C/2025 J1 ( Borisov )

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Updated on August 10, 2025

Profile Discovery Date May 2, 2025 Magnitude 19.3 mag Discoverer Gennady Borisov (Nauchnij, Crimea) Pictures

Orbital Elements Epoch 2025 May 5.0 TT = JDT 2460800.5 T 2026 June 11.79923 TT Pike q 3.5807679 (2000.0) P Q z +0.0008999 Peri. 166.61264 -0.08935028 +0.07604827 +/-0.0000291 Node 273.97462 +0.79732426 +0.60300971 e 0.9967777 Incl. 95.44543 +0.59690079 -0.79410072 From 211 observations 2025 Apr. 29-Aug. 3, mean residual 0".5.

Magnitudes Graph m1 = 8.0 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2025-P113. The magnitudes graphs are made with Comet for Windows.