ILRS Mission Priorities as of November 03, 2018

The ILRS has ordered its tracking priority list according to satellite orbital parameters and special project needs.Tracking priorities have been ordered as follows:

  • Priorities decrease with:
    • increasing orbital altitude; and
    • increasing orbital inclination (at a given altitude).
  • Priority of some satellites may then be increased to intensify support for:
    • active missions (such as altimetry);
    • special campaigns (such as IGEX 98); or
    • post-launch intensive tracking phases; and
  • Some slight reordering may be done to give higher priority to missions with increased importance to the analysis community.

Stations may adjust priorities to accommodate local conditions such as system capabilities, weather, and special program interests.

Satellite sponsors request for tandem mission, satellites be tracked on alternate passes.

Related Links:

Current Priority List


Priority Mission ILRS
Name
COSPAR
ID
SIC Sponsor Altitude
(km)
Inclination
(degrees)
Comments
1 Tiangong-2 tiangong2 1605701 2207 China Manned Space Engineering Office 350-400 42  
2 GRACE-FO-1/ 2 gracefo1
gracefo2
1804701
1804702
0123
0124
NASA JPL and the German Research Centre for Geosciences (GFZ) 500 89  
3 ICESat-2 icesat2 1807001 6873 NASA 496 92 Restricted tracking; authorization required
4 CryoSat-2 cryosat2 1001301 8006 ESA 450-720 92  
5 PAZ paz 1802001 2501 HISDESAT 514 97.44  
6 TanDEM-X tandemx 1003001 6202 Infoterra/ DLR/GFZ/CSR 514 98 Tandem with TerraSAR-X
7 TerraSAR-X terrasarx 0702601 6201 Infoterra/ DLR/GFZ/CSR 514 97.44 Tandem with TanDEM-X
8 SNET-4 snet4 1801409 6207 Technische Universität Berlin 600 97.6  
9 SNET-3 snet3 1801408 6206 Technische Universität Berlin 600 97.6  
10 SNET-2 snet2 1801407 6205 Technische Universität Berlin 600 97.6  
11 SNET-1 snet1 1801410 6204 Technische Universität Berlin 600 97.6  
12 TechnoSat technosat 1704205 6203 Technische Universität Berlin 600 97.6 - 97.9 degrees ±7.2 arcmin 3-month campaign
13 STSAT-2C stsat2c 1300301 3804 MEST, KAIST 300 - 1500 80  
14 Sentinel-3B sentinel3b 1803901 8011 ESA/EUMETSAT 814.5 98.65

Restricted tracking; authorization required

15 Sentinel-3A sentinel3a 1601101 8010 ESA/EUMETSAT 814.5 98.65

Restricted tracking; authorization required

16 Swarm-A/C swarma
swarmc
1306702
1306703
8007
8009
ESA 460
530
88.35
88.95
 
17 Swarm-B swarmb 1306701 8008 ESA 460 88.35  
18 KOMPSAT-5 kompsat5 1304201 3803 KARI 550 96.7  
19 RadioAstron radioastro 1103701 5559 Lavochkin Association 500-350,000 51.4 Campaign tracking with specific stations
20 SARAL saral 1300901 3201 CNES and ISRO 814 98.55  
21 HY-2B hy2b 1808101 2208 China 971 98.55  
22 HY-2A hy2a 1104301 2201 China 971 99.35  
23 Jason-3 jason3 1600201 4379 NASA, CNES, Eumetsat, NOAA 1,336 66.0  
24 Jason-2 jason2 0803201 1025 NASA, CNES, Eumetsat, NOAA 1,336 66.0  
25 Geo-IK-2 geoik2 1603401 5561 JSC ISS 943.5 - 973.5 99.47  
26 Larets larets 0304206 5557 IPIE 691 98.204  
27 Starlette starlette 7501001 1134 CNES 815-1,100 49.8  
28 Stella stella 9306102 0643 CNES 815 98.6  
29 LARES lares 1200601 5987 ASI 1,450 69.5  
30 LAGEOS-2 lageos2 9207002 5986 ASI/NASA 5,625 52.6  
31 LAGEOS-1 lageos1 7603901 1155 NASA 5,850 109.8  
32 Etalon-1 etalon1 8900103 0525 Russia 19,100 65.3  
33 Etalon-2 etalon2 8903903 4146 Russia 19,100 65.2  
34 Ajisai ajisai 8606101 1500 JAXA 1,485 50  
35 GLONASS-131 glonass131 1301901 9131 Russia 19,140 65  
36 Galileo-102 galileo102 1106002 7102 ESA 23,220 56  
37 COMPASS-I3 compassi3 1101301 2003 China 35,790.2 55.6  
38 GLONASS-134 glonass134 1407501 9134 Russia 19,140 65  
39 Galileo-202 galileo202 1405002 7202 ESA 23,220 56  
40 COMPASS-M3 compassm3 1201801 2004 China 21,528 55.0  
41 GLONASS-136 glonass136 1603201 9136 Russia 19,140 65  
42 Galileo-209 galileo209 1507901 7209 ESA 23,220 56  
43 BeiDou-3M3 beidou3m3 1801802 2015 China Satellite Navigation Engineering Center 21,500 55  
44 GLONASS-137 glonass137 1705501 9137 Russia 19,140 65  
45 Galileo-210 galileo210 1603002 7210 ESA 23,220 56  
46 BeiDou-3M2 beidou3m2 1706902 2014 China Satellite Navigation Engineering Center 21,500 55  
47 Galileo-219 galileo219 1806003 7219 ESA 23,220 56  
48 BeiDou-3M9 beidou3m9 1802901 2019 China Satellite Navigation Engineering Center 21,500 55  
49 Galileo-220 galileo220 1806004 7220 ESA 23,220 56  
50 BeiDou-3M10 beidou3m10 1802902 2020 China Satellite Navigation Engineering Center 21,500 55  
51 Galileo-221 galileo221 1806001 7221 ESA 23,220 56 +/- 2 deg  
52 COMPASS-I5 compassi5 1107301 2005 China 35,790.2 55.5  
53 Galileo-213 galileo213 1606903 7213 ESA 23,220 56 +/- 2 deg  
54 COMPASS-I6B compassib6 1602101 2012 China 35,677 55.0  
55 IRNSS-1B irnss1b 1401701 3302 ISRO 42,293 31  
56 QZS-3 qzs3 1704801 1583 Cabinet Office, Government of Japan 36,000 0  
57 QZS-2 qzs2 1702801 1582 Cabinet Office, Government of Japan 32,000-40,000 km 45  
58 QZS-4 qzs4 1706201 1584 Cabinet Office, Government of Japan 32,000-40,000 km 45  
59 GLONASS-128 glonass128 1106401 9128 Russia 19,100 65  
60 GLONASS-132 glonass132 1401201 9132 Russia 19,140 65  
61 GLONASS-133 glonass133 1403201 9133 Russia 19,100 65  
62 GLONASS-135 glonass135 1600801 9135 Russia 19,140 65  
63 IRNSS-1I irnss1i 1803501 3309 ISRO 35,786 29  
64 IRNSS-1F irnss1f 1601501 3306 ISRO 35,786 29  
65 IRNSS-1E irnss1e 1600301 3305 ISRO 35,786 29  
66 IRNSS-1D irnss1d 1501801 3304 ISRO 42,293 30.5  
67 IRNSS-1C irnss1c 1406101 3303 ISRO 42,293 5  
68 QZS-1 qzs1 1004501 1581 Cabinet Office, Government of Japan 32,000-40,000 45  
69 Beacon-C beaconc 6503201 0317 NASA 950-1300 41  

Lunar Tracking Priorities

Priority Retroreflector Array ILRS
Name
COSPAR
ID
SIC Sponsor Altitude(km)
1 Apollo15 apollo15 0000103 N/A NASA 356,400
2 Apollo11 apollo11 0000100 N/A NASA 356,400
3 Apollo14 apollo14 0000102 N/A NASA 356,400
4 Luna21 luna21 0000101 N/A Russian Federation 356,400
5 Luna17 luna17 0000104 N/A Russian Federation 356,400