Aerobraking would both require an out-of-plane orbit to keep from running the gauntlet of the ring particles for millions of km every orbit and, once the apoapsis was lowered to the distance of the rings, leave the craft moving far slower than the orbital speed of the rings.    From Wordnik.com.  [Huygens landing video - The Panda's Thumb] Reference

All apoapsis maneuver numbers up to this point have been divisible by three.    From Wordnik.com.  [BBSNews ATOM 0.3 Newsreader Feed] Reference

Today the spacecraft is operating quietly out near apoapsis beginning with a.    From Wordnik.com.  [SpaceRef Top Stories] Reference

This is the apoapsis maneuver setting up for the Titan 47 encounter on Nov. 19.    From Wordnik.com.  [SpaceRef Top Stories] Reference

This was the apoapsis maneuver setting up for the Titan 71 encounter on July 7.    From Wordnik.com.  [SpaceRef Top Stories] Reference

Just a few hours later, apoapsis and the start of orbit #107 would have occurred.    From Wordnik.com.  [BBSNews ATOM 0.3 Newsreader Feed] Reference

This is the apoapsis maneuver setting up for the Enceladus 6 and Titan 46 encounters on Oct. 31 and Nov. 3.    From Wordnik.com.  [SpaceRef Top Stories] Reference

The Visual and Infrared Mapping Spectrometer (VIMS) was then active for 10 hours and performed an apoapsis mosaic of the unlit side of Saturn's rings.    From Wordnik.com.  [SpaceRef Top Stories] Reference

Today Imaging Science (ISS) acquired high priority science data for an 11-hour movie of the streamer-channel feature raised in the F-ring by the apoapsis passage of Prometheus.    From Wordnik.com.  [BBSNews ATOM 0.3 Newsreader Feed] Reference

How is it that at one moment Cassini can be found nearly at apoapsis, the farthest point from Saturn in an orbit, and within a day, be at periapsis, the closest point to Saturn in an orbit, when its orbital period is around 16 days?.    From Wordnik.com.  [BBSNews ATOM 0.3 Newsreader Feed] Reference

However, because of the gravitational influence of Titan during the flyby, Cassini's orbit is modified such that apoapsis on the new Saturn centered orbit occurs prior to the Titan encounter, on an orbit different from the one Cassini actually flew.    From Wordnik.com.  [BBSNews ATOM 0.3 Newsreader Feed] Reference

Automatically supplies the required root for primary-specific variations on the terms periapsis and apoapsis, e.g. peri / aphelion, peri / apogee, peri / apoareon, peri / apozene.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference