35 Cancri
Star in the constellation Cancer
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35 Cancri is a star in the zodiac constellation of Cancer, located 630 light years from the Sun. It is a challenge to view with the naked eye even under good seeing conditions, having an apparent visual magnitude of +6.55.[2] The star is moving further from the Earth with a heliocentric radial velocity of +35 km/s,[2] and is a member of the Beehive Cluster.[8]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 35m 19.44616s[1] |
| Declination | +19° 35′ 24.2308″[1] |
| Apparent magnitude (V) | +6.55[2] |
| Characteristics | |
| Evolutionary stage | subgiant[3] |
| Spectral type | G0 III[4] |
| B−V color index | +0.681±0.013[2] |
| Astrometry | |
| Radial velocity (Rv) | +34.9±1.2[2] km/s |
| Proper motion (μ) | RA: −34.582[1] mas/yr Dec.: −12.417[1] mas/yr |
| Parallax (π) | 5.1788±0.0588 mas[1] |
| Distance | 630 ± 7 ly (193 ± 2 pc) |
| Absolute magnitude (MV) | 0.22[2] |
| Details | |
| Mass | 1.072[5] M☉ |
| Radius | 0.981[5] R☉ |
| Luminosity | 77.23[2] L☉ |
| Temperature | 5,950[6] K |
| Rotation | 0.501 d[5] |
| Rotational velocity (v sin i) | 99.0[5] km/s |
| Other designations | |
| 35 Cnc, BD+20°2118, GC 11904, HD 72779, HIP 42133, HR 3387, SAO 97928[7] | |
| Database references | |
| SIMBAD | data |
This is a subgiant star[3] with a stellar classification of G0 III.[4] It is rotating at a relatively fast clip, giving it an oblate shape with an equatorial bulge that is 5% larger than the polar radius.[9] 35 Cancri has a projected rotational velocity of 99 km/s[5] and a rotation period of 0.5 days.[5] This rotation is expected to decrease significantly as the star expands into a giant.[4] It has nearly the same mass and size as the Sun,[5] but is radiating 77[2] times the Sun's luminosity from its photosphere at an effective temperature of 5,950 K.[6]