Degrees.
The drag term, in inverse Earth radii.
Unclassified, classified or secret.
0: SGP4, the only theory the engine propagates.
UTC, as in "2026-09-19T07:17:41.839008"; the zone designator is optional.
Degrees.
Degrees.
Revolutions per day.
A sixth of the second derivative of the mean motion, in revolutions per day cubed.
Half the first derivative of the mean motion, in revolutions per day squared.
The Catalogue number.
The international designator, as in "1998-067A".
Degrees.
The OMM fields the engine keeps, in the units the standard gives them.