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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 5 Jul 22:55:35 UTC 2026

   Satellite     Days: 5    4    3    2    1    30   29   28   27   26   -30    TotalNP  p   Score

2318518  Nanoffa       0    0    0    0    0    0    0    0    0    0    160       0      4   160  
1306702  Swarma        0    0    0    20   17   24   16   0    6    49   993       132    2   10733
1306703  Swarmc        0    3    18   28   10   21   0    0    3    58   924       141    2   12844
1807001  Icesat2       0    0    58   26   70   21   30   0    59   71   1106      335    2   30706
1804702  Gracefo2      0    7    34   94   29   50   108  34   35   67   1199      458    2   42959
1306701  Swarmb        0    0    0    95   95   114  100  0    0    27   1412      431    2   46052
1804701  Gracefo1      0    42   58   109  68   98   116  47   30   102  1818      670    2   67218
0702601  Terrasarx     22   21   40   122  16   64   88   19   18   84   1034      494    3   102154
1300901  Saral         0    0    9    42   34   95   100  12   43   129  1371      464    2   103131
1003001  Tandemx       26   19   85   134  7    44   68   0    33   52   1083      468    3   109123
9804305  Westpac       4    10   12   22   2    16   19   25   16   19   320       145    4   162080
2217301  Swot          4    25   70   106  91   125  148  46   37   174  2851      826    2   225811
1802001  Paz           0    57   99   313  145  121  121  53   47   141  2012      1097   3   235972
1001301  Cryosat2      56   38   145  140  61   118  114  82   62   141  2509      957    2   300409
1602101  Compassi6b    2    0    0    0    0    0    2    0    0    6    11        10     5   326411
1601101  Sentinel3a    52   65   102  153  129  205  122  47   91   205  2512      1171   2   350932
1803901  Sentinel3b    25   88   112  178  157  190  179  77   76   120  2689      1202   2   380389
2526401  Sentinel6b    30   122  179  269  78   158  195  144  92   221  3108      1488   2   458388
1600201  Jason3        25   127  289  367  182  265  287  219  87   208  6304      2056   2   658984
2008601  Sentinel6a    44   173  256  322  205  238  270  186  160  302  4758      2156   2   663498
1200601  Lares         67   120  190  121  169  169  150  83   124  196  1997      1389   2   874277
8900103  Etalon1       11   9    30   18   7    16   4    0    4    29   313       128    2   878713
1801802  Beidou3m3     0    0    0    2    3    5    8    1    0    1    78        20     5   892878
8903903  Etalon2       2    3    33   22   20   17   12   3    6    17   258       135    2   907458
1808101  Hy2b          27   42   95   154  52   91   94   52   62   128  1515      797    3   970395
0304206  Larets        17   38   23   51   56   61   45   37   30   54   793       412    4   1008313
1802901  Beidou3m9     4    0    3    2    1    2    0    0    3    8    52        23     5   1036852
1706902  Beidou3m2     0    0    3    4    2    8    3    0    0    4    130       24     5   1152130
2104301  Hy2d          79   54   86   150  117  147  93   87   102  185  1667      1100   3   1315187
1802902  Beidou3m10    2    5    3    2    3    0    4    0    0    4    29        23     5   1353629
9207002  Lageos2       61   120  95   129  128  155  133  29   135  156  2269      1141   1   1428109
2006601  Hy2c          31   105  136  112  133  185  96   124  133  123  2851      1178   3   1441651
6503201  Beaconc       102  36   49   88   148  278  220  60   114  260  3270      1355   4   1485990
7603901  Lageos1       95   112  136  242  67   146  174  62   139  339  2686      1512   1   1771726
2208001  Lares2        88   48   86   172  35   130  93   38   106  169  1926      965    2   2368806
9306102  Stella        27   39   134  134  122  127  133  84   62   107  2204      969    4   2408444
7501001  Starlette     47   62   164  179  101  163  135  121  87   169  3830      1228   4   3008630
2608701  Gps083        0    8    10   9    11   8    3    11   5    8    66        73     5   3686466
1405002  Galileo202    6    1    15   11   5    10   3    6    3    12   95        72     5   3782495
2601701  Gps082        6    9    9    7    7    13   12   7    7    4    128       81     5   4377728
8606101  Ajisai        64   43   341  316  260  352  243  213  174  264  6714      2270   4   5531514