Chi Cancri

Chi Cancri

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Cancer
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	5.14
Characteristics
Evolutionary stage	main sequence
Spectral type	F6V
U−B Template:Engvar	–0.06
B−V Template:Engvar	+0.47
Astrometry
Radial velocity (Rv)	km/s
Proper motion (μ)	RA: –17.433 mas/yr Dec.: –377.614 mas/yr
Parallax (π)	54.8640±0.1728 mas
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	3.85
Details
Mass	1.070 Template:Solar mass
Radius	Template:Solar radius
Luminosity	Template:Solar luminosity
Surface gravity (log g)	4.35 cgs
Temperature	K
Metallicity [Fe/H]	−0.26 dex
Rotational velocity (v sin i)	4.2 km/s
Age	5.8 Gyr
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
Template:Odlist
Database references
SIMBAD	data

Chi Cancri, Latinized from χ Cancri, is a candidate astrometric binary star system in the northern zodiac constellation of Cancer. It has a yellow-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.14. The system is located at a distance of 59 light years from the Sun, based on parallax, and is drifting further away with a radial velocity of +33 km/s. It is estimated to have made its closest approach some 274,000 years ago when it came to within .

The visible component of this system is an F-type main-sequence star with a stellar classification of F6V, where the luminosity class of 'V' indicates it is generating energy through core hydrogen fusion. The star is 5.8 billion years old and is spinning with a projected rotational velocity of just 4.2 km/s. It has about the same mass as the Sun but 1.4 times the Sun's radius. Chi Cancri is radiating 2.4 times the luminosity of the Sun from its photosphere at an effective temperature of 6,130 K. It displays an infrared excess in the 18μm wavelength band, suggesting a circumstellar disk of dusty debris is orbiting the star.