CREATE TABLE table_51872 ("Planet" TEXT, "Planet Type" TEXT, "Semimajor Axis  (  AU  ) " FLOAT, "Orbital Period" TEXT, "Radial velocity  ( m/s ) " FLOAT, "Detectable by:" TEXT)

What type of planet has a radial velocity of 45.2 m/s?
SELECT "Planet Type" FROM table_51872 WHERE "Radial velocity (m/s)" > '45.2'
SELECT "Planet Type" FROM "table_51872" WHERE "Radial velocity (m/s)" > '45.2'