C/2022 S4 ( Lemmon )

Japanese version Home page

Updated on August 10, 2025

Profile Discovery Date September 19, 2022 Magnitude 20.6 mag Discoverer Mt. Lemmon Pictures

Orbital Elements Epoch 2025 May 5.0 TT = JDT 2460800.5 T 2024 July 18.78120 TT Pike q 2.7618584 (2000.0) P Q z +0.0007218 Peri. 268.56195 +0.14462960 -0.76065309 +/-0.0000009 Node 220.17806 +0.26859987 -0.58537102 e 0.9980065 Incl. 101.21643 -0.95233208 -0.28062011 From 755 observations 2022 Aug. 26-2025 June 3, mean residual 0".6.

Finding Charts

Magnitudes Graph m1 = 9.5 + 5 log d + 9.5 log r(t + 250) * Gray curve is: m1 = 9.0 + 5 log d + 8.5 log r

The orbital elements are published on M.P.E.C. 2025-M120. The charts are made with StellaNavigator Ver.10 (AstroArts). The magnitudes graphs are made with Comet for Windows.