by Christian Huygens » Tue Dec 28, 2004 7:44 pm
RJ Emery wrote:I seek a web page that would show the two separate paths of Huygens and Cassini about Saturn. I am having difficulty understanding where the two spacecraft are and why the probe is three weeks away plunging into Titan.
Simple. One orbit around Saturn takes at least a few weeks for Cassini (for now: it will vary in length and shape over the next 4 years of mission).
Right now, Cassini’s type of orbit is a collision crash course with Titan. ESA Huygens Probe, being inert, has been jettisoned from Cassini a few days ago. It precedes almost exactly the same path of orbit as Cassini (as been verified in the last hours).
As time goes by, Huygens’ will get “ahead” of Cassini on it’s path to Titan: few seconds, few minutes, eventually a few hours ahead of it’s mother ship.
As soon as Huygens will encounter Titan’s atmosphere outer layers, diving in parachute sequence and eventually touch (or splash) down, it will constantly relay data to Cassini - that will get closer and closer to Titan’s neighbourhood. Then, Cassini will veer away from it’s crash course orbit with Saturn’s satellite, relaying to earth all the data transmitted by Huygens (during its few hours of useful life on Titan).
And continue it’s observation of Saturn’s system for a few years, if all goes according to plan.
[quote="RJ Emery"]I seek a web page that would show the two separate paths of Huygens and Cassini about Saturn. I am having difficulty understanding where the two spacecraft are and why the probe is three weeks away plunging into Titan.[/quote]
Simple. One orbit around Saturn takes at least a few weeks for Cassini (for now: it will vary in length and shape over the next 4 years of mission).
Right now, Cassini’s type of orbit is a collision crash course with Titan. ESA Huygens Probe, being inert, has been jettisoned from Cassini a few days ago. It precedes almost exactly the same path of orbit as Cassini (as been verified in the last hours).
As time goes by, Huygens’ will get “ahead” of Cassini on it’s path to Titan: few seconds, few minutes, eventually a few hours ahead of it’s mother ship.
As soon as Huygens will encounter Titan’s atmosphere outer layers, diving in parachute sequence and eventually touch (or splash) down, it will constantly relay data to Cassini - that will get closer and closer to Titan’s neighbourhood. Then, Cassini will veer away from it’s crash course orbit with Saturn’s satellite, relaying to earth all the data transmitted by Huygens (during its few hours of useful life on Titan).
And continue it’s observation of Saturn’s system for a few years, if all goes according to plan.