Comet Shoemaker-Levy 9 fragment size and mass estimates from light flux observations

Details Comet Shoemaker-Levy 9 fragment size and mass estimates from light flux observations Comet Shoemaker-Levy 9 fragment size and mass estimates from light flux observations

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28..267c&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 267.

Statistics

Computation

2

Fragments, Mass Distribution, Size Determination, Hubble Space Telescope, Hypervelocity Impact, Temporal Resolution, Diameters, Density Measurement, Kinetic Energy

Scientific paper

Time-resolved light-flux observations are used in conjunction with computational simulations performed with the CTH shock-physics hydrocode to determine the size and mass of the 15 fragments that make impact features on the planet discernible to the HST. The three largest fragments were each greater than 1 km in diameter and represented approximately 74 percent of the mass of the comet. If combined, all 15 fragments would make a sphere 1.8 km in diameter. Assuming a prebreakup density of 0.5 g/cu cm, the parent body had a probable diameter of 1.4 km. The total kinetic energy of all the impacts was equivalent to the explosive yield of 300 gigatons of TNT.

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