Condensed Orbit/Attitude Data

Description

These investigator-supplied, condensed orbit/attitude data are on binary magnetic tape created on an IBM 360 computer. Each tape contains both orbit and attitude records. The 3100-byte orbit record consists of modified Julian day and milliseconds (ms) of day of the first data value; time increment between observations (ms); reference time of coordinate system; Greenwich hour angle at epoch; and 128 values per record for each of the following: position vectors (km), invariant latitude (deg), geomagnetic time (hours), and dip latitude (deg). The 3388-byte attitude record contains an attitude-quality indicator; modified Julian day and ms of day of first observation; time increment between observations (ms); date data were processed and number of times reprocessed; number of sets of quaternions; and 240 values per record for each of the following: first, second, and third components of quaternions that transform from sensor platform coordinates to celestial true-of-date geocentric coordinates at start time, and attitude-quality flags.