What is Sigma Octantis?
'''Sigma Octantis''' is the current southern [[pole star]]. It is an F-type [[giant star]]. However, it is not as useful as the north pole star, [[Polaris]], as it is much dimmer. <ref>{{cite journal|url=http://adsabs.harvard.edu/abs/1975AJ.....80..637M|title=Study of the F-type stars. I. MK spectral types.|first=S.|last=Malaroda|date=1 August 1975|journal=The Astronomical Journal|volume=80|pages=637–641|via=NASA ADS|doi=10.1086/111786|bibcode=1975AJ.....80..637M}}</ref> It is 7,415 degrees Kelvin.<ref>{{cite journal|url=http://adsabs.harvard.edu/abs/2015ApJ...804..146D|title=The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets|first1=Trevor J.|last1=David|first2=Lynne A.|last2=Hillenbrand|date=1 May 2015|journal=The Astrophysical Journal|volume=804|issue=2|pages=146|via=NASA ADS|doi=10.1088/0004-637X/804/2/146|arxiv=1501.03154|bibcode=2015ApJ...804..146D|s2cid=33401607}}</ref> ==References== {{reflist}} [[Category:Southern pole stars]] {{sci-stub}} {{physics-stub}}