P/2020 A4 ( PanSTARRS-Lemmon )

Japanese version
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Updated on August 13, 2022

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* Profile

Discovery Date January 1 and February 3, 2020
Magnitude 21.4 mag and 19.6 mag
Discoverer Sam Deen (Simi Valley, CA, USA), Pan-STARRS 1 telescope (Haleakala), Mt. Lemmon Survey

* Orbital Elements

Epoch 2022 Aug. 9.0 TT = JDT 2459800.5                                          
T 2019 Nov. 22.60802 TT                                 Rudenko                 
q   2.8376174            (2000.0)            P               Q                  
n   0.04201974     Peri.  144.76602     -0.16479936     -0.93570618             
a   8.1940847      Node   312.41015     +0.77992460     +0.06996715             
e   0.6536993      Incl.   24.99036     +0.60378704     -0.34577238             
P  23.5                                                                         
From 106 observations 2019 Oct. 14-2021 Jan. 15, mean residual 0".4.            

* Magnitudes Graph

        m1 = 15.0 + 5 log d + 10.0 log r

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The orbital elements are published on M.P.E.C. 2022-P91.
The magnitudes graphs are made with Comet for Windows.

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Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.