Satellite Orbital Elements Database

These mean orbital parameters are not intended for ephemeris computation accurate ephemerides should be obtained from our horizons system mean orbital parameters are primarily useful in describing the general shape and orientation of a planetary satellite s orbit.

Satellite orbital elements database.

Orbital elements at epoch 2459042 5 2020 jul 12 0 tdb reference. An index showing the composition of each two line element set data file all data is contained in the files above use it to find which file s you need to download. We provide this data as either keplerian osculating or mean element sets which include the two line and amsat formats. 650 x 3832 km.

Every elset already displays a value for the object s mean motion n and eccentricity e so we derive these additional four values using the following calculations. Beware that the two line element tle format is very rigid. Satellite s ground track is the path on the surface of the earth which lies exactly below its orbit. This file is updated thursday evenings around 2300 utc or more frequently if new high interest satellites are.

Jpl 20 heliocentric ecliptic j2000. In general it takes at least six parameters to uniquely define an orbit and a satellite s position within the orbit. This index also includes links describing many satellite payloads. Bulletin format elements for all satellites of interest to radio amateurs.

In this section let us discuss about the equations which are related to orbital motion. The trajectory data which describes the motion of a satellite can take on a variety of formats. Now all the orbital elements in the satellite catalog satcat are available in the tle class. When a new satellite is launched there is some confusion regarding tles.

Forces acting on. More than 20 000 of these are larger than a softball. Orbital status designation name in spacetrack catalog orbit. The index includes information on age of each element set.

However the value of the same element e g. The meaning of each character is based on its exact offset from the beginning of the line. Space debris junk trash is the collection of defunct man made objects in space like old satellites spent rocket stages and fragments from disintegration. 554 x 2937 km.

You can find satellite element sets at the norad two line element sets page of the celestrak web site. The ground track of a satellite can take a number of different forms depending on the values of the orbital elements. According to nasa more than 500 000 pieces of orbital debris as big as a marble or larger are tracked as they orbit the earth.