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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 24 Oct 10:58:04 UTC 2025

   Satellite     Days: 24   23   22   21   20   19   18   17   16   15   -30    TotalNP  p   Score

1306703  Swarmc        7    36   32   47   40   12   34   0    15   0    448       223    2   29348
1306702  Swarma        12   32   38   53   36   25   36   15   25   0    588       272    2   33848
1804702  Gracefo2      2    58   39   52   65   44   54   93   85   113  1432      605    2   53552
1807001  Icesat2       21   36   134  113  9    33   0    105  64   131  1102      646    2   64902
1804701  Gracefo1      4    78   39   72   82   101  57   66   75   96   1542      670    2   66082
1306701  Swarmb        70   66   19   73   98   21   101  38   127  209  1368      822    2   73988
0702601  Terrasarx     15   26   44   50   82   78   53   86   63   58   1808      555    3   106688
1003001  Tandemx       13   22   30   43   67   91   185  84   47   29   1643      611    3   115283
1802001  Paz           22   153  18   41   70   30   54   122  120  148  2747      778    3   145467
1803901  Sentinel3b    23   92   64   70   71   42   109  36   138  81   2073      726    2   217893
9804305  Westpac       0    10   11   15   18   51   47   8    40   37   731       237    4   234731
1601101  Sentinel3a    29   91   84   94   76   82   92   140  92   51   2116      831    2   261796
1300901  Saral         0    52   93   148  93   108  245  119  128  81   2594      1067   2   303794
1001301  Cryosat2      33   154  104  135  73   144  119  42   73   111  1954      988    2   332554
2217301  Swot          20   157  109  167  119  119  181  126  100  32   2686      1130   2   380506
8900103  Etalon1       3    11   10   2    4    9    8    10   4    13   244       74     2   450244
1808101  Hy2b          11   51   34   59   76   58   108  60   105  59   1874      621    3   693314
2008601  Sentinel6a    149  288  243  163  139  328  422  238  272  208  8359      2450   2   776059
8903903  Etalon2       12   13   16   17   0    11   17   11   10   8    307       115    2   801907
1200601  Lares         35   176  147  121  93   143  231  136  104  83   2943      1269   2   825303
1600201  Jason3        109  315  238  291  165  456  418  274  271  282  8022      2819   2   875262
0304206  Larets        9    38   44   22   40   70   49   30   54   48   1030      404    4   946630
2006601  Hy2c          25   69   102  92   104  95   83   34   54   33   2732      691    3   963932
9207002  Lageos2       20   71   83   88   133  84   54   51   135  60   2223      779    1   970863
1602101  Compassi6b    0    7    0    2    3    6    2    0    0    0    9         20     5   1276809
2104301  Hy2d          34   130  71   138  116  109  207  72   67   94   2898      1038   3   1336578
1603002  Galileo210    0    0    8    6    0    5    0    0    5    0    190       24     5   1353790
7603901  Lageos1       46   155  118  143  130  99   220  127  124  74   3822      1236   1   1601742
6503201  Beaconc       80   213  205  110  108  163  62   33   133  46   1675      1153   4   1741435
9306102  Stella        28   100  64   75   82   72   118  87   88   87   2126      801    4   1953326
1801802  Beidou3m3     10   0    4    0    8    8    0    0    3    0    111       33     5   2169711
2208001  Lares2        58   89   86   100  103  64   83   88   96   73   2404      840    2   2195044
1802901  Beidou3m9     0    11   10   4    1    3    9    8    4    0    126       50     5   2841726
1507901  Galileo209    0    6    0    12   22   0    4    0    8    1    209       53     5   2909009
1802902  Beidou3m10    0    12   19   1    3    3    5    0    5    3    100       51     5   3196900
1706902  Beidou3m2     0    8    17   2    17   2    3    0    5    4    149       58     5   3456149
7501001  Starlette     38   186  156  206  99   230  115  157  144  129  3012      1460   4   3764292
1106002  Galileo102    3    7    7    15   9    4    9    4    19   4    249       81     5   4013049
8606101  Ajisai        58   267  107  155  253  263  292  243  172  164  7420      1974   4   4885180
1405002  Galileo202    4    40   8    8    9    2    39   8    21   2    348       141    5   7757148