Phi² Cancri

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]

For other stars with this Bayer designation, see φ Cancri.

Phi² Cancri

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Cancer
Right ascension	08^h 26^m 47.06931^s[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[1] mas
Distance	280 ± 20 ly (85 ± 5 pc)
Absolute magnitude (MV)	+2.65[3]
Details
Luminosity	9.1[3] L☉
Metallicity [Fe/H]	−0.04±0.02[3] dex
Other designations
φ^2 Cnc, 23 Cancri, BD+27° 1612, FK5 2633, HIP 40023, SAO 79995[4]
φ^2 Cnc A: HD 71150, HR 3311
φ^2 Cnc B: HD 71150, HR 3310
Database references
SIMBAD	φ^2 Cnc A
	φ^2 Cnc B

References

1. 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.
2. 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.
3. 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.
4. "* phi02 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-09.