66 Cancri

In today's world, 66 Cancri has become a fundamental element that affects various aspects of our daily lives. Whether on a personal, professional or social level, the importance of 66 Cancri cannot be underestimated. From its impacts on health and well-being to its influence on the economy and environment, 66 Cancri plays a crucial role in the way we live and interact with the world around us. Therefore, it is vital to fully understand all aspects related to 66 Cancri, in order to make informed decisions and build a sustainable and prosperous future. In this article, we will explore in detail the different aspects of 66 Cancri and its relevance in today's society.
66 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cancer
Right ascension 09h 01m 24.13000s[1]
Declination +32° 15′ 08.2666″[1]
Apparent magnitude (V) 5.870[2] (5.95 + 8.56)[3]
Characteristics
Evolutionary stage main sequence[4]
Spectral type A2 V[2]
B−V color index 0.088±0.007[5]
Astrometry
Radial velocity (Rv)−12.8±2.9[6] km/s
Proper motion (μ) RA: +0.48[7] mas/yr
Dec.: +0.34[7] mas/yr
Parallax (π)6.8850 ± 0.1020 mas[1]
Distance474 ± 7 ly
(145 ± 2 pc)
Absolute magnitude (MV)0.14[5]
Details
Mass2.73±0.11[4] M☉
Luminosity95.7+24.6
−19.5[4] L☉
Surface gravity (log g)4.0[2][4] cgs
Temperature8,974+230
−224[4] K
Rotational velocity (v sin i)183[4] km/s
Age162[2] Myr
Other designations
66 Cnc, BD+32°1829, HD 77104, HIP 44307, HR 3587, SAO 61202, WDS 09014+3215[8]
Database references
SIMBADdata

66 Cancri is a binary star[9] system near the northern border of the zodiac constellation of Cancer, located 474 light years away from the Sun. It is visible to the naked eye as a faint, white-hued star with a combined apparent visual magnitude of 5.87.[2] The pair are moving closer to the Earth with a heliocentric radial velocity of −13 light years.[6] As of 2003, the magnitude 8.56 companion was located at an angular separation of 4.43″ along a position angle of 134° from the primary.[9]

The brighter member of the system, designated component A, is an A-type main-sequence star with a stellar classification of A2 V.[2] It is around 162[2] million years old with a high rate of spin, showing a projected rotational velocity of 183 km/s.[4] Estimates of the mass of the star range from 1.7[10] up to 2.73[4] times the mass of the Sun. It is radiating 96[4] times the Sun's luminosity from its photosphere at an effective temperature of 8,974 K.[4]

References

  1. ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d e f g Gullikson, Kevin; Kraus, Adam; Dodson-Robinson, Sarah (2016), "The Close Companion Mass-ratio Distribution of Intermediate-mass Stars", The Astronomical Journal, 152 (2): 40, arXiv:1604.06456, Bibcode:2016AJ....152...40G, doi:10.3847/0004-6256/152/2/40, S2CID 119179065.
  3. ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920.
  4. ^ a b c d e f g h i j Zorec, J.; Royer, F.; Asplund, Martin; Cassisi, Santi; Ramirez, Ivan; Melendez, Jorge; Bensby, Thomas; Feltzing, Sofia (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy and Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
  5. ^ a b 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.
  6. ^ a b 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, S2CID 59451347, A61.
  7. ^ a b van Leeuwen, F. (November 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.
  8. ^ "66 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-09.
  9. ^ a b Roberts, Lewis C. Jr.; et al. (November 2005), "Adaptive Optics Photometry and Astrometry of Binary Stars", The Astronomical Journal, 130 (5): 2262–2271, Bibcode:2005AJ....130.2262R, doi:10.1086/491586.
  10. ^ Gullikson, Kevin; et al. (August 2016), "The Close Companion Mass-ratio Distribution of Intermediate-mass Stars", The Astronomical Journal, 152 (2): 13, arXiv:1604.06456, Bibcode:2016AJ....152...40G, doi:10.3847/0004-6256/152/2/40, S2CID 119179065, 40.
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