Forum der Vereinigung der Sternfreunde

Werner Hasubick hat eine Beobachtung beigesteuert.

Orbital elements:
    C/2020 X4 (Leonard)                                                         
Epoch 2020 Nov. 7.0 TT = JDT 2459160.5                                          
T 2020 Nov. 10.79651 TT                                 Rudenko                 
q   5.2092780            (2000.0)            P               Q                  
z  +0.0213968      Peri.  139.48854     +0.68928909     +0.65652783             
 +/-0.0000000      Node   161.90273     -0.56521877     +0.22278915             
e   0.8885382      Incl.   80.47920     +0.45321991     -0.72064985             
From 80 observations 2020 Dec. 14-2021 Jan. 5, mean residual 0".6.              
                                                                                
    C/2020 X4 (Leonard)                                                         
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                                         
T 2020 Nov. 10.85337 TT                                 Rudenko                 
q   5.2092870            (2000.0)            P               Q                  
z  +0.0213833      Peri.  139.49514     +0.68936319     +0.65644240             
 +/-0.0000000      Node   161.90180     -0.56519304     +0.22283223             
e   0.8886083      Incl.   80.48035     +0.45313930     -0.72071435             
From 80 observations 2020 Dec. 14-2021 Jan. 5, mean residual 0".6.   

https://minorplanetcenter.net/mpec/K21/K21AA1.html

(CBET 4909)

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Uwe Pilz, Fachgruppen Kometen und Astrophysik/Algorithmen.
Oft benutzte Instrumente: Swarovski SLC 7x50B, Fujinon 16x70 FMT-SX-2, TMB Apo 105/650, Skywatcher Evostar 120/900 ED, Ninja Dobson 320/1440