| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | 09h 04m 09.86704s[1] |
| Declination | +27° 53′ 53.9089″[1] |
| Apparent magnitude (V) | 6.665[2] |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A1V[3] |
| U−B color index | +0.05[4] |
| B−V color index | +0.00[4] |
| Astrometry | |
| Radial velocity (Rv) | −21.0±4.4[5] km/s |
| Proper motion (μ) | RA: −1.287[1] mas/yr Dec.: −1.429[1] mas/yr |
| Parallax (π) | 5.6109 ± 0.1390 mas[1] |
| Distance | 580 ± 10 ly (178 ± 4 pc) |
| Absolute magnitude (MV) | 0.24[6] |
| Details | |
| Radius | 2.7[7] R☉ |
| Luminosity | 75.57[6] L☉ |
| Temperature | 8,887+352 −376[1] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
70 Cancri is a star in the zodiac constellation of Cancer, located around 580 light years from the Sun.[1] It is a challenge to view with the naked eye even under good seeing conditions, having an apparent visual magnitude of 6.7.[2] The star is moving closer to the Earth with a heliocentric radial velocity of -21 km/s,[5] and is expected to come to within 44 light-years in around nine million years.[6] It is an A-type main-sequence star[3] with a stellar classification of A1V.[3] The object has a radius of about 2.7 R☉[7] and is radiating 76[6] times the Sun's luminosity from its photosphere at an effective temperature of 8,887 K.[1]
GaiaDR2 was invoked but never defined (see the help page).TYC2 was invoked but never defined (see the help page).Cowley was invoked but never defined (see the help page).UBV was invoked but never defined (see the help page).RV was invoked but never defined (see the help page).Anderson2012 was invoked but never defined (see the help page).CADARS was invoked but never defined (see the help page).SIMBAD was invoked but never defined (see the help page).