Kappa Telescopii

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
Spectral type G8/K0 III[3]
B−V color index +0.96[2]
Astrometry
Radial velocity (Rv)−44.3[4] 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]
Distance272 ± 6 ly
(83 ± 2 pc)
Absolute magnitude (MV)+0.41±0.14[5]
Details[6]
Mass1.92 M☉
Radius10.51 R☉
Luminosity77.6 L☉
Surface gravity (log g)2.79 cgs
Temperature4,968 K
Metallicity [Fe/H]−0.25 dex
Rotational velocity (v sin i)2.63 km/s
Age1.25 Gyr
Other designations
κ Tel, CPD−52° 11268, FK5 3499, HD 174295, HIP 92646, HR 7087, SAO 245772[7]
Database references
SIMBADdata

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.

At the age of around 1.25 billion years,[6] this an evolved giant star with a stellar classification of G8/K0 III,[3] 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.[5]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Corben1968 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Wielen1999 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference aaa458_2_609 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Jofre2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).