Phi2 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cancer
Right ascension 08h 26m 47.06931s[1]
Declination +26° 56′ 07.7515″[1]
Apparent magnitude (V) +5.54 (6.26 + 6.31)[2]
Characteristics
Spectral type A6V + A3V[2]
Astrometry
Proper motion (μ) RA: −9.60[1] mas/yr
Dec.: +0.21[1] mas/yr
Parallax (π)11.83 ± 0.71 mas[1]
Distance280 ± 20 ly
(85 ± 5 pc)
Absolute magnitude (MV)+2.65[3]
Details
Luminosity9.1[3] L☉
Metallicity [Fe/H]−0.04±0.02[3] dex
Other designations
φ2 Cnc, 23 Cancri, BD+27° 1612, FK5 2633, HIP 41404[4]
φ2 Cnc A: HD 71151, HR 3311, SAO 80188
φ2 Cnc B: HD 71150, HR 3310, SAO 80187
Database references
SIMBADφ2 Cnc A
φ2 Cnc B

Phi2 Cancri (φ2 Cancri) is a binary star in the constellation Cancer, about 280 light-years from Earth. Both components are white A-type main-sequence dwarfs with apparent magnitudes of +6.3. They are separated by 5.126 arcseconds on the sky, and their mean apparent brightness is +5.55 magnitudes.[2]

References

  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
  2. ^ a b c Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
  3. ^ a b c Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
  4. ^ "* phi02 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-09.


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