Some key numbers for Cassini's Grand Finale and final plunge into Saturn.
Cassini's Grand Finale: By the Numbers
Coming within 1,012 miles of Saturn's clouds (1,628 km).
22 orbits in total.
Passing through a gap 1,500 miles wide (2,400 km).
76,806 mph top speed relative to Saturn 123,608 kph).
5 passes through Saturn's upper atmosphere.
4 passes through Saturn's innermost ring (D ring).
1 final plunge into Saturn on September 15, 2017.
1 minute from atmosphere entry to loss of contact.