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) | ±0.19 +27.49[4] km/s |
Proper motion (μ) | RA: −40.32[1] mas/yr Dec.: −11.27[1] mas/yr |
Parallax (π) | 5.37 ± 0.34[1] mas |
Distance | 610 ± 40 ly (190 ± 10 pc) |
Details | |
Luminosity | 444[5] L☉ |
Temperature | 4,202[5] K |
Metallicity [Fe/H] | ±0.099 −0.195[6] 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.[8]
References
- 1 2 3 4 5 6 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.
- 1 2 3 4 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.
- 1 2 3 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, Bibcode:2008MNRAS.389..869E, arXiv:0806.2878 , 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, Bibcode:2012A&A...546A..61D, arXiv:1208.3048 , doi:10.1051/0004-6361/201219219, A61.
- 1 2 McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, arXiv:1208.2037 , 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 -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2017-06-14.
- ↑ 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, Bibcode:2005A&A...430..165F, arXiv:astro-ph/0409579 , doi:10.1051/0004-6361:20041272.
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