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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:  Fri 18 Sep 05:58:00 UTC 2020

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

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    15        15     3   600  
1801410  Snet1         0    60   24   8    49   64   83   11   21   798       1118   3   104280
1801409  Snet4         0    31   45   54   109  82   45   42   48   914       1370   3   135880
1306702  Swarma        0    149  141  94   90   110  168  96   83   1995      2926   2   146760
1306703  Swarmc        0    108  197  129  91   149  168  101  99   2520      3562   2   168700
1804701  Gracefo1      9    298  125  160  104  204  161  90   129  2681      3961   2   207780
1804702  Gracefo2      4    268  189  202  190  204  241  124  97   3023      4542   2   241820
0702601  Terrasarx     0    136  163  129  161  167  129  88   180  2351      3504   3   348920
1003001  Tandemx       3    166  220  167  135  136  100  154  132  2246      3459   3   372600
1306701  Swarmb        42   344  371  404  418  336  345  263  170  4597      7290   2   412120
1704205  Technosat     0    76   44   102  47   56   57   65   55   969       1471   3   457680
1802001  Paz           16   196  309  424  393  225  321  176  242  3333      5635   3   659040
1300901  Saral         54   221  242  240  232  225  265  91   195  3187      4952   2   814320
1001301  Cryosat2      9    266  218  278  225  214  228  164  191  4061      5854   2   866460
1304201  Kompsat5      9    372  368  51   68   207  263  376  219  3028      4961   4   1106240
1104301  Hy2a          0    14   0    103  166  95   107  126  94   1842      2547   3   1236960
8903903  Etalon2       14   24   27   19   24   8    24   32   3    493       668    2   1896000
8900103  Etalon1       0    33   25   17   32   30   16   31   19   482       685    2   1962000
1808101  Hy2b          8    175  155  186  138  151  156  93   146  2015      3223   3   2157600
1802902  Beidou3m10    0    0    0    0    0    6    4    3    0    205       218    5   2496000
1600201  Jason3        0    693  602  995  748  542  653  648  307  11338     16526  2   2503440
1200601  Lares         46   314  367  411  475  269  378  326  219  4931      7736   2   2538360
0304206  Larets        12   125  101  196  143  81   123  42   16   1741      2580   4   3397920
1602101  Compassi6b    6    3    11   0    6    13   1    0    0    85        125    5   3504000
9207002  Lageos2       5    249  189  318  319  219  231  197  208  4204      6139   1   3641520
6503201  Beaconc       106  317  287  330  251  132  83   232  164  3503      5405   4   3730560
7603901  Lageos1       40   317  309  289  397  168  267  171  129  3952      6039   1   4022640
9306102  Stella        7    176  174  197  199  134  158  112  80   2110      3347   4   4572960
1407501  Glonass134    0    0    0    0    0    0    0    8    0    485       493    5   4886400
1603401  Geoik2        7    216  228  141  242  179  185  162  165  2724      4249   4   5496960
1405002  Galileo202    0    11   19   2    17   8    4    5    0    167       233    5   5808000
1801802  Beidou3m3     0    9    4    8    17   13   15   30   14   164       274    5   6508800
1706902  Beidou3m2     0    9    7    15   18   19   7    17   11   211       314    5   7267200
1802901  Beidou3m9     6    12   6    16   33   12   12   23   4    163       287    5   8390400
1507901  Galileo209    5    9    16   20   7    15   11   23   2    246       354    5   8438400
7501001  Starlette     53   346  316  377  312  233  208  215  185  6060      8305   4   9482400
1603002  Galileo210    9    15   13   20   0    23   16   18   17   255       386    5   9513600
1106002  Galileo102    3    25   7    12   13   13   13   21   22   411       540    5   10636800
8606101  Ajisai        58   474  524  602  445  348  357  301  333  8580      12022  4   14034720
1301901  Glonass131    0    9    27   37   53   25   12   25   23   490       701    5   15916800
1805301  Glonass138    0    31   31   57   38   27   17   18   15   483       717    5   18470400
1808601  Glonass139    0    36   22   68   62   35   15   9    10   508       765    5   20524800