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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 14 Nov 23:58:20 UTC 2025

   Satellite     Days: 14   13   12   11   10   9    8    7    6    5    -30    TotalNP  p   Score

1306703  Swarmc        8    45   16   50   32   9    29   20   112  24   951       345    2   33431
1306702  Swarma        2    38   13   84   42   19   31   22   113  10   982       374    2   37522
1807001  Icesat2       54   0    4    77   49   31   28   89   113  87   982       532    2   46022
1306701  Swarmb        205  0    31   5    71   97   179  103  123  227  1989      1041   2   96829
1804702  Gracefo2      81   88   64   149  40   88   80   89   147  251  1526      1077   2   100906
1804701  Gracefo1      87   120  67   94   79   70   93   163  136  73   1757      982    2   105237
0702601  Terrasarx     86   46   69   148  71   75   88   155  121  157  1820      1016   3   196980
1802001  Paz           18   69   131  120  129  131  121  179  240  238  3152      1376   3   237432
1003001  Tandemx       139  45   90   158  128  53   59   206  188  248  2235      1314   3   247515
1601101  Sentinel3a    51   37   94   191  64   77   86   182  120  243  2010      1145   2   306450
1803901  Sentinel3b    36   61   107  174  100  26   97   154  131  283  2015      1169   2   308495
1300901  Saral         17   65   87   194  118  125  129  140  312  181  2990      1368   2   355970
1001301  Cryosat2      111  105  202  108  100  98   150  162  307  252  2538      1595   2   450678
2217301  Swot          14   158  180  277  135  132  102  207  231  284  3397      1720   2   494557
9804305  Westpac       24   17   85   44   26   27   30   18   66   138  687       475    4   508527
1200601  Lares         60   144  200  210  130  105  136  208  238  383  3720      1814   2   999480
8900103  Etalon1       12   21   35   3    5    5    8    30   33   36   282       188    2   1067082
1600201  Jason3        173  470  380  341  279  207  314  476  538  609  6749      3787   2   1114649
8903903  Etalon2       10   24   23   18   17   10   19   10   25   20   351       176    2   1145151
2006601  Hy2c          75   140  154  83   74   28   32   118  154  252  2082      1110   3   1309842
1808101  Hy2b          62   109  174  136  72   73   54   154  109  87   1939      1030   3   1375939
0304206  Larets        27   41   108  59   54   31   28   73   91   136  1041      648    4   1462161
9207002  Lageos2       95   170  170  115  69   71   93   145  146  245  2299      1319   1   1624219
2008601  Sentinel6a    356  487  757  587  444  227  411  706  839  859  7840      5673   2   1700200
2104301  Hy2d          103  166  191  102  141  81   62   131  203  131  2868      1311   3   1729668
1602101  Compassi6b    5    2    10   2    5    3    4    0    0    5    48        36     5   2188848
7603901  Lageos1       102  253  249  160  110  89   134  154  224  325  3440      1800   1   2231840
9306102  Stella        66   80   105  112  101  60   65   119  175  197  2168      1080   4   2437688
6503201  Beaconc       191  85   291  338  111  196  125  422  258  466  4585      2483   4   2827705
1802902  Beidou3m10    7    10   7    7    6    2    3    5    10   13   105       70     5   3561705
1507901  Galileo209    6    10   7    2    8    11   3    2    15   4    147       68     5   3600147
2208001  Lares2        105  237  183  167  111  59   121  176  153  369  2369      1681   2   4065089
1603002  Galileo210    19   3    7    14   10   0    3    3    8    16   136       83     5   4646536
1706902  Beidou3m2     16   5    10   10   10   3    5    5    8    39   140       111    5   4992140
1802901  Beidou3m9     2    22   19   14   5    0    0    0    8    9    135       79     5   5020935
7501001  Starlette     139  180  252  229  218  143  172  204  254  282  3829      2073   4   5159989
1801802  Beidou3m3     13   5    14   17   6    11   8    6    8    10   133       98     5   5500933
8606101  Ajisai        199  278  330  199  153  137  153  232  432  722  5760      2835   4   6256320
1405002  Galileo202    9    29   25   19   11   2    11   25   29   36   292       196    5   9341092
1106002  Galileo102    33   26   9    22   15   4    9    19   17   23   267       177    5   10080267