Cassini-Huygens Completes First Orbit of Saturn

On 01/07/2004, the Cassini-Huygens spacecraft successfully entered orbit around Saturn, becoming the first human made object to orbit the ringed planet. The orbital insertion required a 96 minute main engine burn, which slowed the spacecraft enough for Saturn’s gravity to capture it. During the maneuver, Cassini passed through a gap between Saturn’s rings to avoid dense ring particles. Confirmation of successful orbit insertion was received after the spacecraft reoriented its antenna toward Earth following the burn. The milestone came after a nearly seven year journey that began with launch on 15/10/1997. To reach Saturn, Cassini performed a series of gravity assist flybys, including two passes by Venus in 1998 and 1999, one by Earth in 1999, and a flyby of Jupiter in 2000. These maneuvers increased the spacecraft’s velocity and adjusted its trajectory toward the outer solar system. The spacecraft traveled approximately 3.5 billion kilometers before arriving at Saturn. Once in orbit, Cassini began studying Saturn, its rings, and its moons. The mission included the Huygens probe, which later separated and landed on Saturn’s moon Titan on 14/01/2005. Cassini’s orbital mission enabled long term observation of Saturn’s atmosphere, ring dynamics, and moons such as Enceladus and Titan. The 01/07/2004 orbit insertion marked the start of a multi year exploration phase that continued until the mission’s conclusion in September 2017.