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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:  Tue 24 Nov 07:57:00 UTC 2020

   Satellite     Days: 24   23   22   21   20   19   18   17   16   15       TotalNP  p   Score

1801410  Snet1         0    25   7    23   16   14   0    39   49   493       666    3   52640
1801409  Snet4         0    25   10   12   34   35   71   0    16   666       869    3   70000
1306703  Swarmc        0    74   82   37   49   48   49   57   68   1839      2303   2   89140
1306702  Swarma        5    69   85   43   86   96   32   55   58   1775      2304   2   96640
1804701  Gracefo1      17   145  74   87   122  53   184  126  64   2984      3856   2   157980
1804702  Gracefo2      32   127  68   90   158  78   251  100  154  3032      4090   2   172380
1704205  Technosat     0    35   17   65   51   63   88   2    20   368       709    3   275160
1304201  Kompsat5      0    0    10   26   0    5    66   0    12   3459      3578   4   322720
1306701  Swarmb        103  213  59   242  332  345  337  191  290  5230      7342   2   331220
0702601  Terrasarx     0    190  110  107  224  146  137  68   101  2621      3704   3   359520
1003001  Tandemx       0    208  103  112  150  221  139  74   69   2668      3744   3   362760
1802001  Paz           0    117  45   100  213  272  301  103  116  4272      5539   3   430720
1807001  Icesat2       5    80   161  118  235  144  187  98   99   1339      2466   2   455580
1601101  Sentinel3a    34   114  125  122  223  240  270  101  64   3213      4506   2   628920
1803901  Sentinel3b    41   120  71   130  277  284  306  91   47   3090      4457   2   643860
1300901  Saral         0    154  79   141  306  301  255  119  94   4262      5711   2   730380
1001301  Cryosat2      0    150  115  170  216  262  317  129  114  4355      5828   2   738240
8900103  Etalon1       0    20   17   10   3    11   16   9    16   273       375    2   1026000
8903903  Etalon2       0    15   8    13   8    9    29   14   11   331       438    2   1072800
1200601  Lares         0    127  95   124  200  220  211  190  115  4275      5557   2   1318800
1600201  Jason3        65   192  282  390  424  501  558  291  308  7100      10111  2   1394040
2006601  Hy2c          19   123  57   128  141  26   46   9    21   2870      3440   3   1619520
1808101  Hy2b          0    97   104  105  159  101  155  95   42   2255      3113   3   1714320
9207002  Lageos2       0    127  71   56   144  151  183  151  54   2717      3654   1   1855680
0304206  Larets        6    61   70   68   86   53   120  62   62   1650      2238   4   2335680
7603901  Lageos1       14   115  112  153  237  200  310  146  113  3799      5199   1   2704080
6503201  Beaconc       17   157  102  193  236  113  173  189  152  4250      5582   4   2770560
1602101  Compassi6b    0    7    2    3    3    3    13   0    0    147       178    5   3187200
9306102  Stella        0    140  80   77   132  126  161  80   89   2270      3155   4   3452640
1603401  Geoik2        0    133  95   151  220  181  160  150  73   3207      4370   4   4647360
1802901  Beidou3m9     0    8    6    5    4    3    21   3    14   173       237    5   4684800
1507901  Galileo209    0    6    0    9    15   4    22   7    4    184       251    5   5068800
1801802  Beidou3m3     0    0    5    11   20   7    10   9    2    191       255    5   5126400
1802902  Beidou3m10    0    13   8    7    0    11   21   10   3    170       243    5   5520000
1405002  Galileo202    0    8    2    3    8    7    22   7    21   281       359    5   5990400
1706902  Beidou3m2     0    18   6    5    4    4    28   5    30   164       264    5   6144000
1603002  Galileo210    0    13   11   8    0    11   22   10   11   233       319    5   6614400
7501001  Starlette     11   208  183  213  315  280  294  182  170  5352      7208   4   7507680
1106002  Galileo102    0    9    6    19   20   7    36   23   3    300       423    5   8985600
8606101  Ajisai        70   305  178  274  453  448  532  414  304  7774      10752  4   11278560
1301901  Glonass131    0    13   12   15   19   22   33   10   11   518       653    5   11942400
1805301  Glonass138    5    23   17   23   31   5    32   16   19   416       587    5   13392000
1808601  Glonass139    0    14   11   19   39   41   42   25   34   449       674    5   14841600
1407501  Glonass134    0    16   20   13   44   28   28   29   35   548       761    5   15513600