%ASchneider, Adam%AMeisner, Aaron%AGagné, Jonathan%AFaherty, Jacqueline%AMarocco, Federico%ABurgasser, Adam%AKirkpatrick, J.%AKuchner, Marc%AGramaize, Léopold%ARothermich, Austin%ABrooks, Hunter%AVrba, Frederick%ABardalez Gagliuffi, Daniella%ACaselden, Dan%ACushing, Michael%AGelino, Christopher%ALine, Michael%ACasewell, Sarah%ADebes, John%AAganze, Christian%AAyala, Andrew%AGerasimov, Roman%AGonzales, Eileen%AHsu, Chih-Chun%AKiman, Rocio%APopinchalk, Mark%ATheissen, Christopher%BJournal Name: The Astrophysical Journal; Journal Volume: 921; Journal Issue: 2 %D2021%I %JJournal Name: The Astrophysical Journal; Journal Volume: 921; Journal Issue: 2 %K %MOSTI ID: 10338561 %PMedium: X %TRoss 19B: An Extremely Cold Companion Discovered via the Backyard Worlds: Planet 9 Citizen Science Project %X %0Journal Article