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ILRS Mission Priorities as of June 8, 2021

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

Restricted tracking; authorization required
12 Sentinel-3A sentinel3a 1601101 8010 ESA/EUMETSAT 814.5 98.65

Restricted tracking; authorization required
13 Swarm-A/C swarma
swarmc		 1306702
1306703		 8007
8009		 ESA 460
530		 88.35
88.95		  
14 Swarm-B swarmb 1306701 8008 ESA 460 88.35  
15 KOMPSAT-5 kompsat5 1304201 3803 KARI 550 96.7  
16 SARAL saral 1300901 3201 CNES and ISRO 814 98.55  
17 HY-2D hy2d 2104301 2211 China 971 66  
18 HY-2C hy2c 2006601 2209 China 957 66  
19 HY-2B hy2b 1808101 2208 China 971 98.55  
20 Sentinel-6A/Jason-CSA sentinel6a 2008601 4380 NASA, ESA, EUMETSAT, NOAA, CNES 1339.4-1355.9 66.042  
21 Jason-3 jason3 1600201 4379 NASA, CNES, Eumetsat, NOAA 1,336 66.0  
22 Geo-IK-2 geoik2 1603401 5561 JSC ISS 943.5 - 973.5 99.47  
23 Larets larets 0304206 5557 IPIE 691 98.204  
24 Starlette starlette 7501001 1134 CNES 815-1,100 49.8  
25 Stella stella 9306102 0643 CNES 815 98.6  
26 LARES lares 1200601 5987 ASI 1,450 69.5  
27 LAGEOS-2 lageos2 9207002 5986 ASI/NASA 5,625 52.6  
28 LAGEOS-1 lageos1 7603901 1155 NASA 5,850 109.8  
29 Etalon-1 etalon1 8900103 0525 Russia 19,100 65.3  
30 Etalon-2 etalon2 8903903 4146 Russia 19,100 65.2  
31 Ajisai ajisai 8606101 1500 JAXA 1,485 50  
32 GLONASS-131 glonass131 1301901 9131 Russia 19,140 65  
33 Galileo-102 galileo102 1106002 7102 ESA 23,220 56  
34 BeiDou-3M2 beidou3m2 1706902 2014 China Satellite Navigation Engineering Center 21,500 55  
35 GLONASS-134 glonass134 1407501 9134 Russia 19,140 65  
36 Galileo-202 galileo202 1405002 7202 ESA 23,220 56  
37 BeiDou-3M3 beidou3m3 1801802 2015 China Satellite Navigation Engineering Center 21,500 55  
38 GLONASS-138 glonass138 1805301 9138 Russia 19,140 65  
39 Galileo-209 galileo209 1507901 7209 ESA 23,220 56  
40 BeiDou-3M9 beidou3m9 1802901 2019 China Satellite Navigation Engineering Center 21,500 55  
41 GLONASS-139 glonass139 1808601 9139 Russia 19,140 65  
42 Galileo-210 galileo210 1603002 7210 ESA 23,220 56  
43 BeiDou-3M10 beidou3m10 1802902 2020 China Satellite Navigation Engineering Center 21,500 55  
44 IRNSS-1B irnss1b 1401701 3302 ISRO 42,293 31  
45 QZS-3 qzs3 1704801 1583 Cabinet Office, Government of Japan 36,000 0  
46 QZS-2 qzs2 1702801 1582 Cabinet Office, Government of Japan 32,000-40,000 km 45  
47 QZS-4 qzs4 1706201 1584 Cabinet Office, Government of Japan 32,000-40,000 km 45  
48 IRNSS-1I irnss1i 1803501 3309 ISRO 35,786 29  
49 IRNSS-1F irnss1f 1601501 3306 ISRO 35,786 29  
50 IRNSS-1E irnss1e 1600301 3305 ISRO 35,786 29  
51 IRNSS-1D irnss1d 1501801 3304 ISRO 42,293 30.5  
52 IRNSS-1C irnss1c 1406101 3303 ISRO 42,293 5  
53 QZS-1 qzs1 1004501 1581 Cabinet Office, Government of Japan 32,000-40,000 45  
54 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