At 9:12 pm (0412 GMT Thursday), the National Aeronautics and Space Administration's Jet Proopulsion Laboratory in Pasadena received a signal from the probe indicating it had shut down its engines thereby ending its orbiting maneuver.
"We have burn complete here," said a NASA official to shouts of joy of the dozens of engineers at mission control communications who jumped up from their seats to congratulate each other for a job well done.
Eighteen minutes later, exactly on schedule, NASA received another signal from the probe's high-gain antenna indicating that all systems were operating normally and that it was ready to begin it's four-year mission to explore Saturn.
"We are ready for the big science pay-off, starting now," said Cassini mission manager Robert Mitchell.
The orbiting maneuver ended a seven-year, 3.5 billion-kilometerbillion-mile)
voyage from the launch pad at Cape Canaveral, Florida, to explore the second-largest planet of the solar system.
The product of NASA, the European Space Agency and the Italian Space Agency working together, Cassini-Huygens is the first man-made object to orbit around the ringed planet, second in size in the solar system to Jupiter.
During its orbit entry, the probe will fly closer to Saturn than it will at any other moment of its four-year mission to come, giving it the chance to study the planet from about 20,000 kilometers (12,000 miles) away.
The craft is made up of a US-built orbiter (Cassini) and the European-built probe (Huygens). The US contribution is 2.6 billion dollars and the EU, 660 million.
During the next four years, the probe will make 76 orbits around Saturn and 52 close passes at seven of the 31 known moons.