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Orbits


Tyneside, UK
2021 Jan 25
Monday, Day 25

Maintained by:

















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Geosynchronous Satellites - US Government and Military

This a list of satellites mainly in the series of named 'USA xxx' or carrying the predecessor 'OPS' designations. It is in alphabetical order of the actual programme supported.

This page is a snapshot and is updated frequently. The more inclined or eccentric the orbit, the larger the error margin of the geosynchronous location. Even the worst case should, however, be within ±3 degrees of reality. Only satellites exhibiting less than 0.25° per day of drift are included.

Appearance in this list does not mean that the satellite is operational or under control at its location. Some older, non-working, satellites have drifted to 'wells' in the Earth's gravitational field and oscillate around that location.


Longi-
tude (°)
Satellite Cat
no
Desig- nation Orbit
Epoch
Orbit
134.1 eastUSA 283433392018-036A2021 Jan 2235783 x 35791 km, 1436.1 min, 0°.0
4.0 eastUSA 214 (AEHF 1)368682010-039A2021 Jan 2435780 x 35792 km, 1436.1 min, 3°.3
67.5 westUSA 235 (AEHF 2)382542012-019A2021 Jan 2435781 x 35792 km, 1436.1 min, 2°.4
111.1 eastUSA 246 (AEHF 3)392562013-050A2021 Jan 2435762 x 35813 km, 1436.1 min, 0°.7
150.0 westUSA 288 (AEHF 4)436512018-079A2021 Jan 2435777 x 35798 km, 1436.1 min, 3°.4
54.6 eastUSA 292 (AEHF 5)444812019-051A2021 Jan 2435767 x 35803 km, 1436.0 min, 5°.5
94.2 westUSA 298 (AEHF 6)454652020-022B2021 Jan 2435769 x 35804 km, 1436.1 min, 7°.1
24.2 westOPS 4258 (Aquacade 3)105081977-114A2020 Sep 2135719 x 35864 km, 1436.3 min, 15°.2
128.6 eastUSA 257 (CLIO)402082014-055A2020 Jun 2835721 x 35847 km, 1436.0 min, 0°.1
38.9 westOPS 7329 (Canyon 3)45101970-069A2021 Jan 2431932 x 39670 km, 1436.8 min, 11°.0
81.5 eastUSA 37 (Chalet 6)199761989-035A2020 Jun 3031704 x 39870 km, 1436.1 min, 7°.9
99.6 westOPS 9431 (DSCS II A-1)55871971-095A2021 Jan 2435773 x 35797 km, 1436.0 min, 6°.6
103.8 eastUSA 113 (DSCS III F-9)236281995-038A2021 Jan 2435779 x 35796 km, 1436.1 min, 11°.6
111.7 westUSA 135 (DSCS III F-10)250191997-065A2021 Jan 2435757 x 35815 km, 1436.1 min, 10°.5
179.6 westUSA 148 (DSCS III F-11)260522000-001A2021 Jan 2435779 x 35795 km, 1436.1 min, 8°.7
134.2 eastUSA 153 (DSCS III F-12)265752000-065A2021 Jan 2435780 x 35797 km, 1436.2 min, 8°.3
130.1 westUSA 167 (DSCS III F-13)276912003-008A2021 Jan 2435777 x 35797 km, 1436.1 min, 7°.1
42.4 westUSA 170 (DSCS III F-14)278752003-040A2021 Jan 2435782 x 35794 km, 1436.1 min, 6°.3
96.7 westUSA 107 (DSP F-17)234351994-084A2021 Jan 2435784 x 35791 km, 1436.1 min, 14°.6
8.1 eastUSA 130 (DSP F-19)247371997-008A2021 Jan 2435782 x 35793 km, 1436.1 min, 13°.7
165.0 westUSA 149 (DSP F-20)263562000-024A2021 Jan 2435784 x 35797 km, 1436.3 min, 11°.7
49.1 westUSA 159 (DSP F-21)268802001-033A2021 Jan 2435786 x 35789 km, 1436.1 min, 11°.0
87.4 eastUSA 176 (DSP F-22)281582004-004A2021 Jan 2435784 x 35790 km, 1436.1 min, 9°.4
21.7 westOPS 6393 (FltSatCom F-3)116691980-004A2021 Jan 2435690 x 35881 km, 1436.1 min, 10°.2
71.9 eastUSA 46 (FltSatCom F-8)202531989-077A2021 Jan 2435777 x 35796 km, 1436.1 min, 13°.0
59.7 eastUSA 270 (GSSAP 3)417442016-052A2021 Jan 1235765 x 35806 km, 1436.1 min, 0°.2
126.4 eastUSA 110 (Mentor 1/Advanced Orion 1)235671995-022A2021 Jan 1735652 x 35922 km, 1436.1 min, 15°.1
26.7 westUSA 139 (Mentor 2/Advanced Orion 2)253361998-029A2020 Sep 2135617 x 35958 km, 1436.1 min, 8°.4
67.7 eastUSA 171 (Mentor 3/Advanced Orion 3)279372003-041A2020 Jul 235586 x 35988 km, 1436.1 min, 11°.4
44.0 eastUSA 202 (Mentor 4/Advanced Orion 4)334902009-001A2020 Nov 2035754 x 35817 km, 1436.0 min, 6°.0
96.2 eastUSA 223 (Mentor 5/Advanced Orion 5)372322010-063A2021 Jan 1235602 x 35972 km, 1436.1 min, 4°.6
52.5 eastUSA 237 (Mentor 6/Advanced Orion 6)385282012-034A2020 Nov 1935620 x 35954 km, 1436.1 min, 2°.7
105.4 eastUSA 268 (Mentor 7/Advanced Orion 7)415842016-036A2021 Jan 1335587 x 35987 km, 1436.1 min, 6°.5
43.6 eastUSA 105 (Mercury 1)232231994-054A2020 Mar 2635676 x 35898 km, 1436.1 min, 11°.9
47.8 eastUSA 118 (Mercury 2)238551996-026A2020 Nov 2034189 x 37386 km, 1436.1 min, 9°.0
90.0 westUSA 99 (Milstar 1 DFS)229881994-009A2021 Jan 2435779 x 35795 km, 1436.1 min, 14°.5
120.0 westUSA 115 (Milstar 2 DFS)237121995-060A2021 Jan 2435774 x 35799 km, 1436.1 min, 13°.3
19.0 eastUSA 164 (Milstar 5)271682002-001A2021 Jan 2435774 x 35797 km, 1436.0 min, 9°.0
152.1 eastUSA 169 (Milstar 6)277112003-012A2021 Jan 2435774 x 35800 km, 1436.1 min, 9°.4
100.0 westMUOS 1 (Mobile User Objective System 1)380932012-009A2021 Jan 2435549 x 36024 km, 1436.1 min, 2°.6
177.0 westMUOS 2 (Mobile User Objective System 2)392062013-036A2021 Jan 2435564 x 36009 km, 1436.1 min, 2°.5
15.4 westMUOS 3 (Mobile User Objective System 3)403742015-002A2021 Jan 2435565 x 36008 km, 1436.1 min, 2°.7
75.0 eastMUOS 4 (Mobile User Objective System 4)408872015-044A2021 Jan 2435542 x 36031 km, 1436.1 min, 2°.8
105.0 westMUOS 5 (Mobile User Objective System 5)416222016-041A2021 Jan 2434954 x 36619 km, 1436.1 min, 6°.8
47.7 eastUSA 207 (PAN)358152009-047A2020 Nov 2035752 x 35822 km, 1436.1 min, 0°.1
85.2 eastOPS 5346 (Rhyolite 1)44181970-046A2020 Jun 2435755 x 35823 km, 1436.2 min, 3°.3
74.3 eastOPS 6063 (Rhyolite 2)63801973-013A2021 Jan 2435712 x 35863 km, 1436.1 min, 5°.3
66.2 eastUSA 230 (SBIRS GEO 1)374812011-019A2021 Jan 2435779 x 35794 km, 1436.1 min, 1°.9
20.6 eastUSA 241 (SBIRS GEO 2)391202013-011A2021 Jan 2435779 x 35794 km, 1436.1 min, 1°.9
159.4 westUSA 273 (SBIRS GEO 3)419372017-004A2021 Jan 2435779 x 35795 km, 1436.1 min, 3°.3
139.0 eastUSA 282 (SBIRS GEO 4)431622018-009A2021 Jan 2435778 x 35795 km, 1436.1 min, 4°.5
110.1 eastUSA 155 (SDS-3 F-1)266352000-080A2021 Jan 1335726 x 35847 km, 1436.1 min, 9°.3
100.0 eastUSA 162 (SDS-3 F-2)269482001-046A2020 Jun 2435778 x 35796 km, 1436.1 min, 10°.9
141.1 westUSA 227 (SDS-3 F-5)373772011-011A2020 Nov 2135771 x 35803 km, 1436.1 min, 4°.6
23.9 westUSA 236 (SDS-3 F-6)384662012-033A2020 Sep 2135755 x 35819 km, 1436.1 min, 2°.7
91.9 eastUSA 279 (SDS-4 F1?)429492017-066A2021 Jan 1335771 x 35803 km, 1436.1 min, 3°.2
170.0 eastUSA 252 (SDS [-3 F-7?] )397512014-027A2020 Jun 1735771 x 35803 km, 1436.1 min, 2°.7
10.1 westUSA 269 (SDS [-3 F-8?])417242016-047A2020 Nov 2035768 x 35806 km, 1436.1 min, 3°.0
82.1 eastUSA 250 (SIGINT?)396522014-020A2020 Sep 1435770 x 35804 km, 1436.1 min, 1°.4
28.7 eastUSA 95 (UFO F-2)227871993-056A2021 Jan 2435756 x 35816 km, 1436.1 min, 11°.3
13.6 westUSA 104 (UFO F-3)231321994-035A2021 Jan 2435769 x 35801 km, 1436.0 min, 11°.6
172.2 eastUSA 108 (UFO F-4)234671995-003A2021 Jan 2435774 x 35797 km, 1436.0 min, 9°.8
32.7 westUSA 127 (UFO F-7)239671996-042A2021 Jan 2435744 x 35810 km, 1435.6 min, 9°.4
171.6 eastUSA 138 (UFO F-8)252581998-016A2021 Jan 2435769 x 35803 km, 1436.0 min, 8°.9
22.7 westUSA 146 (UFO F-10)259671999-063A2021 Jan 2435774 x 35801 km, 1436.2 min, 8°.1
75.3 eastUSA 174 (UFO F-11)281172003-057A2021 Jan 2435768 x 35806 km, 1436.1 min, 6°.3
6.0 eastUSA 195 (Wideband Global SATCOM 1)322582007-046A2021 Jan 2435785 x 35788 km, 1436.1 min, 0°.0
57.5 eastUSA 204 (Wideband Global SATCOM 2)347132009-017A2021 Jan 2435783 x 35789 km, 1436.1 min, 0°.1
12.0 westUSA 211 (Wideband Global SATCOM 3)361082009-068A2021 Jan 2435784 x 35788 km, 1436.1 min, 0°.0
88.4 eastUSA 233 (Wideband Global SATCOM 4)380702012-003A2021 Jan 2435784 x 35788 km, 1436.1 min, 0°.0
52.5 westUSA 243 (Wideband Global SATCOM 5)391682013-024A2021 Jan 2435785 x 35788 km, 1436.1 min, 0°.0
135.2 westUSA 244 (Wideband Global SATCOM 6)392222013-041A2021 Jan 2435785 x 35790 km, 1436.1 min, 0°.0
175.0 eastUSA 263 (Wideband Global SATCOM 7)407462015-036A2021 Jan 2435785 x 35787 km, 1436.1 min, 0°.0
149.8 eastUSA 272 (Wideband Global SATCOM 8)418792016-075A2021 Jan 2435786 x 35787 km, 1436.1 min, 0°.0
56.8 eastUSA 275 (Wideband Global SATCOM 9)420752017-016A2021 Jan 2435785 x 35787 km, 1436.1 min, 0°.0
60.3 eastUSA 291 (Wideband Global SATCOM 10)440712019-014A2021 Jan 2435785 x 35788 km, 1436.1 min, 0°.1

For the satellites that do not have formal published elements, thanks go to the radio and visual amateur satellite trackers for observing, and particularly to Mike McCants for archiving the derived orbits.

Classified - updated: 2021 Jan 23
SpaceTrack - updated: 2021 Jan 25
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