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

Léopold Gramaize, Adam C. Schneider, Federico Marocco, Jacqueline K. Faherty, Aaron M. Meisner, J. Davy Kirkpatrick, Mark Popinchalk, Austin Rothermich, Marc J. Kuchner, The Backyard Worlds, :, Planet 9 Collaboration

Submitted on 4 November 2022


We present the discovery of CWISE J151044.74524923.5, a wide low-mass companion to the nearby (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 1837 au from the central system.


Subjects: Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary Astrophysics