39 Cancri
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 6.39[2] |
| Characteristics | |
| Spectral type | G8+ III-IIIb[3] |
| B−V Template:Engvar | 0.98[2] |
| Astrometry | |
| Radial velocity (Rv) | 33.88[2] km/s |
| Proper motion (μ) | RA: −35.610[1] mas/yr Dec.: −11.964[1] mas/yr |
| Parallax (π) | 5.3162±0.0589 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Details | |
| Mass | 2.88[2] Template:Solar mass |
| Radius | 12[4] Template:Solar radius |
| Luminosity | 105[2] Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val".[5] cgs |
| Temperature | Script error: No such module "val".[2] K |
| Metallicity [Fe/H] | Script error: No such module "val".[5] dex |
| Age | 460[2] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[6] | |
| Database references | |
| SIMBAD | data |
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39 Cancri is a star in the constellation Cancer, located about 614 light years from the Sun in the Beehive Cluster (NGC 2632). It is a challenge to see with the naked eye, having an apparent visual magnitude of 6.39.[2] This object is moving further from the Earth with a heliocentric radial velocity of 34 km/s.[2]
This is an evolved giant star with a stellar classification of G8+ III-IIIb,[3] indicating it has consumed the hydrogen at its core. It is 460[2] million years old with 2.88[2] times the mass of the Sun and about 12[4] times the Sun's radius. The star is radiating 105[2] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,954 K.[2]
References
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