| 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 mas [1] |
| 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
- ^ 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.
- ^ 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.
- ^ 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.
- ^ "78 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-11.
| 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 mas [1] |
| 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
- ^ 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.
- ^ 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.
- ^ 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.
- ^ "78 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-11.