60 Cancri
Orange-hued giant star in the constellation Cancer
From Wikipedia, the free encyclopedia
60 Cancri is a star in the zodiac constellation Cancer, located about 850 light-years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of +5.44.[2] 60 Cancri is situated near the ecliptic, so it is subject to the occasional occultation by the Moon.[8] It is moving away from the Earth with a heliocentric radial velocity of +25 km/s.[1]
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 55m 55.54693s[1] |
| Declination | +11° 37′ 33.6990″[1] |
| Apparent magnitude (V) | +5.44[2] |
| Characteristics | |
| Evolutionary stage | giant |
| Spectral type | K5 III[3][2][4] |
| B−V color index | 1.462±0.004[2] |
| Astrometry | |
| Radial velocity (Rv) | +25.38±0.16[1] km/s |
| Proper motion (μ) | RA: −15.443[1] mas/yr Dec.: −13.539[1] mas/yr |
| Parallax (π) | 3.8596±0.1340 mas[1] |
| Distance | 850 ± 30 ly (259 ± 9 pc) |
| Details | |
| Mass | 1.42±0.45[5] M☉ |
| Radius | 63[6] R☉ |
| Luminosity | 1,023[6] L☉ |
| Surface gravity (log g) | 1.28±0.11[5] cgs |
| Temperature | 4,150±92[5] K |
| Metallicity [Fe/H] | −0.01±0.05[5] dex |
| Rotational velocity (v sin i) | 8.75[7] km/s |
| Age | 1.15+0.67 −0.43[5] Gyr |
| Other designations | |
| 60 Cnc, NSV 4308, BD+12°1941, GC 12339, HD 76351, HIP 43851, HR 3550, SAO 98235[4] | |
| Database references | |
| SIMBAD | data |
This is an aging giant star with a stellar classification of K5 III,[3] indicating it has exhausted the hydrogen at its core and evolved off the main sequence. It is a suspected variable star of unknown type.[9] The interferometry-measured angular diameter of the primary component, after correcting for limb darkening, is 1.94±0.02 mas,[10] which, at its estimated distance, equates to a physical radius of about 54 times the radius of the Sun.[11] It is around 1.15 billion years old with 1.4 times the mass of the Sun.[5] The star is radiating just over a thousand times the Sun's luminosity[6] from its enlarged photosphere at an effective temperature of 4,150 K.[5]
