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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:  Sun 23 Feb 21:53:57 UTC 2020

   Satellite     Days: 23   22   21   20   19   18   17   16   15   14       TotalNP  p   Score

1300301  Stsat2c       0    0    0    0    0    0    0    0    0    0         0      3   0    
1801407  Snet2         0    0    0    0    0    0    0    0    0    0         0      3   0    
1801408  Snet3         0    0    0    0    0    0    0    0    0    0         0      3   0    
1801410  Snet1         11   18   0    0    49   10   20   23   0    397       528    3   46480
1306702  Swarma        28   67   0    53   11   35   57   37   82   1241      1611   2   64780
1306703  Swarmc        39   21   43   51   0    31   62   33   45   1382      1707   2   65080
1801409  Snet4         24   32   65   41   54   38   46   28   9    520       857    3   106200
1804702  Gracefo2      76   105  39   110  90   97   115  79   58   1611      2380   2   124720
1804701  Gracefo1      85   116  68   125  95   70   148  75   59   1802      2643   2   139400
1704205  Technosat     15   4    5    25   30   23   37   30   11   646       826    3   192240
1306701  Swarmb        59   155  89   135  86   120  125  117  129  3843      4858   2   194200
1807001  Icesat2       0    66   24   46   52   7    56   88   127  1594      2060   2   227460
1003001  Tandemx       39   85   50   83   95   107  80   34   59   2012      2644   3   231720
0702601  Terrasarx     40   68   83   69   117  86   118  24   69   1887      2561   3   234400
1802001  Paz           7    242  110  29   188  126  177  82   74   3566      4601   3   390280
1803901  Sentinel3b    49   49   72   167  65   115  102  76   133  2965      3793   2   450480
1300901  Saral         31   84   77   89   137  153  174  183  147  2899      3974   2   499800
1601101  Sentinel3a    57   81   128  199  44   157  146  90   123  2871      3896   2   524160
1304201  Kompsat5      23   191  92   160  113  33   123  53   99   2656      3543   4   652240
1001301  Cryosat2      39   165  170  190  151  127  210  112  227  3301      4692   2   662220
1104301  Hy2a          26   59   15   51   49   52   82   59   54   1747      2194   3   1003680
1600201  Jason3        54   341  259  330  174  275  192  312  270  4964      7171   2   1057080
1808101  Hy2b          19   82   45   39   52   67   80   68   51   1904      2407   3   1137120
1200601  Lares         48   140  137  234  71   156  186  151  284  3220      4627   2   1279800
8900103  Etalon1       10   57   5    17   8    16   21   2    9    367       512    2   1650000
0304206  Larets        30   57   71   66   55   29   36   38   49   1092      1523   4   1807680
8903903  Etalon2       0    24   50   38   8    42   11   17   18   396       604    2   2000400
6503201  Beaconc       59   156  130  252  172  114  101  0    10   2652      3646   4   2274240
9207002  Lageos2       46   186  130  163  100  117  115  131  108  2912      4008   1   2275440
9306102  Stella        6    86   30   57   97   88   127  83   74   1967      2615   4   2576160
7603901  Lageos1       100  125  122  227  156  182  113  102  120  3533      4780   1   2656080
1602101  Compassi6b    4    8    0    0    6    9    8    0    0    65        100    5   2784000
1603401  Geoik2        38   109  88   22   19   90   114  116  127  2881      3604   4   3226560
1802901  Beidou3m9     0    0    7    6    12   10   11   0    9    116       171    5   3820800
1802902  Beidou3m10    0    7    7    16   12   8    4    4    8    111       177    5   4780800
1706902  Beidou3m2     0    11   11   4    6    4    11   0    8    171       226    5   4819200
1507901  Galileo209    6    14   0    12   13   0    0    15   0    132       192    5   5040000
7501001  Starlette     81   206  121  98   118  151  202  139  88   4007      5211   4   5370720
1405002  Galileo202    0    6    13   7    17   11   11   0    8    181       254    5   5808000
1603002  Galileo210    7    9    0    10   0    24   17   6    3    244       320    5   6499200
1801802  Beidou3m3     18   7    6    35   14   12   10   18   0    169       289    5   9052800
1301901  Glonass131    3    15   2    27   5    11   19   12   17   360       471    5   9225600
8606101  Ajisai        153  282  325  457  392  231  298  251  183  6206      8778   4   10507680
1808601  Glonass139    4    20   9    19   13   11   27   24   18   462       607    5   11865600
1805301  Glonass138    14   20   8    16   6    24   24   18   16   410       556    5   11942400
1106002  Galileo102    29   4    32   26   6    16   12   3    9    328       465    5   12316800
1407501  Glonass134    22   41   23   18   4    22   24   10   21   499       684    5   16320000