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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 Oct 18 17:52:33 UTC 2017

   Satellite     Days: 18   17   16   15   14   13   12   11   10   9        TotalNP  p   Score

0201202  Graceb        0    0    0    0    0    0    0    0    0    0         0      2   0    
1504905  Pn1a          0    0    7    0    0    0    0    0    9    0         16     4   5920 
1300301  Stsat2c       0    7    0    0    0    0    0    17   24   20        68     3   21840
0201201  Gracea        47   163  34   114  87   58   152  105  73   7         840    2   97900
1306702  Swarma        28   99   116  78   100  160  120  150  106  145       1102   2   106640
1306703  Swarmc        53   119  129  42   94   116  154  201  142  55        1105   2   112580
1503701  Compassms2    0    0    0    0    0    2    1    0    0    0         3      5   134400
1704205  Technosat     14   55   19   13   11   24   44   54   8    8         250    3   171120
1306701  Swarmb        158  225  158  258  273  250  322  246  183  83        2156   2   240760
1003001  Tandemx       91   156  208  175  178  225  119  133  148  38        1471   3   344200
0702601  Terrasarx     84   237  282  91   138  244  195  194  161  47        1673   3   385800
1503702  Compassms1    0    0    4    0    0    0    0    2    6    0         12     5   480000
1001301  Cryosat2      128  267  229  229  156  228  264  221  148  122       1992   2   679860
1300901  Saral         106  316  238  260  210  195  227  212  201  160       2125   2   718140
1601101  Sentinel3a    92   273  311  187  201  237  291  223  235  172       2222   2   722400
0200901  Envisat       42   40   123  44   82   13   63   73   71   59        610    4   792240
1304201  Kompsat5      157  248  221  196  139  181  378  191  0    0         1711   4   861280
0803201  Jason2        169  757  798  412  375  343  385  95   227  114       3675   2   1447740
1104301  Hy2a          70   198  195  101  109  171  157  203  202  48        1454   3   1907280
8900103  Etalon1       15   55   23   33   39   36   25   19   21   12        278    2   2022000
1600201  Jason3        262  718  992  768  546  728  671  590  633  416       6324   2   2126760
1200601  Lares         228  436  436  375  372  302  429  287  315  178       3358   2   2333280
8903903  Etalon2       11   46   75   47   38   20   38   15   10   14        314    2   2414400
0304206  Larets        66   117  134  87   71   92   100  109  83   60        919    4   2511840
9207002  Lageos2       157  362  335  179  187  200  336  226  226  143       2351   1   3240000
6503201  Beaconc       90   370  361  204  252  229  200  356  387  123       2572   4   3352320
1201801  Compassm3     5    6    13   6    0    5    11   13   2    2         63     5   3494400
7603901  Lageos1       173  313  369  286  255  239  319  268  313  198       2733   1   3631200
9306102  Stella        112  186  186  152  99   152  163  183  134  84        1451   4   3961440
1405001  Galileo201    6    7    27   12   8    3    15   14   2    3         97     5   5712000
1405002  Galileo202    6    18   26   9    3    9    13   16   15   26        141    5   6835200
7501001  Starlette     252  376  302  281  198  267  346  281  259  180       2742   4   7552800
8606101  Ajisai        269  485  427  431  304  470  543  480  544  306       4259   4   10880640