Observation by Damian Peach: Sirius and Pup

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Damian Peach


2015 Mar 08 - 22:33


2015 May 09 - 09:23



  • ASI174


Target name



Sirius and Pup

About this image

We have recently received a couple of images of Sirius and it's small companion. This image was submitted by Damian Peach and was taken in Barbados using a C14 scope and ASI174 camera.  Sirius is a binary star system consisting of two white stars orbiting each other with a separation varying from 8 to 31 astronomical units and a period of 50.1 years. Sirius A, is a main sequence star of spectral type A1V and its companion, Sirius B, is a star that has already evolved off the main sequence and become a white dwarf. Currently 10,000 times less luminous in the visual spectrum, Sirius B was once the more massive of the two. The current angular separation is favourable for observations.

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