Xi Telescopii

ξ Telescopii
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Telescopium
Right ascension 20h 07m 23.2s[1]
Declination −52° 52' 51"[1]
Apparent magnitude (V) +4.89-4.94[2]
Distance1250 ± 350 ly
(380 ± 110 pc)
Spectral typeM2III[3]
Other designations
HR 7673, HD 190421,
CP−53 9794, FK5 755,
HIP 99120, SAO 246443,
GC 27879

Xi Telescopii (ξ Tel, ξ Telescopii) is a star in the constellation Telescopium.[1] A red giant of spectral type M2III,[3] it is classified as an irregular variable star and its brightness varies from magnitude +4.89 to +4.94.[2] Located around 1079 light-years distant, it shines with a luminosity approximately 2973 times that of the Sun and has a surface temperature of 4030 K.[4] It has a diameter around 5.6 times that of the Sun.[3]

References

  1. ↑ 1.0 1.1 1.2 "V* Ksi Telescopii -- Variable Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 2 July 2014.
  2. ↑ 2.0 2.1 Watson, Christopher (3 May 2013). "NSV 12783". AAVSO Website. American Association of Variable Star Observers. Retrieved 2 July 2014.
  3. ↑ 3.0 3.1 3.2 Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy & Astrophysics 367: 521–24. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.
  4. ↑ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society 427 (1): 343–57. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.