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Orbits


Tyneside, UK
2021 Jul 31
Saturday, Day 212

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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
10.8 westUSA 104 (UFO F-3)231321994-035A2021 Jul 3035770 x 35801 km, 1436.0 min, 11°.7
12.0 westUSA 275 (Wideband Global SATCOM 9)420752017-016A2021 Jul 3035784 x 35788 km, 1436.1 min, 0°.0
15.5 westMUOS 3 (Mobile User Objective System 3)403742015-002A2021 Jul 3035543 x 36030 km, 1436.1 min, 2°.6
22.3 westUSA 127 (UFO F-7)239671996-042A2021 Jul 3035743 x 35831 km, 1436.1 min, 9°.5
22.8 westUSA 146 (UFO F-10)259671999-063A2021 Jul 3035763 x 35812 km, 1436.1 min, 8°.3
29.7 westOPS 6393 (FltSatCom F-3)116691980-004A2021 Jul 3035686 x 35903 km, 1436.5 min, 9°.8
42.5 westUSA 170 (DSCS III F-14)278752003-040A2021 Jul 3035766 x 35809 km, 1436.2 min, 6°.7
49.4 westUSA 159 (DSP F-21)268802001-033A2021 Jul 3035778 x 35790 km, 1436.0 min, 11°.1
51.0 westUSA 311 (Mentor 8/Advanced Orion 8)472372019-095A2020 Jan 535610 x 35949 km, 1435.7 min, 7°.9
52.5 westUSA 243 (Wideband Global SATCOM 5)391682013-024A2021 Jul 3035785 x 35788 km, 1436.1 min, 0°.0
67.6 westUSA 235 (AEHF 2)382542012-019A2021 Jul 3035751 x 35825 km, 1436.2 min, 2°.7
90.0 westUSA 99 (Milstar 1 DFS)229881994-009A2021 Jul 3035771 x 35801 km, 1436.1 min, 14°.8
96.5 westUSA 107 (DSP F-17)234351994-084A2021 Jul 3035775 x 35796 km, 1436.0 min, 14°.6
100.0 westMUOS 1 (Mobile User Objective System 1)380932012-009A2021 Jul 3035559 x 36014 km, 1436.1 min, 2°.6
100.4 westOPS 9431 (DSCS II A-1)55871971-095A2021 Jul 3035777 x 35800 km, 1436.2 min, 6°.1
105.0 westMUOS 5 (Mobile User Objective System 5)416222016-041A2021 Jul 3034930 x 36643 km, 1436.1 min, 6°.4
112.4 westUSA 135 (DSCS III F-10)250191997-065A2021 Jul 3035771 x 35801 km, 1436.1 min, 10°.7
120.0 westUSA 115 (Milstar 2 DFS)237121995-060A2021 Jul 3035774 x 35800 km, 1436.1 min, 13°.4
121.9 westUSA 211 (Wideband Global SATCOM 3)361082009-068A2021 Jul 3035785 x 35791 km, 1436.2 min, 0°.1
124.1 westUSA 157 (Milstar 4)267152001-009A2021 Jul 3035780 x 35796 km, 1436.2 min, 9°.7
130.2 westUSA 167 (DSCS III F-13)276912003-008A2021 Jul 3035771 x 35802 km, 1436.1 min, 7°.4
135.2 westUSA 244 (Wideband Global SATCOM 6)392222013-041A2021 Jul 3035787 x 35789 km, 1436.2 min, 0°.0
150.1 westUSA 288 (AEHF 4)436512018-079A2021 Jul 3035755 x 35816 km, 1436.0 min, 3°.1
159.4 westUSA 273 (SBIRS GEO 3)419372017-004A2021 Jul 3035776 x 35796 km, 1436.1 min, 3°.0
165.3 westUSA 149 (DSP F-20)263562000-024A2021 Jul 3035777 x 35802 km, 1436.2 min, 11°.8
177.0 westMUOS 2 (Mobile User Objective System 2)392062013-036A2021 Jul 3035548 x 36025 km, 1436.1 min, 2°.5
179.7 westUSA 148 (DSCS III F-11)260522000-001A2021 Jul 3035777 x 35795 km, 1436.1 min, 9°.0
179.7 eastOPS 9432 (DSCS II A-2)55881971-095B2021 Jul 3035783 x 35806 km, 1436.5 min, 6°.1
175.0 eastUSA 263 (Wideband Global SATCOM 7)407462015-036A2021 Jul 3035785 x 35788 km, 1436.1 min, 0°.0
172.3 eastUSA 108 (UFO F-4)234671995-003A2021 Jul 3035756 x 35816 km, 1436.1 min, 9°.8
171.7 eastUSA 138 (UFO F-8)252581998-016A2021 Jul 3035770 x 35804 km, 1436.1 min, 9°.1
152.2 eastUSA 169 (Milstar 6)277112003-012A2021 Jul 3035776 x 35797 km, 1436.1 min, 9°.6
149.8 eastUSA 272 (Wideband Global SATCOM 8)418792016-075A2021 Jul 3035785 x 35788 km, 1436.1 min, 0°.0
139.0 eastUSA 282 (SBIRS GEO 4)431622018-009A2021 Jul 3035776 x 35797 km, 1436.1 min, 4°.2
134.3 eastUSA 153 (DSCS III F-12)265752000-065A2021 Jul 3035778 x 35791 km, 1436.0 min, 8°.6
134.1 eastUSA 283433392018-036A2021 Jul 3035784 x 35793 km, 1436.2 min, 0°.0
103.7 eastUSA 113 (DSCS III F-9)236281995-038A2021 Jul 3035779 x 35791 km, 1436.0 min, 11°.8
88.4 eastUSA 233 (Wideband Global SATCOM 4)380702012-003A2021 Jul 3035785 x 35788 km, 1436.1 min, 0°.0
87.4 eastUSA 176 (DSP F-22)281582004-004A2021 Jul 2935781 x 35792 km, 1436.1 min, 9°.7
75.0 eastMUOS 4 (Mobile User Objective System 4)408872015-044A2021 Jul 3035569 x 36004 km, 1436.1 min, 2°.6
74.6 eastUSA 174 (UFO F-11)281172003-057A2021 Jul 3035765 x 35809 km, 1436.1 min, 6°.6
73.6 eastOPS 6063 (Rhyolite 2)63801973-013A2021 Jul 3035661 x 35911 km, 1436.1 min, 4°.9
71.9 eastUSA 46 (FltSatCom F-8)202531989-077A2021 Jul 3035757 x 35815 km, 1436.1 min, 12°.9
67.0 eastUSA 270 (GSSAP 3)417442016-052A2021 Jun 2135749 x 35824 km, 1436.1 min, 0°.1
66.2 eastUSA 230 (SBIRS GEO 1)374812011-019A2021 Jul 3035777 x 35796 km, 1436.1 min, 1°.8
60.3 eastUSA 291 (Wideband Global SATCOM 10)440712019-014A2021 Jul 3035785 x 35788 km, 1436.1 min, 0°.0
57.5 eastUSA 204 (Wideband Global SATCOM 2)347132009-017A2021 Jul 3035785 x 35787 km, 1436.1 min, 0°.0
54.5 eastUSA 292 (AEHF 5)444812019-051A2021 Jul 3035767 x 35807 km, 1436.1 min, 5°.1
28.8 eastUSA 95 (UFO F-2)227871993-056A2021 Jul 3035776 x 35800 km, 1436.2 min, 11°.4
20.7 eastUSA 241 (SBIRS GEO 2)391202013-011A2021 Jul 3035776 x 35796 km, 1436.1 min, 1°.9
18.9 eastUSA 164 (Milstar 5)271682002-001A2021 Jul 3035776 x 35795 km, 1436.1 min, 9°.2
6.0 eastUSA 195 (Wideband Global SATCOM 1)322582007-046A2021 Jul 3035782 x 35792 km, 1436.1 min, 0°.0
3.9 eastUSA 214 (AEHF 1)368682010-039A2021 Jul 3035758 x 35816 km, 1436.1 min, 3°.7

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: 2021 Jul 31, 01:48 UTC

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