| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 38m 05.17248s[1] |
| Declination | +09° 34′ 28.6006″[1] |
| Apparent magnitude (V) | 6.542[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A1 V[4][5] |
| B−V color index | −0.010±0.006[6] |
| Astrometry | |
| Radial velocity (Rv) | +22.1±2.2[6] km/s |
| Proper motion (μ) | RA: −28.271[1] mas/yr Dec.: −4.237[1] mas/yr |
| Parallax (π) | 6.5093 ± 0.0735 mas[1] |
| Distance | 501 ± 6 ly (154 ± 2 pc) |
| Absolute magnitude (MV) | 1.30[6] |
| Details | |
| Mass | 2.66±0.05[3] M☉ |
| Radius | 1.8[7] R☉ |
| Luminosity | 30.9+3.0 −2.7[2] L☉ |
| Surface gravity (log g) | 4.30[2] cgs |
| Temperature | 9,830[2] K |
| Metallicity [Fe/H] | −0.21±0.13[2] dex |
| Rotational velocity (v sin i) | 35.2±1.1[2] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
37 Cancri is a star in the zodiac constellation of Cancer. It is a challenge to view with the naked eye, having an apparent magnitude of 6.54.[2] The star is moving away from the Earth with a heliocentric radial velocity of +22 km/s, having come as close as 246 light-years some 2.7 million years ago.[6]
This is an ordinary A-type main-sequence star with a stellar classification of A1 V,[4] which indicates it is generating energy through hydrogen fusion at its core. It is spinning with a projected rotational velocity of 35 km/s.[2] The star has 2.7[3] times the mass of the Sun and around 1.8[7] times the Sun's radius. It is radiating 31 times the luminosity of the Sun from its photosphere at an effective temperature of 9,830 K.[2]
GaiaDR2 was invoked but never defined (see the help page).Royer2014 was invoked but never defined (see the help page).zorec2012 was invoked but never defined (see the help page).Cowley1969 was invoked but never defined (see the help page).SIMBAD was invoked but never defined (see the help page).Anderson2012 was invoked but never defined (see the help page).Fracassini2001 was invoked but never defined (see the help page).