VY Pyxidis

VY Pyxidis
	; A visual band light curve for VY Pyxidis, plotted from data published by Sanwal and Sarma (1991)[1]
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Pyxis
Right ascension	08h 54m 29.6305s[2]
Declination	−23° 31′ 18.575″[2]
Apparent magnitude (V)	7.13 - 7.40[3]
Characteristics
Spectral type	F3/5III[4]
Variable type	BL Her[3]
Astrometry
Proper motion (μ)	RA: 11.081[2] mas/yr ; Dec.: 29.509[2] mas/yr
Parallax (π)	3.9495 ± 0.0186 mas[2]
Distance	826 ± 4 ly ; (253 ± 1 pc)
Details
Mass	2.4[5] M☉
Radius	6.5[6] R☉
Luminosity	46[6] L☉
Surface gravity (log g)	2.987[5] cgs
Temperature	6,133[5] K
Metallicity [Fe/H]	−0.101[5] dex
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. It ranges between apparent magnitudes 7.13 and 7.40 over a period of 1.23995 days.[3] Located around 826 light-years distant, it shines with a luminosity approximately 46 times that of the Sun and has a surface temperature of 6,133 K

References

Sanwal, N. B.; Sarma, M. B. K. (June 1991). "BV 690, a new Bright Type II Cepheid". Journal of Astrophysics and Astronomy. 12: 119–131. doi:10.1007/BF02709301. Retrieved 1 March 2022.
Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. Gaia EDR3 record for this source at VizieR.
Wils, Patrick (15 November 2011). "VY Pyxidis". AAVSO Website. American Association of Variable Star Observers. Retrieved 13 July 2014.
Houk, N.; Smith-Moore, M. (1988), "Catalogue of two-dimensional spectral types for the HD stars, Vol.4", Michigan Spectral Survey, 4, Bibcode:1988MSS...C04....0H
Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardevol, J.; Casamiquela, L.; Figueras, F.; Jimenez-Arranz, O.; Jordi, C.; Monguio, M.; Romero-Gomez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "VizieR Online Data Catalog: StarHorse2, Gaia EDR3 photo-astrometric distances (Anders+, 2022)". Vizier Online Data Catalog. Bibcode:2022yCat.1354....0A.
Chandler, Colin Orion; et al. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. S2CID 119246448.

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[Sanwal-1] Sanwal, N. B.; Sarma, M. B. K. (June 1991). "BV 690, a new Bright Type II Cepheid". Journal of Astrophysics and Astronomy. 12: 119–131. doi:10.1007/BF02709301. Retrieved 1 March 2022.

[edr3-2] Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. Gaia EDR3 record for this source at VizieR.

[AAVSOVY-3] Wils, Patrick (15 November 2011). "VY Pyxidis". AAVSO Website. American Association of Variable Star Observers. Retrieved 13 July 2014.

[Houk1988-4] Houk, N.; Smith-Moore, M. (1988), "Catalogue of two-dimensional spectral types for the HD stars, Vol.4", Michigan Spectral Survey, 4, Bibcode:1988MSS...C04....0H

[starhorse2-5] Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardevol, J.; Casamiquela, L.; Figueras, F.; Jimenez-Arranz, O.; Jordi, C.; Monguio, M.; Romero-Gomez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "VizieR Online Data Catalog: StarHorse2, Gaia EDR3 photo-astrometric distances (Anders+, 2022)". Vizier Online Data Catalog. Bibcode:2022yCat.1354....0A.

[chandler2016-6] Chandler, Colin Orion; et al. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. S2CID 119246448.