Astronomy:Phi2 Cancri
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Short description: Star in the constellation Cancer
| Observation data 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[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 | |
| φ2 Cnc A: {{{names1}}} | |
| φ2 Cnc B: {{{names2}}} | |
| Database references | |
| SIMBAD | φ2 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
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ 3.0 3.1 3.2 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ "* phi02 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+phi02+Cnc.
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