78 Cancri

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78 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cancer
Right ascension 09h 09m 02.31165s[1]
Declination +17° 28′ 10.7518″[1]
Apparent magnitude (V) 7.19[2]
Characteristics
Spectral type K3 III[2]
B−V color index 1.207±0.008[2]
Astrometry
Radial velocity (Rv)+77.70±0.15[1] km/s
Proper motion (μ) RA: −38.419[1] mas/yr
Dec.: −32.292[1] mas/yr
Parallax (π)5.9540 ± 0.0572[1] mas
Distance548 ± 5 ly
(168 ± 2 pc)
Absolute magnitude (MV)0.56[2]
Details
Mass1.62[3] M☉
Radius10.92+0.50
−0.94[1] R☉
Luminosity47.6±0.6[1] L☉
Temperature4,587+213
−101[1] K
Age2.91[3] Gyr
Other designations
78 Cnc, BD+28°1683, HD 77557, HIP 44512, HR 3601, SAO 80609[4]
Database references
SIMBADdata

78 Cancri is a star in the zodiac constellation of Cancer, located 548[1] light years from the Sun. It is too faint to be viewed with the naked eye, having an apparent visual magnitude of 7.19.[2] The star is moving away from the Earth with a relatively large radial velocity of +77.7 km/s.[1] It is an evolved giant star with a stellar classification of K3 III.[2]

References[]

  1. ^ a b c d e f g h i j k 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 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.
  3. ^ a b Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", The Astronomical Journal, 150 (3): 88, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114.
  4. ^ "78 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-11.
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