Draft:Sirius C
A hypothetical brown dwarf in the Sirius Star System
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Sirius C[1]is a hypothetical brown dwarf[1] of the Sirius star system. The existence of Sirius C[1][2] has been suggested based on certain astrometric observations; however, subsequent studies have not confirmed its presence, and it remains a hypothetical object.
{{Infobox star system
| name = Sirius C
| image = <!-- optional image file name -->
| caption = Hypothetical third member of the Sirius system
| type = Brown dwarf (hypothetical)
| distance = 8.6 ly
| constellation = Canis Major
| discovered = Unconfirmed
| status = Disputed
}}
Submission declined on 5 June 2025 by Sophisticatedevening (talk).
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Proposed Existence
Early Observations
In 1995, astronomers Daniel Benest[3][2] and J.L. Duvent[3][2] published a study suggesting the presence of a third body in the Sirius system. Their analysis of astrometric data indicated potential perturbations in the orbit of Sirius A, which they attributed to a possible companion with a mass less than 0.05 solar masses, possibly a red or brown dwarf.
Infared Imaging Studies
Subsequent observations aimed to detect Sirius C directly. A notable study in 2011 utilized high-contrast imaging with the Subaru Telescope and the MMT Observatory to search for companions in the Sirius system. These observations were sensitive enough to detect objects with masses down to a few Jupiter masses at certain orbital separations. The study found no evidence of a third companion, effectively ruling out the existence of Sirius C as proposed by earlier astrometric analyses .
Cultural References
The concept of Sirius C has also appeared in various cultural and pseudoscientific contexts. For instance, some interpretations of the Dogon people’s astronomical knowledge suggest awareness of a third star in the Sirius system. These claims have been widely debated and are considered speculative by the scientific community.
Current Status
As of now, there is no observational evidence supporting the existence of Sirius C. The initial astrometric anomalies that led to its proposal have not been substantiated by direct imaging or other detection methods. Therefore, Sirius remains classified as a binary star system.
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