Author/Authors :
Harmon، نويسنده , , J.K. and Nolan، نويسنده , , M.C. and Margot، نويسنده , , J.-L. and Campbell، نويسنده , , D.B. and Benner، نويسنده , , L.A.M. and Giorgini، نويسنده , , J.D.، نويسنده ,
Abstract :
Arecibo radar observations of Comet P/2005 JQ5 (Catalina) have produced the first delay-Doppler images of a comet nucleus and the first radar detection of large-grain ejection from a Jupiter-family comet. The nucleus is small (1.4 km diameter), rough, and rapidly rotating. The large (>cm) grains have low velocities (∼1 m/s) and a low production rate.
Keywords :
Cometsdust , Cometsnucleus , Radar observations , comets
