82 Cancri
  | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Cancer |
| Right ascension | 09h 15m 13.85243s[1] |
| Declination | +14° 56′ 29.4331″[1] |
| Apparent magnitude (V) | +5.33[2] |
| Characteristics | |
| Spectral type | K1 III[3] |
| U−B color index | +1.31[2] |
| B−V color index | +1.32[2] |
| Astrometry | |
| Radial velocity (Rv) | +27.49±0.19[4] km/s |
| Proper motion (μ) | RA: −40.32[1] mas/yr Dec.: −11.27[1] mas/yr |
| Parallax (π) | 5.37 ± 0.34 mas[1] |
| Distance | 610 ± 40 ly (190 ± 10 pc) |
| Absolute magnitude (MV) | −0.98[5] |
| Details | |
| Luminosity | 444[6] L☉ |
| Temperature | 4,202[6] K |
| Metallicity [Fe/H] | −0.195±0.099[7] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
82 Cancri (Pi2 Cancri, π2 Cancri) is a solitary,[3] orange-hued star in the zodiac constellation of Cancer. This is an evolved K-type giant star with a stellar classification of K1 III.[3] With an apparent visual magnitude of +5.33,[2] it is visible to the naked eye on a dark night. Based upon an annual parallax shift of 5.37 mas as seen from Earth,[1] this star is located roughly 610 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction of 0.10 magnitudes due to interstellar dust.[9]
References
- ^ a b c d e f 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.
- ^ a b c d Rybka, E. (1969), "The corrected magnitudes and colours of 278 stars near S.A. 1-139 in the UBV system", Acta Astronomica, 19: 229, Bibcode:1969AcA....19..229R.
- ^ 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.
- ^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, A61.
- ^ 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.
- ^ a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x.
- ^ Taylor, B. J. (February 1999), "Catalogs of temperatures and [Fe/H] averages for evolved G and K stars", Astronomy and Astrophysics Supplement, 134: 523–524, Bibcode:1999A&AS..134..523T, doi:10.1051/aas:1999153.
- ^ "pi.02 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-14.
{{cite web}}: CS1 maint: postscript (link) - ^ Famaey, B.; et al. (January 2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430 (1): 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272.
