Here is the latest keplerian element set for NROL-24/USA-198 (2007-060A/32378) posted by Ted Molzcan to the SEESAT-L newsgroup. Many thanks to Ted and the group for the update below.
525 X 39695 km
1 32378U 07060A 08005.56155949 .00000000 00000-0 00000-0 0 06
2 32378 62.6300 308.0133 7393786 266.0881 15.1031 2.01368592 01
Arc 2007 Jan 02.76 - 05.89, WRMS residuals = 0.008 deg
The last reported frequency from this bird was by Greg Roberts in South Africa. He observed an S-band downlink at 2242.5 MHz.