C-2025 R2

C/2025 R2 (SWAN), also known as SWAN25B and SWAN R2, is a non-periodic long-period comet discovered on September 10, 2025, by Ukrainian amateur astronomer Vladimir Bezugly using SOHO's SWAN instrument. It's the 20th comet found by this tool and reached perihelion on September 12 at 0.5 AU from the Sun, featuring a greenish coma and a tail up to 2.5 degrees long; its nucleus fragmented around mid-October, splitting into two pieces.

The apparent magnitude peaked around 6.1 but has faded to about 8.0. The closest approach to Earth was 0.43 AU on October 20, 2025; current distance is approximately 1.0 AU.