "val".[2]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[5] km/s
Proper motion (μ) RA: −57.037[1] mas/yr
Dec.: −80.127[1] mas/yr
Parallax (π)16.7647±0.1550 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)2.25[2]
Details
67 Cnc A
Mass1.89[6] Template:Solar mass
RadiusScript error: No such module "val".[1] Template:Solar radius
LuminosityScript error: No such module "val".[1] Template:Solar luminosity
Surface gravity (log g)4.35[6] cgs
TemperatureScript error: No such module "val".[6] K
Rotational velocity (v sin i)105[7] km/s
Age867[6] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[8]
Database references
SIMBADdata

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67 Cancri is a wide binary star[9] system in the zodiac constellation of Cancer, located 195[1] light years away from the Sun. It is just visible to the naked eye as a faint, white-hued star with a combined apparent magnitude of 6.07.[2] The binary nature of this system was discovered by James South and John Herschel.[3] As of 2007, the two components have an angular separation of Script error: No such module "val"., corresponding to a projected separation of Script error: No such module "val"..[9] They are moving further from the Earth with a heliocentric radial velocity of +12 km/s.[5]

The primary, designated component A, is an A-type main-sequence star with a stellar classification of A8 Vn.[4] The 'n' notation indicates "nebulous" lines due to rapid rotation. It is a shell star,[10] with weak shell lines of singly-ionized titanium being detected in the near ultraviolet in 1970. These may have come from a sporadic mass loss event.[11] Uesugi and Fukuda (1970) gave a projected rotational velocity estimate of 105[7] km/s for the star, although Abt et al. (1997) suggested it could be as high as 205 km/s.[11]

67 Cancri A is about 867[6] million years old with 1.89[6] times the mass of the Sun and 1.90[1] times the Sun's radius. It is radiating 10.5[1] times the Sun's luminosity from its photosphere at an effective temperature of 7,982 K.[6]

References

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

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Template:Stars of Cancer

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