Source : Webster's Revised Unabridged Dictionary (1913)

Apogean \Ap`o*ge"an\, a.
   Connected with the apogee; as, apogean (neap) tides, which
   occur when the moon has passed her apogee.

Source : WordNet®

apogean
     adj : relating to or characteristic of an apogee; "apogean tides
           occur when the moon is at the apogee of its orbit"