C/2021 A9 ( PanSTARRS )

Japanese version Home page

Updated on March 11, 2025

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

Orbital Elements Perturbed ephemeris below is based on elements from MPEC 2025-DP4. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2460280.50000 2460280.3946243 211.47205 314.83549 158.01413 e q a Epoch (TT) 1.0013374 7.7601136 2023/12/02.00

Magnitudes Graph m1 = -4.0 + 5 log d + 20 log r(t + 150)

The orbital elements are calculated using the Minor Planet & Comet Ephemeris Service. The magnitudes graphs are made with Comet for Windows.