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]
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 |