Short article:http://www.nasaspaceflight.com/2011/09/japanese-h-2a-launches-new-igs-military-satellite/
No specific details were released on this latest IGS satellite, known only as Optical-4, although unconfirmed reports claim it was successfully separated after its ride uphill on the H-2A.
A third optical satellite – IGS 4A – and a second radar satellite – IGS 4B – were then launched on 24 February 2007. IGS 4A is classed as a advanced and experimental optical satellite, based on the Synthetic Aperture Radar (SAR) technology.
According to Stratcom,Object A (presumably Optical-4) is in the following orbit:589km x 590km x 97.69° Period 96.47 minutesObject B (which could be the H-2A second stage) is in the following orbit:564km x 591km x 97.65° Period 96.23 minutes