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Orbits


Tyneside, UK
2021 May 11
Tuesday, Day 131

Maintained by:


















Other orbits:


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 Name.

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
100.0 westMUOS 1 (Mobile User Objective System 1)380932012-009A2021 May 1035540 x 36034 km, 1436.1 min, 2°.6
177.0 westMUOS 2 (Mobile User Objective System 2)392062013-036A2021 May 1035567 x 36006 km, 1436.1 min, 2°.5
15.5 westMUOS 3 (Mobile User Objective System 3)403742015-002A2021 May 1035564 x 36010 km, 1436.1 min, 2°.6
75.0 eastMUOS 4 (Mobile User Objective System 4)408872015-044A2021 May 1035547 x 36025 km, 1436.1 min, 2°.7
105.0 westMUOS 5 (Mobile User Objective System 5)416222016-041A2021 May 1034951 x 36621 km, 1436.1 min, 6°.5
73.4 eastOPS 6063 (Rhyolite 2)63801973-013A2021 May 1035681 x 35892 km, 1436.1 min, 5°.1
23.6 westOPS 6393 (FltSatCom F-3)116691980-004A2021 May 1035689 x 35891 km, 1436.3 min, 10°.0
98.8 westOPS 9431 (DSCS II A-1)55871971-095A2021 May 1035785 x 35790 km, 1436.1 min, 6°.3
168.5 westOPS 9432 (DSCS II A-2)55881971-095B2021 May 1035782 x 35822 km, 1436.9 min, 6°.3
71.9 eastUSA 46 (FltSatCom F-8)202531989-077A2021 May 1035759 x 35814 km, 1436.1 min, 13°.0
28.7 eastUSA 95 (UFO F-2)227871993-056A2021 May 1035783 x 35793 km, 1436.2 min, 11°.4
90.0 westUSA 99 (Milstar 1 DFS)229881994-009A2021 May 1035774 x 35799 km, 1436.1 min, 14°.7
11.9 westUSA 104 (UFO F-3)231321994-035A2021 May 1035765 x 35806 km, 1436.0 min, 11°.6
96.5 westUSA 107 (DSP F-17)234351994-084A2021 May 1035778 x 35793 km, 1436.0 min, 14°.6
172.3 eastUSA 108 (UFO F-4)234671995-003A2021 May 1035758 x 35816 km, 1436.1 min, 9°.9
103.9 eastUSA 113 (DSCS III F-9)236281995-038A2021 May 1035780 x 35791 km, 1436.0 min, 11°.7
120.0 westUSA 115 (Milstar 2 DFS)237121995-060A2021 May 1035779 x 35794 km, 1436.1 min, 13°.4
23.9 westUSA 127 (UFO F-7)239671996-042A2021 May 1035737 x 35829 km, 1435.9 min, 9°.5
111.9 westUSA 135 (DSCS III F-10)250191997-065A2021 May 1035757 x 35814 km, 1436.0 min, 10°.6
171.6 eastUSA 138 (UFO F-8)252581998-016A2021 May 1035768 x 35804 km, 1436.1 min, 9°.0
22.8 westUSA 146 (UFO F-10)259671999-063A2021 May 1035763 x 35810 km, 1436.1 min, 8°.2
179.7 westUSA 148 (DSCS III F-11)260522000-001A2021 May 1035777 x 35796 km, 1436.1 min, 8°.9
165.6 westUSA 149 (DSP F-20)263562000-024A2021 May 1035784 x 35793 km, 1436.2 min, 11°.8
134.3 eastUSA 153 (DSCS III F-12)265752000-065A2021 May 1035776 x 35800 km, 1436.2 min, 8°.4
124.4 westUSA 157 (Milstar 4)267152001-009A2021 May 1035775 x 35797 km, 1436.1 min, 9°.6
49.0 westUSA 159 (DSP F-21)268802001-033A2021 May 1035783 x 35789 km, 1436.1 min, 11°.1
19.0 eastUSA 164 (Milstar 5)271682002-001A2021 May 1035778 x 35793 km, 1436.0 min, 9°.1
129.8 westUSA 167 (DSCS III F-13)276912003-008A2021 May 1035770 x 35804 km, 1436.1 min, 7°.3
152.1 eastUSA 169 (Milstar 6)277112003-012A2021 May 1035777 x 35796 km, 1436.1 min, 9°.5
42.5 westUSA 170 (DSCS III F-14)278752003-040A2021 May 1035774 x 35798 km, 1436.0 min, 6°.6
74.9 eastUSA 174 (UFO F-11)281172003-057A2021 May 1035758 x 35815 km, 1436.1 min, 6°.5
87.4 eastUSA 176 (DSP F-22)281582004-004A2021 May 1035782 x 35790 km, 1436.1 min, 9°.6
6.0 eastUSA 195 (Wideband Global SATCOM 1)322582007-046A2021 May 1035785 x 35788 km, 1436.1 min, 0°.0
57.5 eastUSA 204 (Wideband Global SATCOM 2)347132009-017A2021 May 1035783 x 35789 km, 1436.1 min, 0°.1
4.0 eastUSA 214 (AEHF 1)368682010-039A2021 May 1035759 x 35812 km, 1436.1 min, 3°.5
66.2 eastUSA 230 (SBIRS GEO 1)374812011-019A2021 May 1035778 x 35795 km, 1436.1 min, 1°.8
88.4 eastUSA 233 (Wideband Global SATCOM 4)380702012-003A2021 May 1035787 x 35787 km, 1436.1 min, 0°.0
67.5 westUSA 235 (AEHF 2)382542012-019A2021 May 1035755 x 35819 km, 1436.1 min, 2°.6
20.6 eastUSA 241 (SBIRS GEO 2)391202013-011A2021 May 1035778 x 35795 km, 1436.1 min, 1°.9
52.5 westUSA 243 (Wideband Global SATCOM 5)391682013-024A2021 May 1035786 x 35789 km, 1436.1 min, 0°.0
135.2 westUSA 244 (Wideband Global SATCOM 6)392222013-041A2021 May 1035786 x 35788 km, 1436.1 min, 0°.0
111.1 eastUSA 246 (AEHF 3)392562013-050A2021 May 1035763 x 35810 km, 1436.1 min, 0°.8
175.0 eastUSA 263 (Wideband Global SATCOM 7)407462015-036A2021 May 1035786 x 35787 km, 1436.1 min, 0°.0
87.0 eastUSA 271 (GSSAP 4)417452016-052B2021 May 635742 x 35831 km, 1436.1 min, 0°.9
149.8 eastUSA 272 (Wideband Global SATCOM 8)418792016-075A2021 May 1035785 x 35788 km, 1436.1 min, 0°.0
159.4 westUSA 273 (SBIRS GEO 3)419372017-004A2021 May 1035779 x 35794 km, 1436.1 min, 3°.1
11.8 westUSA 275 (Wideband Global SATCOM 9)420752017-016A2021 May 1035785 x 35787 km, 1436.1 min, 0°.1
139.0 eastUSA 282 (SBIRS GEO 4)431622018-009A2021 May 1035779 x 35794 km, 1436.1 min, 4°.3
134.1 eastUSA 283433392018-036A2021 May 1035786 x 35788 km, 1436.1 min, 0°.0
150.0 westUSA 288 (AEHF 4)436512018-079A2021 May 1035766 x 35804 km, 1436.0 min, 3°.2
60.3 eastUSA 291 (Wideband Global SATCOM 10)440712019-014A2021 May 1035786 x 35788 km, 1436.1 min, 0°.0
54.6 eastUSA 292 (AEHF 5)444812019-051A2021 May 1035769 x 35801 km, 1436.0 min, 5°.3
94.1 westUSA 298 (AEHF 6)454652020-022B2021 May 1035760 x 35814 km, 1436.1 min, 6°.9
51.0 westUSA 311 (Mentor 8/Advanced Orion 8)472372019-095A2020 Jan 535610 x 35949 km, 1435.7 min, 7°.9

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 May 11, 01:48 UTC

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