NASA will be performing network maintenance on Thursday, July 25, 2024, from 09:00 AM EDT (13:00 UTC) to 11:00 AM EDT (15:00 UTC). The ILRS website and ALL CDDIS services will be unavailable during the maintenance window. If you experience problems outside this window, contact support-cddis@earthdata.nasa.gov.

close window
-->

ILRS Mission Priorities as of February 17, 2010

Priority Mission ILRS
Name		 COSPAR
ID		 SIC Sponsor Altitude
(km)		 Inclination
(degrees)		 Comments
1 GOCE goce 0901301 0499 ESA 295 96.7  
2 ANDE Castor/Pollux andec
andep		 0903806
0903805		 1073
1074		 NRL 350 51.6  
3 GRACE-A/B gracea
graceb		 0201201
0201202		 8003
8004		 GFZ/JPL 485-500 89 tandem mission
4 CHAMP champ 0003902 8002 GFZ 429-474 87.27  
5 TerraSAR-X terrasarx 0702601 6201 Infoterra/ DLR/GFZ/CSR 514 97.44  
6 Envisat envisat 0200901 6179 ESA 796 98.6 tandem with ERS-2
7 ERS-2 ers2 9502101 6178 ESA 800 98.6 tandem with Envisat
8 BLITS blits 0904907 5558 Russia 832 98.77  

9

 Jason-1 jason1 0105501 4378 NASA/CNES 1,350 66.0  
10 Jason-2 jason2 0803201 1025 NASA, CNES, Eumetsat, NOAA 1,336 66.0 tandem with Jason-1
11 Larets larets 0304206 5557 IPIE 691 98.204  
12 Starlette starlette 7501001 1134 CNES 815-1,100 49.8  
13 Stella stella 9306102 0643 CNES 815 98.6  
14 Ajisai ajisai 8606101 1500 JAXA 1,485 50  
15 LAGEOS-2 lageos2 9207002 5986 ASI/NASA 5625 52.6  
16 LAGEOS-1 lageos1 7603901 1155 NASA 5850 109.8  
17 Beacon-C beaconc 6503201 317 NASA 950-1300 41 upgraded from a campaign to
ongoing mission (Jan 2002)
18 Etalon-1 etalon1 8900103 0525 Russia 19,100 65.3  
19 Etalon-2 etalon2 8903903 4146 Russia 19,100 65.2  
20 COMPASS-M1 compassm1 0701101 2001 China 21,500 55.5  
21 GLONASS-115 glonass115 0806702 9115 Russia 19,100 65 replaced GLONASS-99 (31-Mar-2009)
22 GLONASS-109 glonass109 0706503 9109 Russia 19,100 65 replaced GLONASS-95 (28-May-2008)
23 GLONASS-102 glonass102 0606201 9102 Russia 19,100 65 replaced GLONASS-89 (04-May-2007)
24 GPS-35 gps35 9305401 3635 US DoD 20,100 54/2  
25 GPS-36 gps36 9401601 3636 US DoD 20,100 55.0  
26 GIOVE-B gioveb 0802001 7002 ESA 23,916 56  
27 GIOVE-A giovea 0505101 7001 ESA 23,916 56  

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