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Nicholson, M. (2009). The discovery of a new triple star system (MLR 647). PHILICA.COM Article number 167.

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The discovery of a new triple star system (MLR 647)

Martin Nicholsonconfirmed user (Independent Researcher)

Published in astro.philica.com

Abstract
The new discovery of a common proper-motion companion to the known binary star system MLR 647 means that it is a triple system.

Article body

 The discovery of a new triple star system (MLR 647)

The newly released Third U.S. Naval Observatory CCD Astrograph Catalog (UCAC3) offers amateur and professional astronomers alike the opportunity to search for previously unreported binary star systems.

An example of what can be extracted from the mass of information available via the Vizier site (http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=I/315) is presented in this article.    

MLR 647 (the primary star) is already listed in the Washington Visual Double Star Catalog as having two components at 0.2 arc second separation and at a position angle of 52 degrees when last measured in 1983. The new discovery of a common proper-motion companion at a distance of 26.8 arc seconds means that MLR 647 is at least a triple system.

Acknowledgement 

This discovery made use of UCAC3 results (Zacharias et al. 2009).




 

Information about this Article
Peer-review ratings (from 1 review, where a score of 100 represents the ‘average’ level):
Originality = 156.25, importance = 225.00, overall quality = 225.00
This Article was published on 20th September, 2009 at 10:51:37 and has been viewed 5637 times.

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This work is licensed under a Creative Commons Attribution 2.5 License.
The full citation for this Article is:
Nicholson, M. (2009). The discovery of a new triple star system (MLR 647). PHILICA.COM Article number 167.


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1 Peer review [reviewer #10906confirmed user] added 10th November, 2009 at 04:18:41

Certainly sounds plausible. The conclusion would be that MLR 647 APPEARED to have a third companion, based on the close match in RA, Dec, and proper motions.

One issue could be that some apparent multiple star systems would not actually be related, but had the close matches just by chance. Without knowing more, I can’t estimate the expected number of apparent systems produced by chance. Data mining would find them, along with all the systems that were actually related.

—-David Hobby

Originality: 5, Importance: 6, Overall quality: 6




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