C/2026 H3 ( Bok )

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Updated on June 4, 2026

Profile Discovery Date April 27, 2026 Magnitude 20.9 mag Discoverer R. A. Mastaler (Bok reflector at Kitt Peak)

Orbital Elements Epoch 2025 Nov. 21.0 TT = JDT 2461000.5 T 2026 May 23.13422 TT Pike q 7.7281568 (2000.0) P Q z -0.0005068 Peri. 98.49438 -0.24915573 -0.96519543 +/-0.0000172 Node 352.48514 -0.93576767 +0.26107979 e 1.0039166 Incl. 142.56761 +0.24952012 +0.01533366 From 59 observations 2025 July 20-2026 May 19, mean residual 0".4.

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

The orbital elements are published on M.P.E.C. 2026-K33. The magnitudes graphs are made with Comet for Windows.