very hot
I saw something very similar in November of 1950,while riding in the back of a truck and looking north. I thought there had been a nuclear attack !
Later on,after reading a lot of science fiction,I wondered if the meteor had contained “contra-terrene matter” (positrons instead of electrons,etc.)
The color of the “fireball” was almost exactly like that produced by the nuclear test at Eniwitok (sp?)a year or two later.
The average of 2 “Cool” and post 3 “Very hot”: Lukewarm!