Editing Sextans (section)

=== Bright stars ===
* [[Alpha Sextantis]] is the brightest star in the constellation and the only star above the fifth [[apparent magnitude|magnitude]] with an apparent magnitude of 4.49. It is an ageing [[A-type star]] of spectral class A0 III<ref name = Cowley1969>{{cite journal | last1 = Cowley | first1 = A. | last2 = Cowley | first2 = C. | last3 = Jaschek | first3 = M. | last4 = Jaschek | first4 = C. | title = A study of the bright stars. I. A catalogue of spectral classifications. | journal = The Astronomical Journal | date = April 1969 | volume = 74 | page = 375 | issn = 0004-6256 | doi = 10.1086/110819 | s2cid = 121555804 | bibcode = 1969AJ.....74..375C | doi-access = free}}</ref> located 280{{±|20}} [[light-year]]s away<ref name=vanLeeuwen2007>{{citation | title=Validation of the new Hipparcos reduction | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}</ref> from the [[Solar System]]. At the age of 385 [[million years]],<ref name=Bowman>{{cite journal | doi=10.3847/1538-3881/acdee4 | doi-access=free | title=The Unexpected Optical and Ultraviolet Variability of the Standard Star α Sex (HD 87887) | date=2023 | last1=Monier | first1=Richard | last2=Bowman | first2=Dominic M. | last3=Lebreton | first3=Yveline | last4=Deal | first4=Morgan | journal=The Astronomical Journal | volume=166 | issue=2 | page=73 | arxiv=2306.08551 | bibcode=2023AJ....166...73M }}</ref> it is exhausting [[hydrogen]] at its core and leaving the [[main sequence]]. 
* [[Gamma Sextantis|γ Sextantis]] is the second brightest star in the constellation with an apparent magnitude of 5.05. It is a [[binary star]] consisting of two [[A-type main-sequence star]]s with classes of A1 V and A4 V respectively.<ref name=Edwards1976>{{citation | title=MK classification for visual binary components | last1=Edwards | first1=T. W. | journal=Astronomical Journal | postscript=. | volume=81 | pages=245–249 | date=April 1976 | doi=10.1086/111879 | bibcode=1976AJ.....81..245E }}</ref> The stars take 77.55 years to circle each other in an eccentric orbit<ref name=Heintz1982>{{citation | title=Orbits of 16 visual binaries | last1=Heintz | first1=W. D. | journal=Astronomy and Astrophysics Supplement Series | volume=47 | pages=569–573 | date=March 1982 | bibcode=1982A&AS...47..569H | postscript=. }}</ref> and the system is located 280{{±|10}} light-years away from the Solar System.<ref name=vanLeeuwen2007/> The separation of the stars is four-tenths of an [[arcsecond]],<ref name=Heintz1982/> making it difficult to observe without the use of a telescope with an aperture of 30&nbsp;cm.
* [[Beta Sextantis|β Sextantis]] is slightly fainter at magnitude 5.07;<ref name=Crawford1971>{{citation | display-authors=1 | last1=Crawford | first1=D. L. | last2=Barnes | first2=J. V. | last3=Golson | first3=J. C. | title=Four-color, H-beta, and UBV photometry for bright B-type stars in the northern hemisphere | journal=The Astronomical Journal | year=1971 | pages=1058 | volume=76 | bibcode=1971AJ.....76.1058C | doi=10.1086/111220 | postscript=. }}</ref> it is said to be 364{{±|10}} light-years distant.<ref name = GaiaDR2>{{Cite DR2|3782940437640705408}}</ref> Beta Sextantis is a [[B-type main-sequence star]] of spectral class B6 V and it has been used as a standard in the [[MK spectral classification]] system.<ref name=Mathys1986>{{citation | title=Photometric variability of some early-type stars | display-authors=1 | last1=Mathys | first1=G. | last2=Manfroid | first2=J. | last3=Renson | first3=P. | journal=Astronomy and Astrophysics Supplement Series | volume=63 | issue=3 | pages=403–416 | date=March 1986 | bibcode=1986A&AS...63..403M | postscript=. }}</ref> It is suspected to be a [[Alpha2 Canum Venaticorum variable|Alpha<sup>2</sup> Canum Venaticorum variable]] with a period of 15.4 [[days]].<ref name=Kholopov1989>{{citation | title=The 69th Name-List of Variable Stars | display-authors=1 | last1=Kholopov | first1=P. N. | last2=Samus | first2=N. N. | last3=Kazarovets | first3=B. V. | last4=Frolov | first4=M. S. | last5=Kireeva | first5=N. N. | journal=Information Bulletin on Variable Stars | issue=3323 | page=1 | date=April 1989 | volume=3323 | bibcode=1989IBVS.3323....1K | postscript=. }}</ref>