421P/McNaught (2009)

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Updated on June 27, 2021

Profile Designation 421P/2009 U4 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.