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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 9 Jun 16:51:44 UTC 2023

   Satellite     Days: 9    8    7    6    5    4    3    2    1    31       TotalNP  p   Score

1704205  Technosat     0    0    0    0    0    0    0    0    0    0         0      3   0    
1306702  Swarma        13   48   56   0    57   51   19   32   9    91        376    2   37760
1306703  Swarmc        7    21   52   70   73   31   17   57   26   73        427    2   42440
1804701  Gracefo1      27   41   7    55   46   32   71   120  55   27        481    2   45940
1804702  Gracefo2      24   52   6    53   64   62   63   99   27   55        505    2   49580
1306701  Swarmb        51   102  129  0    77   78   126  245  124  31        963    2   96600
0702601  Terrasarx     59   44   93   51   35   31   40   87   39   11        490    3   118480
1003001  Tandemx       25   82   121  56   24   104  41   48   40   28        569    3   137120
1807001  Icesat2       56   122  67   86   61   20   72   102  45   38        669    2   239040
1300901  Saral         62   81   53   41   41   131  174  66   47   77        773    2   241560
1802001  Paz           40   307  124  102  88   84   155  276  212  113       1501   3   312080
1001301  Cryosat2      45   199  134  135  134  112  140  167  133  166       1365   2   426900
1803901  Sentinel3b    71   143  167  154  189  74   152  164  139  186       1439   2   448740
2217301  Swot          49   199  165  149  107  114  168  175  182  175       1483   2   455520
1304201  Kompsat5      11   186  19   8    113  196  296  231  205  44        1309   4   478480
1601101  Sentinel3a    77   185  150  183  165  108  152  142  188  151       1501   2   480420
8903903  Etalon2       13   6    20   5    4    14   10   29   8    13        122    2   754800
1802901  Beidou3m9     0    2    2    0    3    1    5    1    0    4         18     5   806400
8900103  Etalon1       2    19   22   12   0    3    27   19   21   25        150    2   837600
1600201  Jason3        181  320  277  256  200  283  170  452  289  368       2796   2   857700
0304206  Larets        7    50   37   29   28   43   22   78   48   82        424    4   912960
2008601  Sentinel6a    174  362  299  309  229  421  247  291  287  386       3005   2   951180
1808101  Hy2b          49   133  87   71   69   80   102  116  100  74        881    3   1133760
1602101  Compassi6b    0    3    0    0    4    5    10   0    0    3         25     5   1142400
7603901  Lageos1       105  96   57   87   61   81   121  159  114  87        968    1   1206240
9207002  Lageos2       74   101  78   116  89   87   95   134  222  79        1075   1   1286160
1802902  Beidou3m10    2    2    2    0    0    2    8    13   2    3         34     5   1363200
2006601  Hy2c          41   130  123  109  111  79   116  163  168  139       1179   3   1395840
2104301  Hy2d          54   150  138  115  114  122  205  209  216  196       1519   3   1720320
2208001  Lares2        59   125  67   94   60   86   61   115  82   91        840    2   2180640
1603401  Geoik2        42   145  99   51   55   87   97   130  101  101       908    4   2265600
1405002  Galileo202    1    8    5    0    1    3    8    13   11   8         58     5   2342400
9306102  Stella        57   113  72   89   107  105  120  102  111  91        967    4   2424960
1603002  Galileo210    1    6    0    0    5    0    21   24   15   17        89     5   2851200
6503201  Beaconc       142  232  200  239  139  173  386  390  219  273       2393   4   2857200
1801802  Beidou3m3     5    6    8    0    18   13   2    7    18   11        88     5   4003200
1507901  Galileo209    0    8    0    16   8    8    25   21   17   5         108    5   4550400
7501001  Starlette     31   218  252  210  89   143  225  291  295  275       2029   4   4629600
1106002  Galileo102    9    19   6    8    6    4    12   14   14   12        104    5   5289600
8606101  Ajisai        119  355  201  278  209  213  84   315  324  251       2349   4   5970240