C/2007 JA21 ( LINEAR )

Japanese version
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Updated on October 12, 2008

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* Profile

Discovery Date May 11, 2007
Magnitude 19.9 mag
Discoverer Lincoln Laboratory Near-Earth Asteroid Research project

* Pictures

* Orbital Elements

The following orbital elements are taken from MPC 62581:

Epoch 2006 Nov. 1.0 TT = JDT 2454040.5
T 2006 Nov. 14.3813 TT                                  MPC
q   5.368174             (2000.0)            P               Q
z  -0.000426       Peri.   93.6987      -0.0292595      -0.4133137
 +/-0.000005       Node    65.5222      -0.4497578      -0.8076890
e   1.002288       Incl.   89.8404      +0.8926712      -0.4204882
From 137 observations 2007 May 11-2008 Apr. 4, mean residual 0".6.

* Magnitudes Graph

        m1 = 9.5 + 5 log d + 7.0 log r

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The orbital elements are published at the MPC Ephemerides and Orbital Elements.
The magnitudes graphs are made with Comet for Windows.

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