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

Sigma Octantis Media

A light curve for Sigma Octantis, plotted from TESS data
The south celestial pole. The trapezoidal asterism at the centre includes Sigma Octantis.

References

↑ Malaroda, S.. Study of the F-type stars. I. MK spectral types.. The Astronomical Journal 80 (1 August 1975). p. 637–641. doi:10.1086/111786.
↑ David, Trevor J.. 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) (1 May 2015). p. 146. doi:10.1088/0004-637X/804/2/146.

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[1] Malaroda, S.. Study of the F-type stars. I. MK spectral types.. The Astronomical Journal 80 (1 August 1975). p. 637–641. doi:10.1086/111786.

[2] David, Trevor J.. 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) (1 May 2015). p. 146. doi:10.1088/0004-637X/804/2/146.

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