AK Pyxidis

AK Pyxidis
Observation data; Epoch J2000 Equinox J2000
Constellation	Pyxis
Right ascension	08h 48m 14.62631s[1]
Declination	−28° 38′ 19.6757″[1]
Apparent magnitude (V)	6.09-6.51[2]
Characteristics
Spectral type	M5III [2]
Variable type	semiregular variable[2]
Astrometry
Proper motion (μ)	RA: -10.60 ± 0.29[1] mas/yr ; Dec.: −8.05 ± 0.29[1] mas/yr
Parallax (π)	4.68 ± 0.41[1] mas
Distance	700 ± 60 ly ; (210 ± 20 pc)
Details
Luminosity	1500[3] L☉
Temperature	3410 K[3] K
Other designations
	AK Pyxidis, CD−61° 1428, HD 75306, HIP 43215, SAO 176496.[4]
Database references
SIMBAD	data

AK Pyxidis is a semiregular variable star located in the constellation Pyxis. It varies between magnitudes 6.09 and 6.51,[2] pulsating to multiple periods simultaneously of 55.5, 57.9, 86.7, 162.9 and 232.6 days.[5] Located around 1228 light-years distant, it shines with a luminosity approximately 1500 times that of the Sun and has a surface temperature of 3410 K.[3]

References

van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357
Watson, Christopher (25 August 2009). "AK Pyxidis". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 29 July 2015.
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.
"V* AK Pyx". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 5 September 2015.
Tabur, V.; Bedding, T.R. (2009). "Long-term photometry and periods for 261 nearby pulsating M giants". Monthly Notices of the Royal Astronomical Society. 400 (4): 1945–61. arXiv:0908.3228. Bibcode:2009MNRAS.400.1945T. doi:10.1111/j.1365-2966.2009.15588.x.

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[vanLeeuwen2007-1] van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357

[AAVSOAK-2] Watson, Christopher (25 August 2009). "AK Pyxidis". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 29 July 2015.

[Mcdonald-3] 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.

[SIMBAD-4] "V* AK Pyx". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 5 September 2015.

[tabur-5] Tabur, V.; Bedding, T.R. (2009). "Long-term photometry and periods for 261 nearby pulsating M giants". Monthly Notices of the Royal Astronomical Society. 400 (4): 1945–61. arXiv:0908.3228. Bibcode:2009MNRAS.400.1945T. doi:10.1111/j.1365-2966.2009.15588.x.