Basic information about the Tropical Rainfall Measuring Mission (TRMM) satellite, including overview of satellite and sensors, is available from here.
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TRMM lifts off on board H-11 Launch Vehicle No.6. On November 28, 1997 at 6 a.m. (JST), NASDA successfully launched TRMM and ETS-VII on board the H-II Vehicle Flight No.6 from the Tanegashima Space Center. TRMM separated 14 minutes and 12 seconds after liftoff, and it was confirmed to have been placed in its predetermined orbit.