Sirius proper motion in 13 years
Taken by Peter Rosén on March 7, 2024 @
Central Stockholm, Sweden
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Details:
I have been chasing Sirius B, the elusive little companion to Sirius A since 2011
From Stockholm where I live, the duo never gets any higher than 14° above the rooftops. I finally succeeded in 2018 when we happened to have exceptional conditions and the result was published here on Spaceweather.
I have continued every winter and got my latest image some days ago.
When I registered and blinked it with an image taken in 2011 I noticed that Sirius A had a very strong proper motion while all the other stars had not moved. Measuring from the images I got a result of approximately 19 arc seconds, slightly higher than the value of 17,3 arc seconds that I found from googling.
The second image shows Sirius B in my image from 2018.
/*Peter R
Photographer's website:
No URL provided.
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