AK Pyxidis
{{Short description|Star in the constellation Pyxis}}
{{Starbox begin
| name = AK Pyxidis
}}
{{Starbox image
| image = 250px
| caption = A visual band light curve for AK Pyxidis, plotted from data published by Tabur et al. (2009)
}}
{{Starbox observe
| epoch=J2000
| constell=Pyxis
}}
{{Starbox character
| b-v=
| u-b=
| variable= semiregular variable
}}
{{Starbox astrometry
| radial_v=
| parallax= 4.68
| p_error=0.41
| absmag_v=
}}
{{Starbox detail
| mass=
| radius=
| metal_fe=
| gravity=
| rotational_velocity=
| age_gyr=
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{{Starbox catalog
| names= AK Pyxidis, CD−61° 1428, HD 75306, HIP 43215, SAO 176496.
}}
{{Starbox reference
| Simbad = AK+Pyx
}}
{{Starbox end}}
AK Pyxidis is a semiregular variable star located in the constellation Pyxis. It varies between magnitudes 6.09 and 6.51, making it very faintly visible to the naked eye under excellent dark sky conditions. It has been found to pulsate with periods of 55.5, 57.9, 86.7, 162.9 and 232.6 days simultaneously. 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.
The variability of AK Pyxidis was discovered during the analysis of the Hipparcos satellite data. It was given the variable star designation AK Pyxidis in 1999.
References
{{reflist|refs=
| url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=27245
| title=AK Pyxidis
| author=Watson, Christopher
| date=25 August 2009 | work=The International Variable Star Index
| publisher=American Association of Variable Star Observers
| accessdate=29 July 2015}}
| first=F. | last=van Leeuwen | title=Validation of the new Hipparcos reduction
| journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=November 2007
| bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | arxiv=0708.1752| s2cid=18759600 }}
| title=Long-term photometry and periods for 261 nearby pulsating M giants
| last1=Tabur | first1 =V. | last2=Bedding | first2=T.R. | author2-link= Tim Bedding
| date=2009 | journal=Monthly Notices of the Royal Astronomical Society
| volume= 400 | issue =4 | pages= 1945–61 | doi=10.1111/j.1365-2966.2009.15588.x
| doi-access=free |arxiv = 0908.3228 | bibcode = 2009MNRAS.400.1945T | s2cid=15358380 }}
| author=McDonald, I. | author2=Zijlstra, A. A. | author3=Boyer, M. L. | date=2012
| title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars
| journal=Monthly Notices of the Royal Astronomical Society | volume=427 | issue=1 | pages=343–57
| bibcode=2012MNRAS.427..343M|arxiv = 1208.2037 | doi = 10.1111/j.1365-2966.2012.21873.x
| doi-access=free | s2cid=118665352}}
| title=V* AK Pyx
| accessdate=5 September 2015
}}
| last1=Kazarovets | first1=E. V. | last2=Samus | first2=N. N. | last3=Durlevich | first3=O. V.
| last4=Frolov | first4=M. S. | last5=Antipin | first5=S. V. | last6=Kireeva | first6=N. N.
| last7=Pastukhova | first7=E. N.
| title=The 74th Special Name-list of Variable Stars | journal=Information Bulletin on Variable Stars
| date=January 1999 | volume=4659 | page=1 | bibcode=1999IBVS.4659....1K
| url=https://ibvs.konkoly.hu/pub/ibvs/4601/4659.pdf | access-date=8 October 2024}}
}}
{{Stars of Pyxis}}
{{DEFAULTSORT:AK Pyxidis}}
Category:Semiregular variable stars
Category:Durchmusterung objects
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