(meteorobs) New possible parent comet

[Denis Denissenko]

Hello all!

tom6740 wrote:

> Interesting news! Thanks to Mikhail's work, and could you tell me
> when will the Earth pass the "point"?

I also noticed the interesting orbit of this comet yesterday and played 
around with it a little.  It turns out the comet is late by 38 days.  
That means, if it has passed the perihelion on July 22nd instead of 
August 30th, then we would have had a close approach to 0.026 a.u. on 
July 30th-31st.

Indeed, P/2004 R1 (McNaught) is currently listed among Potencially 
Hazardous Comets at http://neo.jpl.nasa.gov/cgi-bin/neo_elem?type=NEC at 
rank 6 if you sort 'em by MOID (min. orbit intersection distance).  But 
still it's MOID is 3 times larger than that of 55P/Tempel-Tuttle and 30 
times as compared to  109P/Swift-Tuttle.  Another point which makes 
meteor activity from this comet very unlikely is intrinsic faintness of 
2004 R1.  If I'm correct, its current brightness suggests an absolute 
magnitude of only 18.5.  This means there's a very little material left 
of this comet after its 1990 approach to Jupiter.

It will be interesting, however, if other - probably larger - remnants 
of the original body will be found.

Best regards,

Denis in Moscow

P.S. Can somebody calculate the coordinates of possible radiant related 
to this comet and velocity of meteors?