VY Pyxidis

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
Distance	650 ± 60 ly ; (200 ± 20 pc)
Other designations
	VY Pyx, BD−22° 2440, HD 76296, HIP 43736, SAO 176679
Database references
SIMBAD	data

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

"V* VY Pyx". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 July 2014.
Wils, Patrick (15 November 2011). "VY Pyxidis". AAVSO Website. American Association of Variable Star Observers. Retrieved 13 July 2014.
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.
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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[SIMBAD-1] "V* VY Pyx". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 July 2014.

[AAVSOVY-2] Wils, Patrick (15 November 2011). "VY Pyxidis". AAVSO Website. American Association of Variable Star Observers. Retrieved 13 July 2014.

[vanLeeuwen2007-3] 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.

[Mcdonald-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.