[meteorite-list] Composition of Russian bolide smoke trail

[GeoZay at aol.com]

>>When we look at the smoke trail or  meteor train from the Russian
> fireball, what we're seeing is fine meteor  dust lit up by the sun,
> correct? Is there a water vapor component as  well?
> Thank you for your responses.
> Bob<<

Bob, I  don't know about any water vapor trail, but I bet there's a big ion 
trail from  various atmospheric elements such as oxygen and nitrogen that 
were long lasting.  
George Zay