C/2012 S1 ( ISON )

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Updated on February 16, 2014

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* Profile

Discovery Date September 21, 2012
Magnitude 18.8 mag
Discoverer Vitali Nevski (Vitebsk, Belarus) and Artyom Novichonok (Kondopoga, Russia), International Scientific Optical Network (ISON) near Kislovodsk, Russia

* Pictures

* Orbital Elements

Epoch 2013 Dec. 14.0 TT = JDT 2456640.5
T 2013 Nov. 28.77923 TT                                 MPC
q   0.0124441            (2000.0)            P               Q
z  +0.0004078      Peri.  345.53625     +0.31488309     +0.51248194
                   Node   295.65203     -0.75874955     -0.36975682
e   0.9999949      Incl.   62.40300     -0.57021729     +0.77501107
From 6142 observations 2011 Sept. 30-2013 Nov. 22, mean residual 0".6.
     Nongravitational parameters A1 = +8.70, A2 = +0.0000.

* Finding Charts

* Magnitudes Graph

        m1 =  5.5 + 5 log d + 10.0 log r  [    ,-250]  (             - 2013 Mar. 23)
        m1 =  8.0 + 5 log d +  7.5 log r  [-250,   0]  (2013 Mar. 23 - 2013 Nov. 28)
        m1 = 12.5 + 5 log d + 10.0 log r  [   0,  12]  (2013 Nov. 28 - 2013 Dec. 10)
        m1 = 15   + 5 log d + 20   log r  [  12,    ]  (2013 Dec. 10 -             )

        * Green curve is:  m1 = 5.5 + 5 log d + 10.0 log r

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The orbital elements are published on M.P.E.C. 2013-Y32.
The charts are made with StellaNavigator Ver.8 (AstroArts).
The magnitudes graphs are made with Comet for Windows.

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