Delta Crateris

δ Crateris

Template:Location mark Location of δ Crateris (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Crater
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	3.56
Characteristics
Evolutionary stage	red clump
Spectral type	K0 III
B−V Template:Engvar	1.12
Astrometry
Radial velocity (Rv)	km/s
Proper motion (μ)	RA: −122.958 mas/yr Dec.: +207.083 mas/yr
Parallax (π)	17.017±0.1617 mas
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	−0.321
Details
Mass	1.47 ± 0.2 Template:Solar mass
Radius	Template:Solar radius
Luminosity	Template:Solar luminosity
Surface gravity (log g)	2.00 ± 0.08 cgs
Temperature	4,540 ± 40 K
Metallicity [Fe/H]	dex
Age	2.89 Gyr
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
δ Crt, 12 Crateris, BD−13°3345, FK5 426, HD 98430, HIP 55282, HR 4382, SAO 156605.
Database references
SIMBAD	data

Delta Crateris (δ Crt, δ Crateris) is a solitary star in the southern constellation of Crater. With an apparent visual magnitude of 3.56, it is the brightest star in this rather dim constellation. It has an annual parallax shift of as measured from Earth, indicating Delta Crateris lies at a distance of from the Sun.

Characteristics

This is an evolved orange-hued giant star belonging to the spectral class K0 III. Delta Crateris is a member of the so-called red clump, indicating that it is generating energy through the thermonuclear fusion of helium at its core. The star has an estimated 1.47 times the mass of the Sun but has expanded to 20 times the Sun's radius.

It is around 2.89 billion years old with a rotation rate that is too small to measure; the projected rotational velocity is 0.0 km/s. Delta Crateris is radiating as much luminosity as the Sun from its outer envelope at an effective temperature of  K.