| Observation data EpochJ2000.0 EquinoxJ2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 20m 03.86070s[1] |
| Declination | +27° 13′ 03.7464″[1] |
| Apparent magnitude (V) | 5.14[2] |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F6V[3] |
| U−Bcolor index | –0.06[2] |
| B−Vcolor index | +0.47[2] |
| Astrometry | |
| Radial velocity (Rv) | +32.91±0.08[4] km/s |
| Proper motion (μ) | RA: –17.433[1]mas/yr Dec.: –377.614[1]mas/yr |
| Parallax (π) | 54.8640±0.1728 mas[1] |
| Distance | 59.4 ± 0.2 ly (18.23 ± 0.06 pc) |
| Absolute magnitude (MV) | 3.85[5] |
| Details[3] | |
| Mass | 1.070 M☉ |
| Radius | 1.3870±0.0276 R☉ |
| Luminosity | 2.4378±0.0341 L☉ |
| Surface gravity (log g) | 4.35[5] cgs |
| Temperature | 6,130±58 K |
| Metallicity [Fe/H] | −0.26 dex |
| Rotational velocity (v sin i) | 4.2[5] km/s |
| Age | 5.8 Gyr |
| Other designations | |
| χ Cnc,18 Cancri,BD+27°1589,FK5 1217,GJ 303,HD 69897,HIP 40843,HR 3262,SAO 80104[6] | |
| Database references | |
| SIMBAD | data |
Chi Cancri,Latinized from χ Cancri, is a candidateastrometric binary[7]star system in the northernzodiacconstellation ofCancer. It has a yellow-white hue and is dimly visible to the naked eye with anapparent visual magnitude of 5.14.[2] The system is located at a distance of 59 light years from the Sun, based onparallax, and is drifting further away with aradial velocity of +33 km/s.[4] It is estimated to have made its closest approach some 274,000 years ago when it came to within 42 light-years.[8]
The visible component of this system is anF-type main-sequence star with astellar classification of F6V,[3] where theluminosity class of 'V' indicates it is generating energy throughcorehydrogen fusion. The star is 5.8[3] billion years old and is spinning with aprojected rotational velocity of just 4.2 km/s.[5] It has about the samemass as the Sun but 1.4 times theSun's radius. Chi Cancri is radiating 2.4 times theluminosity of the Sun from itsphotosphere at aneffective temperature of 6,130 K.[3] It displays aninfrared excess in the 18μmwavelength band, suggesting acircumstellar disk of dusty debris is orbiting the star.[9]
{{cite web}}: CS1 maint: postscript (link)