NOAA KLM User's Guide

Appendix A.7

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APPENDIX A.7: Example of Decoded Two Line Orbital Element Message

The following is an example of a two-line orbital element message:

NOAA 14
1 23455U 94089A 95222.82483495 .00000053 00000-0 53646-4 0 2755
2 23455 98.9047 164.9161 0010620 42.0812 318.1174 14.11526152 31526

This example has been decoded in Table A.7-1.

Table A.7-1. Example of decoded two-line orbital element message.
NOAA-14 Satellite name "NOAA-14"
1 23455U 1 - Message line 1
23455 - Satellite number 23455
94089A 94 - Launch year 1994
089 - Launch number 89
A - Launch piece A (not in multiple pieces)
95222.82483495 95 - Epoch year 1995
222.82483495 - Julian day 222 and fraction
.00000053 First time derivative of the mean motion (plus sign implied)
00000-0 Second time derivative of the mean motion
53646-4 BSTAR drag term
0 Ephemeris type zero
2755 Element number 275
5 - Check sum
2 23455 2 - Message line 2
223455 - Satellite number 23455 (repeated)
98.9047 Orbit inclination 98.9047 degrees
164.9161 Right ascension of ascending node 164.9161 degrees
0010620 Eccentricity .0010620
42.0812 Argument of perigee 042.0812 degrees
318.1174 Mean anomaly 318.1174 degrees
14.11526152 Mean motion 14.11526152 revolutions per day
31526 3152 - Satellite revolution 3152 at epoch
6 - Check sum


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