T Vulpeculae

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T Vulpeculae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Vulpecula
Right ascension 20h 51m 28.23877 s [1]
Declination 28° 15′ 01.8302 ″ [1]
Spectral type F2/F3II+B6.0 [1]

T Vulpeculae is a star in the constellation Vulpecula. A Cepheid variable, its apparent magnitude ranges from 5.41 to 6.09 over 4.4 days.[2] It is a yellow-white supergiant of spectral type F5Ib-G0Ib.[2] A binary, it has a 2.1 solar-mass companion that is a white main sequence star of spectral type A0V.[3]


  1. ^ a b c "T Vulpeculae". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 24 January 2014. 
  2. ^ a b BSJ (4 January 2010). "T Vulpeculae". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 January 2014. 
  3. ^ Evans, Nancy Remage; Bond, Howard E.; Schaefer, Gail H.; Mason, Brian D.; Karovska, Margarita; Tingle, Evan (2013). "Binary Cepheids: Separations and Mass Ratios in 5M ⊙ Binaries". Astronomical Journal 46 (4): 93, 10 pp.