Sigma Octantis

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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. [1] It is 7,415 degrees Kelvin.[2]

References[change | change source]

  1. Malaroda, S. (1 August 1975). "Study of the F-type stars. I. MK spectral types". The Astronomical Journal. 80: 637–641. Bibcode:1975AJ.....80..637M. doi:10.1086/111786 – via NASA ADS.
  2. David, Trevor J.; Hillenbrand, Lynne A. (1 May 2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. S2CID 33401607 – via NASA ADS.