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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:  Wed Dec 13 21:52:05 UTC 2017

   Satellite     Days: 13   12   11   10   9    8    7    6    5    4        TotalNP  p   Score

0201201  Gracea        0    0    0    0    0    0    0    0    0    0         0      2   0    
0201202  Graceb        0    0    0    0    0    0    0    0    0    0         0      5   0    
1300301  Stsat2c       0    0    0    0    0    0    0    0    0    0         0      3   0    
1503701  Compassms2    0    0    0    0    0    0    0    0    0    0         0      5   0    
1306702  Swarma        132  94   34   21   8    46   45   82   113  76        651    2   71820
1306703  Swarmc        158  46   25   51   20   83   60   60   129  45        677    2   76180
1704205  Technosat     51   16   25   11   60   27   41   55   8    47        341    3   218160
1306701  Swarmb        324  287  13   134  66   103  416  241  314  283       2181   2   221480
1003001  Tandemx       176  121  71   64   40   86   324  156  198  125       1361   3   272800
0702601  Terrasarx     202  147  103  75   71   72   244  117  123  89        1243   3   285600
1503702  Compassms1    0    0    0    0    3    0    0    3    3    3         12     5   345600
0200901  Envisat       30   16   9    45   18   19   72   13   38   29        289    4   351840
1601101  Sentinel3a    129  106  84   39   103  124  227  263  167  78        1320   2   392160
1300901  Saral         99   146  64   124  71   203  284  259  141  81        1472   2   444060
1001301  Cryosat2      174  123  81   60   89   128  309  230  170  103       1467   2   447480
1304201  Kompsat5      159  249  181  50   0    123  291  32   35   145       1265   4   617520
8903903  Etalon2       18   4    11   10   9    20   15   30   23   17        157    2   889200
0803201  Jason2        407  252  110  121  95   351  601  560  350  276       3123   2   927000
8900103  Etalon1       9    22   8    19   7    24   37   24   13   7         170    2   1080000
1600201  Jason3        367  324  174  203  179  350  813  556  319  249       3534   2   1081800
1200601  Lares         180  225  112  160  108  194  432  347  235  113       2106   2   1297320
1104301  Hy2a          125  124  71   120  42   128  287  164  159  69        1289   3   1606320
0304206  Larets        60   63   46   75   38   89   116  83   61   53        684    4   1738080
9207002  Lageos2       196  178  94   122  75   187  221  253  197  97        1620   1   2084880
9306102  Stella        75   79   55   68   72   81   132  144  84   55        845    4   2110560
1201801  Compassm3     0    6    3    3    8    2    11   14   9    3         59     5   2534400
7603901  Lageos1       195  243  163  146  153  230  282  330  229  121       2092   1   2694720
1405001  Galileo201    13   6    4    1    0    10   8    4    5    0         51     5   3139200
1405002  Galileo202    0    6    6    5    5    7    15   12   16   7         79     5   3235200
6503201  Beaconc       216  315  257  166  175  117  451  382  338  198       2615   4   3281280
1603401  Geoik2        105  71   32   113  57   476  332  189  121  149       1645   4   3717120
7501001  Starlette     300  190  48   129  103  237  357  291  222  126       2003   4   5122080
8606101  Ajisai        257  326  344  293  203  240  581  445  333  256       3278   4   8306880