Kappa Telescopii

Kappa Telescopii (κ Telescopii) is a solitary,^[8] yellow-hued star in the southern constellation of Telescopium. With an apparent visual magnitude of +5.20,^[2] it is visible to the naked eye. Based upon an annual parallax shift of 12.00 mas as seen from Earth,^[1] it is located around 272 light years from the Sun.

Kappa Telescopii

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Telescopium
Right ascension	18h 52m 39.64405s[1]
Declination	−52° 06′ 26.5372″[1]
Apparent magnitude (V)	+5.20[2]
Characteristics
Evolutionary stage	red clump[3]
Spectral type	G8/K0 III[4]
B−V color index	+0.96[2]
Astrometry
Radial velocity (Rv)	−44.3[5] km/s
Proper motion (μ)	RA: +39.92[1] mas/yr Dec.: −96.17[1] mas/yr
Parallax (π)	12.00±0.27 mas[1]
Distance	272 ± 6 ly (83 ± 2 pc)
Absolute magnitude (MV)	+0.41±0.14[3]
Details[6]
Mass	1.92 M☉
Radius	10.51 R☉
Luminosity	77.6 L☉
Surface gravity (log g)	2.79 cgs
Temperature	4,968 K
Metallicity [Fe/H]	−0.25 dex
Rotational velocity (v sin i)	2.63 km/s
Age	1.25 Gyr
Other designations
κ Tel, CPD−52°11268, FK5 3499, HD 174295, HIP 92646, HR 7087, SAO 245772[7]
Database references
SIMBAD	data

At the age of around 1.25 billion years,^[6] this an evolved giant star with a stellar classification of G8/K0 III,^[4] showing a spectrum with characteristics intermediate between a G-type and a K-type star. It has an estimated 1.9 times the mass of the Sun and 10.5 times the Sun's radius.^[6] The star is radiating 77.6 times the solar luminosity from its photosphere at an effective temperature of 4,968 K.^[6] It is unclear whether it is cooling or heating up on its evolutionary pathway through the red clump.^[3]