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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:  Mon Jun 18 14:52:27 UTC 2018

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

1503702  Compassms1    0    0    0    0    0    0    0    0    0    0         0      5   0    
1801407  Snet2         0    0    0    16   4    0    2    0    0    0         22     3   5760 
1300301  Stsat2c       0    0    0    16   0    8    0    0    0    0         24     3   18240
1801409  Snet4         14   18   19   44   18   0    50   0    8    5         176    3   43640
1801410  Snet1         0    21   30   24   37   64   29   28   21   11        265    3   55680
1801408  Snet3         28   9    37   69   27   25   8    7    0    56        266    3   61440
1306703  Swarmc        52   56   111  139  125  55   117  87   3    79        824    2   94480
1306702  Swarma        4    54   71   165  150  182  137  102  56   62        983    2   101740
1804702  Gracefo2      22   45   206  107  144  190  144  101  102  119       1180   2   120760
1804701  Gracefo1      54   33   162  125  161  114  205  164  105  95        1218   2   123220
1003001  Tandemx       0    14   92   271  175  103  97   50   115  64        981    3   206240
0702601  Terrasarx     0    26   167  218  160  104  74   116  102  34        1001   3   218320
1306701  Swarmb        79   218  141  328  253  236  271  212  154  118       2010   2   220400
1601101  Sentinel3a    11   49   140  92   131  95   82   121  84   61        866    2   269760
1704205  Technosat     9    34   74   34   78   60   65   25   35   35        449    3   292080
1803901  Sentinel3b    19   49   188  127  166  93   168  170  141  110       1231   2   363540
1300901  Saral         23   39   140  235  145  144  153  106  155  87        1227   2   375780
1001301  Cryosat2      57   204  81   248  163  164  230  150  126  160       1583   2   502200
1304201  Kompsat5      0    26   242  176  102  248  315  83   0    19        1211   4   542560
8903903  Etalon2       1    9    13   22   37   5    8    11   8    8         122    2   822000
1104301  Hy2a          0    31   82   131  120  136  138  84   41   36        799    3   1001760
0803201  Jason2        93   159  372  521  655  373  419  441  361  376       3770   2   1132560
1200601  Lares         53   144  173  272  159  259  244  241  171  173       1889   2   1149240
1600201  Jason3        176  218  359  421  603  332  473  606  442  383       4013   2   1187760
8900103  Etalon1       10   18   25   31   19   22   8    23   23   10        189    2   1272000
9207002  Lageos2       41   99   139  185  202  177  177  101  146  117       1384   1   1734000
0304206  Larets        24   51   78   97   76   80   134  80   93   54        767    4   1859520
6503201  Beaconc       27   23   211  124  269  321  296  209  174  52        1706   4   2031120
9306102  Stella        33   52   104  121  91   89   99   55   83   72        799    4   2048160
7603901  Lageos1       50   134  191  242  267  204  211  172  172  174       1817   1   2262720
1603401  Geoik2        16   120  71   166  170  130  165  172  115  82        1207   4   2941440
1405002  Galileo202    0    6    7    9    10   8    5    5    0    3         53     5   2985600
1603002  Galileo210    0    8    16   5    7    22   6    2    2    9         77     5   4128000
1201801  Compassm3     7    9    10   6    6    8    9    12   5    10        82     5   4233600
7501001  Starlette     52   117  158  289  280  189  242  236  257  183       2003   4   4731840
1507901  Galileo209    1    8    14   18   13   3    21   11   13   8         110    5   5414400
1106002  Galileo102    9    17   20   12   16   15   12   5    14   8         128    5   7267200
8606101  Ajisai        93   305  321  419  461  405  386  291  342  330       3353   4   8351040
1705501  Glonass137    0    19   21   22   17   22   21   27   11   14        174    5   8697600
1603201  Glonass136    0    26   50   30   19   26   16   17   18   12        214    5   12009600
1407501  Glonass134    24   10   13   32   63   25   37   27   29   19        279    5   14083200
1301901  Glonass131    0    66   33   9    27   36   26   21   33   28        279    5   14630400