Sigma Capricorni

Sigma Capricorni

Template:Location mark Location of σ Capricorni (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Capricornus
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	+5.31
Characteristics
Spectral type	K2 III
U−B Template:Engvar	+1.56
B−V Template:Engvar	+1.43
Astrometry
Radial velocity (Rv)	km/s
Proper motion (μ)	RA: +8.07 mas/yr Dec.: −11.31 mas/yr
Parallax (π)	3.0609±0.1194 mas
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	−2.38
Details
Mass	Template:Solar mass
Radius	Template:Solar radius
Luminosity	Template:Solar luminosity
Temperature	K
Age	Myr
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
Template:Odlist
Database references
SIMBAD	data

Sigma Capricorni, Latinized from σ Capricorni, is a solitary star in the southern constellation of Capricornus, 0.5 degree north of the ecliptic. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of +5.31. The star is about 1,070 light years away from the Sun based on parallax, but is drifting closer with a radial velocity of −9.6 km/s.

This object is an evolved, K-type giant star with a stellar classification of K2 III. Having exhausted the supply of hydrogen at its core, it has expanded and now has around 67.5 times the girth of the Sun. The star is about 60.5 million years old with 6.3 times the mass of the Sun. It is radiating 1,392 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,292 K.

A magnitude 9.43 visual companion is at an angular separation of along a position angle of 179°, as of 2016.