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arxiv: 2211.02288 · v1 · pith:6PABP6D6 · submitted 2022-11-04 · astro-ph.SR · astro-ph.EP

Discovery of a Mid-L Dwarf Companion to the L 262-74 System

L\'eopold Gramaize , Adam C. Schneider , Federico Marocco , Jacqueline K. Faherty , Aaron M. Meisner , J. Davy Kirkpatrick , Mark Popinchalk , Austin Rothermich
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Marc J. Kuchner The Backyard Worlds: Planet 9 Collaboration
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classification astro-ph.SR astro-ph.EP
keywords systemcompaniondiscoverydwarfmid-lseparationangularassess
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We present the discovery of CWISE J151044.74$-$524923.5, a wide low-mass companion to the nearby ($\sim$24.7 pc) system L 262-74, which was identified through the Backyard Worlds: Planet 9 citizen science project. We detail the properties of the system, and we assess that this companion is a mid-L dwarf, which will need to be verified spectroscopically. With an angular separation of 74\farcs3, we estimate a projected physical separation of $\sim$1837 au from the central system.

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