Orbital Focus - International Spaceflight Facts and Figures
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Orbits


Tyneside, UK
2022 Dec 4
Sunday, Day 338

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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 order of geographical location round the equator.

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
10.0 westUSA 269 (SDS [-3 F-8?])417242016-047A2022 Feb 2835777 x 35797 km, 1436.1 min, 2°.5
12.0 westUSA 275 (Wideband Global SATCOM 9)420752017-016A2022 Dec 235785 x 35788 km, 1436.1 min, 0°.0
15.5 westMUOS 3 (Mobile User Objective System 3)403742015-002A2022 Dec 235542 x 36032 km, 1436.1 min, 2°.6
22.8 westUSA 146 (UFO F-10)259671999-063A2022 Dec 235769 x 35805 km, 1436.1 min, 8°.9
24.0 westUSA 236 (SDS-3 F-6)384662012-033A2022 Feb 2835754 x 35820 km, 1436.1 min, 4°.0
24.2 westOPS 4258 (Aquacade 3)105081977-114A2020 Sep 2235719 x 35864 km, 1436.3 min, 15°.2
25.9 westOPS 0441 (Vortex 4)146751984-009A2021 May 731563 x 40033 km, 1436.7 min, 6°.3
26.9 westUSA 139 (Mentor 2/Advanced Orion 2)253361998-029A2022 Feb 2835610 x 35964 km, 1436.1 min, 8°.0
38.0 westUSA 241 (SBIRS GEO 2)391202013-011A2022 Dec 235775 x 35798 km, 1436.1 min, 2°.1
42.3 westUSA 170 (DSCS III F-14)278752003-040A2022 Dec 235772 x 35804 km, 1436.2 min, 7°.7
49.1 westUSA 159 (DSP F-21)268802001-033A2022 Dec 235783 x 35789 km, 1436.1 min, 11°.6
49.6 westOPS 4029 (Vortex 3)129301981-107A2021 May 732111 x 39487 km, 1436.7 min, 6°.6
52.5 westUSA 243 (Wideband Global SATCOM 5)391682013-024A2022 Dec 235785 x 35788 km, 1436.1 min, 0°.0
67.5 westUSA 288 (AEHF 4)436512018-079A2022 Dec 235770 x 35803 km, 1436.1 min, 2°.2
90.0 westUSA 99 (Milstar 1 DFS)229881994-009A2022 Dec 235769 x 35803 km, 1436.1 min, 15°.6
94.2 westUSA 235 (AEHF 2)382542012-019A2022 Dec 335771 x 35803 km, 1436.1 min, 3°.7
96.7 westUSA 107 (DSP F-17)234351994-084A2022 Dec 235780 x 35791 km, 1436.0 min, 14°.6
100.0 westMUOS 1 (Mobile User Objective System 1)380932012-009A2022 Dec 235569 x 36003 km, 1436.1 min, 3°.1
105.0 westMUOS 5 (Mobile User Objective System 5)416222016-041A2022 Dec 234949 x 36625 km, 1436.1 min, 5°.2
108.7 westOPS 9431 (DSCS II A-1)55871971-095A2022 Dec 235767 x 35800 km, 1435.9 min, 4°.9
111.6 westSTPSat 6 (Space Test Program Satellite)498172021-118A2022 Dec 235780 x 35793 km, 1436.1 min, 0°.0
112.4 westUSA 135 (DSCS III F-10)250191997-065A2022 Dec 235777 x 35796 km, 1436.1 min, 11°.2
120.1 westUSA 115 (Milstar 2 DFS)237121995-060A2022 Dec 335773 x 35800 km, 1436.1 min, 13°.6
124.2 westUSA 157 (Milstar 4)267152001-009A2022 Dec 235768 x 35803 km, 1436.1 min, 10°.2
129.9 westUSA 167 (DSCS III F-13)276912003-008A2022 Dec 235782 x 35794 km, 1436.2 min, 8°.4
135.2 westUSA 244 (Wideband Global SATCOM 6)392222013-041A2022 Dec 235786 x 35791 km, 1436.2 min, 0°.0
141.1 westUSA 227 (SDS-3 F-5)373772011-011A2020 Nov 2135771 x 35803 km, 1436.1 min, 4°.6
145.0 westUSA 336 (SBIRS GEO 6)533552022-092A2022 Dec 235772 x 35801 km, 1436.1 min, 6°.4
155.0 westUSA 246 (AEHF 3)392562013-050A2022 Dec 235537 x 36034 km, 1436.0 min, 2°.1
159.4 westUSA 273 (SBIRS GEO 3)419372017-004A2022 Dec 235776 x 35797 km, 1436.1 min, 2°.0
164.6 westUSA 149 (DSP F-20)263562000-024A2022 Dec 235786 x 35796 km, 1436.3 min, 12°.2
167.1 westUSA 138 (UFO F-8)252581998-016A2022 Dec 235761 x 35779 km, 1435.2 min, 9°.6
168.6 westOPS 6393 (FltSatCom F-3)116691980-004A2022 Dec 235692 x 35904 km, 1436.7 min, 8°.9
169.8 westOPS 7329 (Canyon 3)45101970-069A2022 Dec 231670 x 39881 km, 1435.5 min, 10°.5
177.0 westMUOS 2 (Mobile User Objective System 2)392062013-036A2022 Dec 235555 x 36017 km, 1436.1 min, 2°.8
179.8 westUSA 148 (DSCS III F-11)260522000-001A2022 Dec 235778 x 35797 km, 1436.1 min, 9°.8
175.0 eastUSA 263 (Wideband Global SATCOM 7)407462015-036A2022 Dec 235785 x 35788 km, 1436.1 min, 0°.0
172.3 eastUSA 108 (UFO F-4)234671995-003A2022 Dec 235774 x 35798 km, 1436.1 min, 9°.8
170.0 eastUSA 252 (SDS [-3 F-7?] )397512014-027A2020 Jun 1735771 x 35803 km, 1436.1 min, 2°.7
152.1 eastUSA 169 (Milstar 6)277112003-012A2022 Dec 235771 x 35801 km, 1436.1 min, 10°.4
149.8 eastUSA 272 (Wideband Global SATCOM 8)418792016-075A2022 Dec 235787 x 35787 km, 1436.1 min, 0°.0
141.7 eastUSA 270 (GSSAP 3)417442016-052A2022 Dec 135771 x 35776 km, 1435.4 min, 0°.9
139.0 eastUSA 282 (SBIRS GEO 4)431622018-009A2022 Dec 235776 x 35797 km, 1436.1 min, 3°.2
137.8 eastUSA 298 (AEHF 6)454652020-022B2022 Dec 235575 x 35997 km, 1436.1 min, 5°.6
134.5 eastUSA 153 (DSCS III F-12)265752000-065A2022 Dec 235777 x 35796 km, 1436.1 min, 9°.4
134.1 eastUSA 283 (Continuous Broadcast Augmenting SATCOM)433392018-036A2022 Dec 235784 x 35790 km, 1436.1 min, 0°.0
128.6 eastUSA 257 (CLIO)402082014-055A2020 Jun 2835721 x 35847 km, 1436.0 min, 0°.1
126.4 eastUSA 110 (Mentor 1/Advanced Orion 1)235671995-022A2021 Jan 1735652 x 35922 km, 1436.1 min, 15°.1
119.2 eastUSA 332 (Wide Field of View Testbed)529402022-073A2022 Dec 235773 x 35799 km, 1436.1 min, 0°.4
110.1 eastUSA 155 (SDS-3 F-1)266352000-080A2021 Jan 1335726 x 35847 km, 1436.1 min, 9°.3
105.5 eastUSA 268 (Mentor 7/Advanced Orion 7)415842016-036A2021 Sep 735580 x 35995 km, 1436.1 min, 6°.3
100.0 eastUSA 162 (SDS-3 F-2)269482001-046A2020 Jun 2435778 x 35796 km, 1436.1 min, 10°.9
95.5 eastUSA 223 (Mentor 5/Advanced Orion 5)372322010-063A2021 Sep 735643 x 35931 km, 1436.1 min, 5°.1
92.1 eastUSA 279 (SDS-4 F1?)429492017-066A2021 Sep 635771 x 35804 km, 1436.1 min, 2°.8
88.4 eastUSA 233 (Wideband Global SATCOM 4)380702012-003A2022 Dec 235785 x 35788 km, 1436.1 min, 0°.0
87.3 eastUSA 176 (DSP F-22)281582004-004A2022 Dec 235781 x 35793 km, 1436.1 min, 10°.3
83.7 eastUSA 37 (Chalet 6)199761989-035A2022 Aug 2331806 x 39768 km, 1436.1 min, 7°.8
82.1 eastUSA 250 (SIGINT?)396522014-020A2022 Sep 2135755 x 35819 km, 1436.1 min, 2°.2
75.1 eastOPS 6063 (Rhyolite 2)63801973-013A2022 Dec 235693 x 35882 km, 1436.2 min, 3°.7
75.0 eastMUOS 4 (Mobile User Objective System 4)408872015-044A2022 Dec 235572 x 36001 km, 1436.1 min, 2°.6
74.9 eastUSA 174 (UFO F-11)281172003-057A2022 Dec 235782 x 35790 km, 1436.1 min, 7°.2
71.9 eastUSA 46 (FltSatCom F-8)202531989-077A2022 Dec 235770 x 35803 km, 1436.1 min, 12°.8
67.7 eastUSA 171 (Mentor 3/Advanced Orion 3)279372003-041A2022 Sep 2035617 x 35958 km, 1436.1 min, 12°.7
66.2 eastUSA 230 (SBIRS GEO 1)374812011-019A2022 Dec 235777 x 35797 km, 1436.1 min, 2°.1
64.8 eastOPS 5346 (Rhyolite 1)44181970-046A2021 Jun 135746 x 35832 km, 1436.2 min, 2°.5
60.3 eastUSA 291 (Wideband Global SATCOM 10)440712019-014A2022 Dec 235787 x 35788 km, 1436.1 min, 0°.0
57.5 eastUSA 204 (Wideband Global SATCOM 2)347132009-017A2022 Dec 235787 x 35788 km, 1436.1 min, 0°.0
55.7 eastUSA 237 (Mentor 6/Advanced Orion 6)385282012-034A2022 Oct 435711 x 35863 km, 1436.1 min, 4°.1
54.6 eastUSA 292 (AEHF 5)444812019-051A2022 Dec 235579 x 35996 km, 1436.1 min, 3°.9
50.7 eastUSA 311 (Mentor 8/Advanced Orion 8)472372019-095A2022 Oct 335574 x 36001 km, 1436.1 min, 6°.5
49.9 eastUSA 118 (Mercury 2)238551996-026A2022 Oct 434271 x 37304 km, 1436.1 min, 8°.6
49.8 eastUSA 207 (PAN)358152009-047A2022 Oct 2035716 x 35874 km, 1436.5 min, 0°.0
44.1 eastUSA 202 (Mentor 4/Advanced Orion 4)334902009-001A2022 Sep 2035743 x 35831 km, 1436.1 min, 6°.8
42.2 eastUSA 105 (Mercury 1)232231994-054A2022 Sep 2035642 x 35933 km, 1436.1 min, 12°.5
28.7 eastUSA 95 (UFO F-2)227871993-056A2022 Dec 235763 x 35809 km, 1436.1 min, 11°.5
20.9 eastUSA 315 (SBIRS GEO 5)486182021-042A2022 Dec 235776 x 35797 km, 1436.1 min, 7°.1
19.0 eastUSA 164 (Milstar 5)271682002-001A2022 Dec 235776 x 35799 km, 1436.1 min, 9°.7
10.4 eastOPS 4966 (Canyon 6)79631975-055A2020 Jan 1930029 x 41530 km, 1435.7 min, 16°.2
6.0 eastUSA 195 (Wideband Global SATCOM 1)322582007-046A2022 Dec 235785 x 35789 km, 1436.1 min, 0°.0
4.1 eastUSA 214 (AEHF 1)368682010-039A2022 Dec 335776 x 35800 km, 1436.2 min, 5°.0

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

Updated: 2022 Dec 3, 06:48 UTC

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