Sample Orbital Element Data File

The following is sample orbital element data file for image file pl0jan89_1519_trk.img. The file indicates the orbital elements for the imagery acquired and the nadir track positions every 10 seconds during the pass. In cases where the nadir track is outside the grid, the file contains only the orbital elements. Satellite number 19531 is NOAA-11. Other satellites are identified as follows:

PLOT'TRACK    11-FEB-1991     09:31:29.33

LISTING FILE  pl0jan89_1519.dat
IMAGE FILE    pl0jan89_1519_trk.img

SATELLITE NUMBER             19531
REVOLUTION NUMBER            1526
MEAN ANOMALY                 .3717761
MEAN MOTION                  .8277287
MODIFIED DECAY COEFFICIENT   .0007100
ECCENTRICITY                 .0012072
ARGUMENT OF PERIGEE          .8827872
LONGITUDE OF ASCENDING NODE  .5707038
INCLINATION                  .2747912
EPOCH (Y/M/D)                890111

START TIME	89/01/10   15:19:55
STOP TIME	89/01/10   15:31:12
TIME INTERVAL	00:00:10

PROJECTION    POLAR STEREOGRAPHIC

CENTER LATITUDE   78.33
CENTER LONGITUDE  197.93

DEGREES/PIXEL LATITUDE   .054000
DEGREES/PIXEL LONGITUDE  .054000

SAMPLES      375
LINES        467

		LAT         LONG   YR JDAY    SECS   REVN

		79.803   273.315   89   10   55645   1526
		80.077   270.315   89   10   55655   1526
		80.322   267.158   89   10   55665   1526
		80.539   263.851   89   10   55675   1526
		80.724   260.403   89   10   55685   1526
		80.875   256.830   89   10   55695   1526
		80.992   253.154   89   10   55705   1526
		81.072   249.398   89   10   55715   1526
		81.114   245.592   89   10   55725   1526
		81.119   241.766   89   10   55735   1526
		81.085   237.952   89   10   55745   L526
		81.014   234.182   89   10   55755   1526
		80.906   230.486   89   10   55765   1526
		80.762   226.888   89   10   55775   1526
		80.585   223.410   89   10   55785   1526
		80.375   220.070   89   10   55795   1526
		80.136   216.878   89   10   55805   1526
		79.869   213.843   89   10   55815   1526
		79.576   210.966   89   10   55825   1526

The document is adapted from:

Fetterer and Hawkins. 1991. An AVHRR data set for the Arctic leads ARI. Naval Oceanographic and Atmospheric Research Laboratory, Technical Note 118. 61 p.