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Latest Satellite Tracking Priorities

SLR satellites are listed in order of highest priority to enable best coverage by the ILRS network.


The table below shows the number of normal points submitted to the EDC data centre by the ILRS network over the last 10 days. A priority is assigned to each satellite depending on its requirements for tracking. A priority setting of 1 is twice the priority of a setting of 2 which is twice as high in priority as a setting of 3.

A weighting is applied according to the number of Normal Points collected in the previous 10 days with the most recent data having a higher weighting, reducing its priority. This weighting is scaled by the satellite normal point bin length.

The satellites are tabled in decreasing order of their immediate priority for tracking. This table is updated every hour.

Click here to see a Herstmonceux only dynamic priority table
Updated:  Mon 22 Apr 23:54:33 UTC 2019

   Satellite     Days: 22   21   20   19   18   17   16   15   14   13       TotalNP  p   Score

1300301  Stsat2c       0    0    0    0    0    0    0    0    0    0         0      3   0    
1706902  Beidou3m2     0    0    0    0    0    0    0    0    0    0         0      5   0    
1801407  Snet2         0    0    0    0    0    0    0    0    0    0         0      3   0    
1801408  Snet3         0    0    0    0    0    0    0    0    0    0         0      3   0    
1304201  Kompsat5      0    0    0    0    0    0    41   130  59   9         239    4   54480
1801410  Snet1         44   8    26   33   38   22   29   20   7    0         227    3   59160
1306703  Swarmc        51   51   52   94   52   65   149  52   66   6         638    2   71400
1306702  Swarma        48   33   95   41   39   139  127  61   62   12        657    2   71600
1801409  Snet4         66   76   73   58   51   64   43   35   37   0         503    3   132440
0702601  Terrasarx     47   73   84   130  78   63   75   101  49   55        755    3   169920
1804701  Gracefo1      99   121  110  207  192  350  169  217  151  100       1716   2   180780
1807001  Icesat2       20   85   83   93   0    73   102  50   84   6         596    2   202620
1804702  Gracefo2      96   150  172  231  213  326  287  157  193  56        1881   2   205440
1003001  Tandemx       44   68   174  106  115  86   126  129  64   106       1018   3   217240
1306701  Swarmb        262  188  317  439  287  303  583  140  361  72        2952   2   334080
1601101  Sentinel3a    91   108  124  230  199  196  182  162  124  91        1507   2   492660
1803901  Sentinel3b    130  182  111  150  171  219  176  58   140  74        1411   2   493740
1704205  Technosat     54   46   69   112  91   108  149  35   48   16        728    3   502680
1300901  Saral         94   67   220  261  213  223  243  189  121  48        1679   2   561120
1001301  Cryosat2      156  214  174  311  242  372  239  232  167  123       2230   2   748560
1808101  Hy2b          16   63   117  71   69   114  114  86   96   40        786    3   981600
1104301  Hy2a          23   63   146  208  72   185  130  144  93   36        1100   3   1428480
1200601  Lares         105  109  229  339  350  397  286  275  119  144       2353   2   1520640
1600201  Jason3        249  349  642  768  524  665  512  403  447  77        4636   2   1610400
1107301  Compassi5     6    0    5    5    2    3    5    0    2    2         30     5   1804800
8903903  Etalon2       20   20   21   37   48   62   52   33   30   7         330    2   2134800
1603001  Galileo211    5    0    4    8    3    10   3    2    0    4         39     5   2188800
0304206  Larets        36   53   78   138  104  129  135  60   94   31        858    4   2224800
8900103  Etalon1       21   23   28   50   41   63   49   35   34   5         349    2   2311200
9207002  Lageos2       92   70   280  282  255  253  209  136  127  81        1785   1   2433120
6503201  Beaconc       75   128  146  341  380  304  195  368  225  223       2385   4   2835360
7603901  Lageos1       140  152  298  293  303  286  147  225  150  108       2102   1   2909280
9306102  Stella        110  57   125  168  125  170  164  131  127  37        1214   4   3229920
1602101  Compassi6b    0    0    4    8    17   8    14   12   23   0         86     5   3532800
1603401  Geoik2        33   137  208  187  133  233  127  122  98   76        1354   4   3669600
1802901  Beidou3m9     0    6    0    36   6    4    10   0    0    0         62     5   3859200
1501701  Galileo203    6    3    3    12   19   0    9    13   14   7         86     5   4022400
1606903  Galileo213    0    4    19   4    11   16   0    15   9    10        88     5   4176000
1405002  Galileo202    0    4    17   15   2    11   22   4    7    2         84     5   4416000
1802902  Beidou3m10    3    5    13   17   9    4    21   5    4    2         83     5   4617600
1603002  Galileo210    0    9    11   7    22   15   3    21   15   2         105    5   5107200
1801802  Beidou3m3     7    0    6    15   15   23   10   18   12   2         108    5   5260800
7501001  Starlette     149  90   200  236  288  346  290  209  197  149       2154   4   5443200
1205501  Galileo103    4    9    13   16   16   17   6    18   11   0         110    5   5932800
1507901  Galileo209    0    14   27   13   17   21   13   0    2    2         109    5   6700800
1201801  Compassm3     14   4    6    25   14   18   28   12   28   7         156    5   7526400
8606101  Ajisai        207  238  338  463  355  404  303  455  263  97        3123   4   8403360
1106002  Galileo102    4    14   35   10   31   41   1    15   33   14        198    5   9945600
1301901  Glonass131    9    24   29   35   20   36   19   21   16   8         217    5   12115200
1407501  Glonass134    3    10   36   40   47   32   37   30   22   23        280    5   13776000
1705501  Glonass137    12   21   17   33   57   46   29   27   20   15        277    5   14400000
1603201  Glonass136    16   17   27   37   31   26   63   35   28   13        293    5   14688000