Astronomy:78 Cancri
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Short description: Star in the constellation Cancer
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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 |
| Distance | 548 ± 5 ly (168 ± 2 pc) |
| Absolute magnitude (MV) | 0.56[2] |
| Details | |
| Mass | 1.62[3] M☉ |
| Radius | 10.92+0.50 −0.94[1] R☉ |
| Luminosity | 47.6±0.6[1] L☉ |
| Temperature | 4,587+213 −101[1] K |
| Age | 2.91[3] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", The Astronomical Journal 150 (3): 88, doi:10.1088/0004-6256/150/3/88, Bibcode: 2015AJ....150...88L.
- ↑ "78 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=78+Cnc.
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