C/2021 A9 ( PanSTARRS )

Japanese version Home page

Updated on March 27, 2023

Profile Discovery Date January 12, 2021 Magnitude 21.4 mag Discoverer Pan-STARRS 1 telescope (Haleakala) Pictures

Orbital Elements Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 T 2023 Dec. 1.53673 TT Rudenko q 7.7601897 (2000.0) P Q z -0.0003115 Peri. 211.45693 -0.25838513 +0.92887149 +/-0.0000028 Node 314.84162 +0.94571647 +0.29927418 e 1.0024170 Incl. 158.01938 +0.19712300 -0.21824923 >From 280 observations 2020 Dec. 12-2023 Mar. 17, mean residual 0".6.

Magnitudes Graph m1 = -2.5 + 5 log d + 18.0 log r

The orbital elements are published on M.P.E.C. 2023-F81. The magnitudes graphs are made with Comet for Windows.