Alpha Chamaeleontis

α Chamaeleontis

Template:Location mark Location of α Chamaeleontis (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Chamaeleon
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	4.06
Characteristics
Spectral type	F5 V Fe-0.8
U−B Template:Engvar	−0.04
B−V Template:Engvar	+0.40
Astrometry
Radial velocity (Rv)	km/s
Proper motion (μ)	RA: 111.12 mas/yr Dec.: 107.49 mas/yr
Parallax (π)	51.12±0.12 mas
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	+2.59
Details
Mass	1.42 Template:Solar mass
Radius	Template:Solar radius
Luminosity	Template:Solar luminosity
Surface gravity (log g)	cgs
Temperature	K
Metallicity [Fe/H]	−0.26 dex
Rotational velocity (v sin i)	0 km/s
Age	1.8 Gyr
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
Template:Odlist
Database references
SIMBAD	data

Alpha Chamaeleontis, Latinized from α Chamaeleontis, is a solitary star in the southern circumpolar constellation of Chamaeleon. It has an apparent visual magnitude of 4.06 and thus is bright enough to be seen with the naked eye. With an annual parallax shift of 51.12 mas, it is located 63.8 light years from the Sun. The star is drifting closer with a radial velocity of −13 km/s, and is predicted to come to within in 666,000 years.

This is an F-type main sequence star with a stellar classification of F5 V Fe−0.8, where the 'Fe−0.8' notation indicates an anomalously low abundance of iron. It has an estimated 1.4 times the mass of the Sun, 2.1 times the Sun's radius, and radiates 7.5 times the solar luminosity from its outer atmosphere at an effective temperature of 6,580 K. The star is around 1.8 billion years old with a projected rotational velocity that is too low to be measured. The star has been examined for an infrared excess that would suggest the presence of an orbiting debris disk, but none was found.