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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]