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Re: (meteorobs) Geminids Parent Body



Hi all!

If I'm right, Geminids are likely to come from the earth-grazer asteroid
Phaeton. This explains the very low rate of fragmentation of the metezoroids
of this shower because of their density ( 2g/cm3). The discover of this
possible parent body of the Geminids had happen in 1983 an it's Fred Whipple
that first thought it could be the source of this meteor shower. It was
confirmed in 1990 by Bo Gustafon by the similarity between Geminids trajectory
and Phaeton. It's quite funny that an asteroid can let meteoroids on it's
orbit, and some explaination have been advanced to explain that, like the warm
up of the asteroid when it passes close to the Sun, the possible former comet
nature of Phaeton, the collision between meteoroids and the asteroid's
surface, a possible fragmentation of the asteroid itself... The meteoroids
that produce But other meteor showers seem to be linked to asteroids
trajectories and whose maxima had been calculated by both searchers Jack
Drummond and Ian Halliday may occur on February,22, August, 14 ( beta
triangulids? I'm not sure of the spelling and alpha ursamajorids? ) ,
september, 29 and december 22 ( Ursids?).
That's all I can found on it.
If I'm wrong, correct me please.

Two little questions, too:
1- Will report made of Geminids usable if they are made when the Moon is up?
2- What will happen for 2003 Leonids, ZHR of 10, more, less?

Clear skies and good luck for the Geminids and Ursids!

Karl.



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