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The Solar Neighbourhood XI: The trigonometric parallax of SCR 1845--6357

Niall R. Deacon·Nigel C. Hambly·Todd J. Henry·John P. Subasavage·Misty A. Brown·Wei-Chun Jao
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Abstract

We present a trigonometric parallax for the nearby star SCR1845--6357, an extremely red high proper motion object discovered by Hambly et al. (2004) and identified via accurate photoelectric photometry and spectroscopy to be an M8.5 dwarf with a photometric parallax of $4.6\pm0.8$ pc by Henry et al. (2004). Using methods similar to those described in Deacon & Hambly (2001) we have derived a full astrometric solution from SuperCOSMOS scans of eight survey and non--survey Schmidt photographs held in the United Kingdom Schmidt Telescope Unit plate library. We calculate the trigonometric parallax to be $π=282\pm23$ mas yielding a distance of $3.5\pm0.3$ pc which implies an absolute K$_{s}$ magnitude of 10.79. This distance calculation places SCR1845--6357 as the 16th closest stellar system to the Sun.

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Niall R. Deacon, Nigel C. Hambly, Todd J. Henry, John P. Subasavage, Misty A. Brown, Wei-Chun Jao. 2004-09-24. The Solar Neighbourhood XI: The trigonometric parallax of SCR 1845--6357. https://doi.org/10.1086/426330

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