To: SLR Stations Fm: GFZ Orbit Prediction System Op: Christian Ackermann, GFZ DSIDP GRCB.ORB.PRD DRAG FUNCTION A 021220 IRV SET 021220 EPHEM NO 489 SATELLITE 8004 MAXEPOCH 2 EPOCH 1083.5 DRAG FRCO 0.0 70.9 2.3 NMAX 20 EPOCH 1085.5 DRAG FRCO 0.0 88.4 2.8 NMAX 20