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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:  Fri Apr 20 08:52:14 UTC 2018

   Satellite     Days: 20   19   18   17   16   15   14   13   12   11       TotalNP  p   Score

1300301  Stsat2c       0    4    0    4    0    0    0    0    0    0         8      3   7680 
1801409  Snet4         0    2    24   45   0    0    24   32   1    0         128    3   28760
1306703  Swarmc        14   106  159  61   21   29   78   135  155  46        804    2   82740
1306702  Swarma        22   200  114  84   29   46   56   125  141  68        885    2   97460
0702601  Terrasarx     7    130  206  69   27   31   83   128  206  102       989    3   196720
1003001  Tandemx       23   120  204  132  37   33   68   105  109  135       966    3   207720
1704205  Technosat     33   77   99   48   34   15   27   64   87   65        549    3   356280
1306701  Swarmb        110  365  492  376  195  185  312  728  439  592       3794   2   359000
1300901  Saral         9    230  277  145  120  95   85   167  213  157       1498   2   480600
1001301  Cryosat2      57   291  284  204  114  71   148  212  199  197       1777   2   585060
1601101  Sentinel3a    81   269  312  228  70   73   148  363  291  368       2203   2   644340
1304201  Kompsat5      0    164  497  277  119  114  169  105  204  257       1906   4   826480
8903903  Etalon2       0    31   23   22   7    6    10   10   7    20        136    2   951600
1503702  Compassms1    0    4    2    3    1    0    0    8    0    3         21     5   1017600
0803201  Jason2        179  581  388  115  103  270  429  634  265  223       3187   2   1036020
8900103  Etalon1       0    23   31   25   14   11   12   19   9    19        163    2   1093200
1104301  Hy2a          42   105  204  82   46   14   48   109  109  126       885    3   1147200
1200601  Lares         25   269  260  282  166  113  180  422  311  391       2419   2   1354200
1600201  Jason3        200  447  677  495  208  400  461  652  468  497       4505   2   1403100
0304206  Larets        27   100  158  67   35   48   56   96   110  76        773    4   1997280
9207002  Lageos2       34   250  176  158  222  58   126  219  206  201       1650   1   2040000
1603401  Geoik2        21   127  236  113  79   71   113  164  89   70        1083   4   2905440
7603901  Lageos1       68   372  312  276  180  140  239  291  309  288       2475   1   3113040
9306102  Stella        39   171  210  149  85   95   80   158  189  137       1313   4   3334080
6503201  Beaconc       86   377  477  330  200  282  188  319  321  398       2978   4   3777120
1405002  Galileo202    2    23   9    6    6    0    3    17   23   11        100    5   4771200
1603002  Galileo210    0    19   26   7    8    3    8    6    3    16        96     5   5404800
7501001  Starlette     57   305  301  174  141  115  142  409  387  342       2373   4   5411040
1201801  Compassm3     2    31   25   9    5    0    5    16   14   23        130    5   6825600
1507901  Galileo209    0    31   7    23   17   13   4    12   19   3         129    5   7257600
8606101  Ajisai        93   449  557  324  288  40   248  564  346  335       3244   4   8320320
1705501  Glonass137    0    20   24   19   20   13   11   20   28   32        187    5   8467200
1603201  Glonass136    10   22   38   12   14   0    14   32   32   26        200    5   9715200
1106002  Galileo102    6    23   43   27   19   6    4    38   6    22        194    5   10636800
1407501  Glonass134    7    36   48   17   22   12   14   29   27   43        255    5   12758400
1301901  Glonass131    6    51   35   34   18   30   21   17   49   33        294    5   14985600