Nu Chamaeleontis

ν Chamaeleontis, Latinized as Nu Chamaeleontis, is a single^[7] star in the southern circumpolar constellation of Chamaeleon. It is a yellow-hued star, dimly visible to the naked eye, with an apparent visual magnitude of 5.43.^[2] This object is located at a distance of 189 light-years from the Sun, based on its parallax,^[1] and is drifting further away with a radial velocity of +11 km/s.^[5] It has an absolute magnitude of 1.59.^[2]

Nu Chamaeleontis

Observation data Epoch J2000      Equinox J2000
Constellation	Chamaeleon
Right ascension	09h 46m 20.63010s[1]
Declination	−76° 46′ 34.0259″[1]
Apparent magnitude (V)	5.43[2]
Characteristics
Spectral type	G8III[3]
U−B color index	+0.57[4]
B−V color index	+0.89[4]
Astrometry
Radial velocity (Rv)	11.18±0.14[5] km/s
Proper motion (μ)	RA: +83.279[1] mas/yr Dec.: −56.443[1] mas/yr
Parallax (π)	17.2608±0.0763 mas[1]
Distance	189.0 ± 0.8 ly (57.9 ± 0.3 pc)
Absolute magnitude (MV)	1.59[2]
Details
Mass	1.64±0.20[2] M☉
Radius	6.50+0.08 −0.10[1] R☉
Luminosity	23.9±0.1[1] L☉
Surface gravity (log g)	+3.07±0.15[2] cgs
Temperature	5008+39 −30[1] K
Rotational velocity (v sin i)	1.2±1.0[5] km/s
Other designations
CPD−76°598, FK5 2784, HD 85396, HIP 47956, HR 3902, SAO 256658[6]
Database references
SIMBAD	data

This object is an aging G-type giant star with a stellar classification of G8III.^[3] Having exhausted the supply of hydrogen at its core, it has expanded and cooled off the main sequence; at present it has 6.5^[1] times the girth of the Sun. The star has 1.6^[2] times the mass of the Sun and is radiating 24^[1] times the Sun's luminosity from its swollen photosphere at an effective temperature of 5008 K.^[1] These coordinates are a source for X-ray emission, which is most likely (99.3% chance) coming from the star.^[8]