Abstract: The collision of comet Shoemaker-Levy 9 with Jupiter is essentially a particular meteoric physical problem during the cometary fragments into Jupiter's atmosphere. In this paper, profile formula of their velocity, mass loss, luminosity, electron line density and energy release rate on height are derived from fundamental equations of meteoric physics. Using reasonable parameters, a series of results are calculated. The results are compared with observations and discussed. It is shown that initial mass of the largest fragment of SL9 is of order 10¹⁶ g and do not penetrate into H₂O cloud layer of Jupiter due to its airburst.