Chandra Orbit Controller sent me the following state vector in km, km/s: 25 Jul 1999 13:00:00.0000 UTC 14341.781689, 3200.342466, 471.524974 -5.199520, 3.387636, -2.539670 Geocentric cartesian J2000 This is the DSN-based post-IPS-1 orbit. Note the Space Command orbit (from independent data) is 1 25867U 99040B 99206.05347222 -.00000025 00000-0 00000+0 0 78 2 25867 28.4406 196.0256 8242614 270.3420 180.3395 0.97337724 32 Can someone vec2tle the state vector so we can compare them? Jonathan McDowell