117P/Helin-Roman-Alu 1 (1997)

Japanese version
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 Updated on May 5, 2012

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* Profile

* Orbital Elements

Epoch 1997 Mar. 13.0 TT = JDT 2450520.5
T 1997 Mar. 26.87993 TT                                 MPC
q   3.7148211            (2000.0)            P               Q
n   0.10302147     Peri.  215.07880     +0.31019378     +0.93672922
a   4.5066195      Node    73.47166     -0.82896532     +0.35005384
e   0.1756967      Incl.    9.74254     -0.46539909     +0.00082741
P   9.57
From 2112 observations 1988 Aug. 12-2012 Apr. 29, mean residual 0".8.
     Nongravitational parameters Y1 = +0.34, Y2 = +0.0265.

* Finding Charts

* Magnitudes Graph

        m1 = -0.5 + 5 log d + 25.0 log r(t - 300)

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The orbital elements are published on M.P.E.C. 2012-J16.
The charts are made with StellaNavigator Ver.2.0 for Windows (AstroArts / ASCII).
The magnitudes graphs are made with Comet for Windows.

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