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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:  Sun 16 Aug 09:53:55 UTC 2026

   Satellite     Days: 16   15   14   13   12   11   10   9    8    7    -30    TotalNP  p   Score

1306703  Swarmc        0    12   29   34   43   13   47   4    5    3    465       190    2   22745
1306702  Swarma        0    27   22   40   39   20   41   13   0    0    530       202    2   25250
2318518  Nanoffa       0    7    0    0    0    12   0    12   0    0    112       31     4   38272
1804702  Gracefo2      13   34   88   139  23   37   92   48   66   59   1190      599    2   63970
1804701  Gracefo1      19   60   122  140  49   76   89   39   74   110  1401      778    2   83221
1807001  Icesat2       50   96   93   143  105  143  26   0    0    45   1641      701    2   93701
1306701  Swarmb        9    76   100  188  126  104  68   119  56   109  2135      955    2   102455
0702601  Terrasarx     0    33   80   107  97   50   66   41   30   113  1685      617    3   124805
1003001  Tandemx       0    42   31   130  55   91   82   80   71   65   1685      647    3   125525
1802001  Paz           0    156  121  273  179  83   162  44   218  165  3005      1401   3   289125
1300901  Saral         0    88   110  161  121  150  81   60   94   75   1965      940    2   304485
9804305  Westpac       0    19   27   64   21   43   7    16   28   19   505       244    4   318985
1602101  Compassi6b    0    0    0    3    0    3    0    0    0    0    26        6      5   345626
1803901  Sentinel3b    32   85   140  186  165  97   105  96   74   149  2319      1129   2   361539
1601101  Sentinel3a    20   78   130  234  176  95   129  53   74   114  2347      1103   2   365227
2526401  Sentinel6b    20   100  130  281  317  215  147  67   81   194  3147      1552   2   496887
1001301  Cryosat2      0    173  177  302  192  183  188  153  147  126  2945      1641   2   530045
2217301  Swot          60   158  185  337  384  165  240  181  110  223  2162      2043   2   658322
2008601  Sentinel6a    33   181  339  387  392  276  237  94   153  327  4091      2419   2   782591
1600201  Jason3        56   148  317  722  423  401  379  232  416  444  5726      3538   2   1056506
1200601  Lares         38   146  155  252  310  186  243  110  211  239  3482      1890   2   1137602
0304206  Larets        0    50   45   93   73   58   52   53   75   44   1064      543    4   1321064
1808101  Hy2b          13   61   122  207  147  125  95   82   91   104  1868      1047   3   1327388
2104301  Hy2d          16   23   49   249  250  178  154  85   163  119  2761      1286   3   1492681
8903903  Etalon2       10   24   28   27   54   37   11   16   27   14   367       248    2   1677967
2006601  Hy2c          0    144  160  247  203  177  122  151  125  133  2389      1462   3   1858069
8900103  Etalon1       0    26   61   40   47   37   24   19   11   16   402       281    2   1992402
9207002  Lageos2       29   127  96   371  177  316  174  179  135  151  3628      1755   1   2186188
1802902  Beidou3m10    0    0    0    16   10   7    7    2    3    2    68        47     5   2390468
7603901  Lageos1       27   135  235  324  281  227  168  195  158  195  3176      1945   1   2456456
2608701  Gps083        0    0    0    15   16   10   6    4    2    8    313       61     5   2870713
6503201  Beaconc       0    145  271  477  291  292  269  147  298  287  4193      2477   4   2984513
1802901  Beidou3m9     0    0    6    7    23   13   2    2    3    2    110       58     5   3091310
1801802  Beidou3m3     0    7    17   11   7    2    5    1    4    1    94        55     5   3456094
9306102  Stella        10   105  125  298  156  157  150  154  125  124  2669      1404   4   3500909
1706902  Beidou3m2     4    0    6    7    22   16   16   2    0    3    108       76     5   4051308
2208001  Lares2        34   138  123  346  316  151  253  137  138  292  3037      1928   2   4625437
8606101  Ajisai        135  164  322  409  303  201  274  148  186  411  5417      2553   4   6442697
7501001  Starlette     49   186  266  460  309  340  280  205  236  289  3665      2620   4   6513425
1405002  Galileo202    9    3    21   23   33   15   7    2    2    18   206       133    5   7440206
2601701  Gps082        0    15   22   25   34   21   19   8    5    16   257       165    5   8841857