P/2009 U4 ( McNaught )

Japanese version
Home page
Updated on May 31, 2021

---------------------------------------------------------------------

* Profile

Discovery Date October 23, 2009
Magnitude 16.8 mag
Discoverer Robert H. McNaught (Siding Spring Observatory)

* Orbital Elements

Epoch 2009 Sept. 6.0 TT = JDT 2455080.5                                         
T 2009 Sept.  9.11527 TT                                Rudenko                 
q   1.6492111            (2000.0)            P               Q                  
n   0.08592570     Peri.  259.91974     +0.70205215     +0.69725622             
a   5.0861285      Node    55.69386     -0.56525905     +0.66927021             
e   0.6757433      Incl.   10.09325     -0.43313390     +0.25673167             
P  11.5                                                                         
From 100 observations 2009 Oct. 11-2020 May 25, mean residual 0".6.             

* Finding Charts

* Magnitudes Graph

        m1 = 14.0 + 5 log d + 10.0 log r

---------------------------------------------------------------------

The orbital elements are published on M.P.E.C. 2021-K101.
The charts are made with StellaNavigator Ver.8 (AstroArts).
The magnitudes graphs are made with Comet for Windows.

---------------------------------------------------------------------

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