VY Pyxidis

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VY Pyxidis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pyxis
Right ascension 08h 54m 29.63102s[1]
Declination −23° 31′ 18.5775″[1]
Apparent magnitude (V) 7.13 - 7.40[2]
Characteristics
Evolutionary stage Type II Cepheid
Spectral type F4III[1]
Astrometry
Proper motion (μ) RA: 11.67 ± 0.33[3] mas/yr
Dec.: 29.33 ± 0.35[3] mas/yr
Parallax (π)5.01 ± 0.44[3] mas
Distance650 ± 60 ly
(200 ± 20 pc)
Other designations
VY Pyx, BD−22° 2440, HD 76296, HIP 43736, SAO 176679
Database references
SIMBADdata

VY Pyxidis is a BL Herculis variable (type II Cepheid) in the constellation of Pyxis.[1] It ranges between apparent magnitudes 7.13 and 7.40 over a period of 1.23995 days.[2] Located around 650 light-years distant, it shines with a luminosity approximately 45 times that of the Sun and has a surface temperature of 5892 K.[4]

References[]

  1. ^ a b c d "V* VY Pyx". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 July 2014.
  2. ^ a b Wils, Patrick (15 November 2011). "VY Pyxidis". AAVSO Website. American Association of Variable Star Observers. Retrieved 13 July 2014.
  3. ^ a b c van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
  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. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. S2CID 118665352.


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