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RE: (meteorobs) Visual meteors unobservable from 1997 XF11
In a message dated 13 Mar 1998 22:26:36 +1100 (EST), you wrote:
<< It has been about a decade since I calculated a meteor radiant, and I had
to resurrect a Commodore 64 program to make the calculation! >>
Is it convenient for you to make a similiar calculation for 1997 BR? It's
the 96th PHAs and also has an orbit which is very close to Earth orbit. I
have special interest on this object for that's the first NEA discovered
by my group and I have a web page for it at
http://vega.bac.pkudot edu.cn/~zj/scap/special/neo/1997br/1997br.html
Its orbital elements from MPC 30903 by Gareth Williams is as follows:
1997 BR
Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams
M 124.54260 (2000.0) P Q
n 0.63868924 Peri. 133.67812 -0.30550780 +0.91468756
a 1.3353947 Node 116.77864 -0.93645766 -0.23832238
e 0.3056718 Incl. 17.24049 -0.17237179 -0.32641861
P 1.54 H 17.5 G 0.15 U 1
From 403 observations at 3 oppositions, 1980-1997, mean residual 0".59.
Orbital elements from MPC 30903.
With best regards, Jin
Beijing Astronomical Observatory (zj@bac.pkudot edu.cn)