ILRS Mission Priorities

Priority	Mission	Sponsor	Altitude (km)	Inclination (degrees)	Comments
1	GRACE (A,B)	GFZ/JPL	485-500	89	tandem mission*
2	CHAMP	GFZ	429-474	87.27
3	GFO1	US Navy	790	108.0	altimetry/no other tracking technique
4	ENVISAT	ESA	796	98.6	tandem with ERS-2*
5	ERS2	ESA	800	98.6	tandem with ENVISAT*
6	Jason	NASA/CNES	1,350	66.0	tandem with Topex*
7	TOPEX/ Poseidon	NASA/CNES	1,350	66.0	tandem with Jason*
8	Starlette	CNES	815-1,100	49.8
9	Stella	CNES	815	98.6
10	METEOR-3M	IPIE	1000	99.64	No other tracking technique
11	Beacon C	NASA	950-1300	41	upgraded from a campaign to ongoing mission (Jan 2002)
12	Reflector	IPIE	1,020	99.6
13	Ajisai	NASDA	1,485	50
14	LAGEOS2	ASI/NASA	5625	52.6
15	LAGEOS1	NASA	5850	109.8
16	Etalon1	Russian Federation	19,100	65.3
17	Etalon2	Russian Federation	19,100	65.2
18	GLONASS86	Russian Federation	19,100	65	replaced GLONASS80 as of 20 February 2002
19	GLONASS87	Russian Federation	19,100	65	replaced GLONASS88 as of 20 February 2002
20	GLONASS84	Russian Federation	19,100	65	replaced GLONASS79 as of 22 Feburary 2001
21	GPS35	US DoD	20,100	54.2
22	GPS36	US DoD	20,100	55.0

Lunar Tracking Priorities