The outer solar system is yielding its secrets to the Vera C. Rubin Observatory.

Less than five months into the observatory’s decade-long survey of the sky, a potential new dwarf planet has already popped up in its data, astronomers reported this week at a meeting of the American Astronomical Society’s Division of Planetary Sciences in Spokane, Wash.

Another team reported a handful of new Neptune Trojans, icy objects that share an orbit with Neptune, at the meeting and in the Astrophysical Journal Letters . The findings are filling in astronomers’ picture of the Kuiper Belt at the solar system’s frigid fringes.

“It feels a little bit like we’re replicating the 1800s and early 1900s, discovering what the solar system even looks like in general,” says Sam Deen, an amateur astronomer based in Simi Valley, Calif.…