Data Fields (Satellite Dialog)
Satellite - Select a satellite for inspection of orbital elements or
tracking. The list contains three groups: the current settings for the
tracking window; the settings for each of the other tracking windows; and the
list read from the file. If the desired satellite is not in the list, type the
The following fields are filled in from the data file, but may be edited by
the user (for a new satellite, for example):
Beacon Freq, MHz - user entry, used for calculating path loss and
Mode - user entry, to designate the mode or type of signal expected.
Ephemeris - From NASA 2-line data, the type of model used to generate
NORAD ID - The 5-digit object identifier (serial order of launch)
International - The international identifier (year, launch number,
Element Set - 3-digit number identifying the data set. Multiple
element sets can be loaded and identified in the selection window by this
UTC Epoch - The epoch of the element set.
Description - Allows entry of text to describe the satellite. In the
case of NASA 2-line data files, this contains the element set number and the
object number, if available. In the case of AMSAT data files, contains any
comments found in the element set.
In Edit mode, additional fields appear for Reference and
possibly Adjusted Element sets. Any of these fields may be edited.
Adjust to Epoch - Epoch for adjustment of Keplerian Elements (by the
Orbit #, Mean Anomaly, Mean Motion, Derivative of Mean Motion, Inclination,
Eccentricity, Argument of Perigee, and Right Ascension of Ascending Node
(RAAN). All angles are in degrees. These are the "Reference"
The following fields are calculated and should not be edited:
Semi-Major Axis, Altitude at Perigee, Altitude at Apogee . All
distances are in kilometers here. These are relative to spherical earth.
Long of Node. The (earth) longitude of the ascending node. Useful for
setting up geosynchronous satellites, for example. Entering a value here will
change the Right Ascension of the Node to match.
Display and Window Overview
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