Also a rocket used to place military satellites in medium earth orbits. It is an interdisciplinary scientific organization concerned with international progress in all areas of scientific research carried out with space vehicles, rockets, and balloons. A celestial coordinate that measures the angle north or south of the celestial equator. Zero degrees is on the celestial equator, and 90 degrees North is the celestial north pole. Delta United States launch vehicle used for commercial and military satellites.
Eccentricity Defines the roundness or ovalness of an ellipse.
An ellipse with eccentricity 0 is a circle. Elset Orbital element set. Data used to describe a satellite's orbit. A common format used by satellite prediction software is known as two-line elsets or TLEs. Epoch Time associated with an element set.