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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:  Thu 26 Feb 03:55:45 UTC 2026

   Satellite     Days: 26   25   24   23   22   21   20   19   18   17   -30    TotalNP  p   Score

1306702  Swarma        9    50   59   43   20   43   46   30   87   63   845       450    2   44025
1804702  Gracefo2      0    47   81   28   47   43   66   29   54   35   1632      430    2   46792
1306703  Swarmc        7    61   48   57   20   39   50   85   46   108  786       521    2   48226
1804701  Gracefo1      0    89   139  32   79   33   82   83   41   112  1583      690    2   72523
1807001  Icesat2       0    135  86   42   56   90   128  56   135  171  1519      899    2   83599
1306701  Swarmb        0    134  143  68   46   43   66   118  68   88   1598      774    2   84778
0702601  Terrasarx     0    48   76   24   50   97   51   27   34   72   1621      479    3   98341
1003001  Tandemx       0    126  107  33   42   39   73   21   122  66   1960      629    3   135280
1802001  Paz           0    132  174  72   51   83   122  107  95   63   3002      899    3   197682
1601101  Sentinel3a    0    192  109  64   11   73   73   59   108  109  1850      798    2   258230
1803901  Sentinel3b    0    144  162  76   14   53   82   50   167  100  1586      848    2   264686
2104301  Hy2d          0    107  0    0    0    0    0    0    31   74   2195      212    3   265955
2217301  Swot          50   109  104  82   72   56   80   83   121  36   2497      793    2   269257
1300901  Saral         0    76   199  100  66   100  111  120  87   100  1830      959    2   298830
1001301  Cryosat2      0    110  137  99   104  113  145  107  124  143  2752      1082   2   318352
9804305  Westpac       0    23   68   30   46   5    11   17   43   39   466       282    4   356146
2526401  Sentinel6b    23   73   324  187  131  62   68   228  227  76   4758      1399   2   446958
8903903  Etalon2       2    16   5    4    8    6    18   8    19   18   161       104    2   554561
1602101  Compassi6b    0    0    0    8    0    0    0    4    0    0    71        12     5   652871
2008601  Sentinel6a    44   231  530  137  122  50   193  302  287  187  4174      2083   2   672514
1200601  Lares         14   167  156  112  46   68   162  110  104  117  2093      1056   2   673373
1603002  Galileo210    0    0    3    4    1    0    0    7    0    4    54        19     5   796854
8900103  Etalon1       0    14   35   11   0    6    19   6    16   36   210       143    2   810210
1600201  Jason3        16   471  629  116  98   70   277  288  293  194  5432      2452   2   841412
1808101  Hy2b          0    86   124  87   51   68   70   56   75   81   1649      698    3   889649
0304206  Larets        7    68   65   24   39   26   18   42   27   61   901       377    4   983461
6503201  Beaconc       0    133  196  104  96   32   41   59   44   31   2155      736    4   1127515
9207002  Lageos2       0    128  160  60   54   97   115  108  152  185  2013      1059   1   1186173
2006601  Hy2c          26   178  148  87   52   47   103  71   98   71   1770      881    3   1224330
7603901  Lageos1       3    138  206  84   64   69   156  142  124  175  2602      1161   1   1373002
1801802  Beidou3m3     0    2    6    6    0    0    3    10   12   5    149       44     5   1718549
1802902  Beidou3m10    0    2    11   0    4    4    7    4    2    6    107       40     5   1920107
2208001  Lares2        3    86   183  72   57   37   103  62   77   115  1792      795    2   2001472
1507901  Galileo209    0    4    4    4    8    4    0    5    14   5    166       48     5   2035366
9306102  Stella        0    97   138  111  29   46   119  105  124  107  2008      876    4   2067928
1802901  Beidou3m9     0    3    16   0    0    0    7    7    8    9    103       50     5   2198503
1706902  Beidou3m2     0    2    15   4    0    0    7    9    4    8    143       49     5   2275343
7501001  Starlette     0    108  147  129  134  100  121  108  145  127  3234      1119   4   2681634
1405002  Galileo202    0    2    8    8    12   7    0    3    15   7    99        62     5   2793699
1106002  Galileo102    0    2    25   3    9    0    5    10   5    14   225       73     5   3523425
8606101  Ajisai        56   227  187  242  134  169  212  194  262  180  4273      1863   4   4600753