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Orbits
Tyneside, UK
2023 Jun 4
Sunday, Day 155

Curated by:
Robert Christy


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Geosynch Sats on the Move

Geosynch by Longitude

Geosynch by Name

Geosynch by Satellite Age

Geosynch - Russia by Type

Geosynch - Russia by Longitude

Geosynch - China by Type

Geosynch - China by Longitude

Geosynch - US by Type

Geosynch - US by Longitude

Geosynch - US Gov/Mil by Type

Geosynch - US Gov/Mil by Long

Geosynch Metsats by Name

Geosynch Metsats by Longitude


Other orbits:

Sun-synchronous orbits

Tables of Launches
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.

Updated: 2023 Jun 4, 05:48 UTC

Longi-
tude (°)		 Satellite Cat
no		 Desig- nation Orbit
Epoch		 Orbit
10.0 westUSA 269 (SDS [-3 F-8?])417242016-047A2023 Feb 2835774 x 35800 km, 1436.1 min, 2°.5
12.0 westUSA 275 (Wideband Global SATCOM 9)420752017-016A2023 Jun 335785 x 35789 km, 1436.1 min, 0°.0
15.5 westMUOS 3 (Mobile User Objective System 3)403742015-002A2023 Jun 335568 x 36005 km, 1436.1 min, 2°.8
22.8 westUSA 146 (UFO F-10)259671999-063A2023 Jun 335769 x 35804 km, 1436.1 min, 9°.1
23.8 westUSA 236 (SDS-3 F-6)384662012-033A2023 Feb 2835769 x 35805 km, 1436.1 min, 4°.9
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
26.8 westUSA 139 (Mentor 2/Advanced Orion 2)253361998-029A2023 Feb 2835616 x 35958 km, 1436.1 min, 7°.8
38.0 westUSA 241 (SBIRS GEO 2)391202013-011A2023 Jun 335779 x 35794 km, 1436.1 min, 2°.3
42.3 westUSA 170 (DSCS III F-14)278752003-040A2023 Jun 335769 x 35805 km, 1436.1 min, 8°.1
42.8 westUSA 211 (Wideband Global SATCOM 3)361082009-068A2023 Jun 335784 x 35791 km, 1436.1 min, 0°.3
49.5 westUSA 159 (DSP F-21)268802001-033A2023 Jun 335787 x 35791 km, 1436.2 min, 11°.7
52.5 westUSA 243 (Wideband Global SATCOM 5)391682013-024A2023 Jun 335787 x 35788 km, 1436.1 min, 0°.0
67.5 westUSA 288 (AEHF 4)436512018-079A2023 Jun 335772 x 35803 km, 1436.1 min, 1°.9
90.0 westUSA 99 (Milstar 1 DFS)229881994-009A2023 Jun 335776 x 35798 km, 1436.1 min, 15°.9
94.2 westUSA 235 (AEHF 2)382542012-019A2023 Jun 335777 x 35795 km, 1436.1 min, 4°.1
96.8 westUSA 273 (SBIRS GEO 3)419372017-004A2023 Jun 335777 x 35796 km, 1436.1 min, 1°.7
100.0 westMUOS 1 (Mobile User Objective System 1)380932012-009A2023 Jun 335539 x 36035 km, 1436.1 min, 3°.4
101.1 westOPS 9431 (DSCS II A-1)55871971-095A2023 Jun 335775 x 35792 km, 1436.0 min, 4°.4
105.0 westMUOS 5 (Mobile User Objective System 5)416222016-041A2023 Jun 334964 x 36609 km, 1436.1 min, 4°.8
111.6 westSTPSat 6 (Space Test Program Satellite)498172021-118A2023 Jun 335783 x 35790 km, 1436.1 min, 0°.0
112.4 westUSA 135 (DSCS III F-10)250191997-065A2023 Jun 335766 x 35807 km, 1436.1 min, 11°.5
120.0 westUSA 115 (Milstar 2 DFS)237121995-060A2023 Jun 335781 x 35793 km, 1436.1 min, 13°.7
124.1 westUSA 157 (Milstar 4)267152001-009A2023 Jun 335779 x 35796 km, 1436.2 min, 10°.4
129.9 westUSA 167 (DSCS III F-13)276912003-008A2023 Jun 335781 x 35791 km, 1436.1 min, 8°.7
135.2 westUSA 244 (Wideband Global SATCOM 6)392222013-041A2023 Jun 335786 x 35790 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)533552022-092A2023 Jun 335752 x 35821 km, 1436.1 min, 6°.0
155.1 westUSA 246 (AEHF 3)392562013-050A2023 Jun 335574 x 36001 km, 1436.1 min, 2°.5
165.7 westUSA 149 (DSP F-20)263562000-024A2023 Jun 335784 x 35793 km, 1436.2 min, 12°.3
172.2 westUSA 127 (UFO F-7)239671996-042A2023 Jun 335753 x 35837 km, 1436.5 min, 10°.1
174.1 westOPS 6393 (FltSatCom F-3)116691980-004A2023 Jun 335675 x 35885 km, 1435.8 min, 8°.5
177.0 westMUOS 2 (Mobile User Objective System 2)392062013-036A2023 Jun 335569 x 36006 km, 1436.1 min, 3°.1
179.6 westUSA 148 (DSCS III F-11)260522000-001A2023 Jun 335783 x 35790 km, 1436.1 min, 10°.1
175.0 eastUSA 263 (Wideband Global SATCOM 7)407462015-036A2023 Jun 335786 x 35788 km, 1436.1 min, 0°.0
172.3 eastUSA 108 (UFO F-4)234671995-003A2023 Jun 335766 x 35807 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
152.2 eastUSA 169 (Milstar 6)277112003-012A2023 Jun 335364 x 36210 km, 1436.1 min, 10°.7
149.8 eastUSA 272 (Wideband Global SATCOM 8)418792016-075A2023 Jun 335786 x 35788 km, 1436.1 min, 0°.0
139.0 eastUSA 282 (SBIRS GEO 4)431622018-009A2023 Jun 335778 x 35796 km, 1436.1 min, 2°.9
137.7 eastUSA 298 (AEHF 6)454652020-022B2023 Jun 335597 x 35978 km, 1436.2 min, 5°.1
134.4 eastUSA 153 (DSCS III F-12)265752000-065A2023 Jun 335785 x 35790 km, 1436.2 min, 9°.7
134.1 eastUSA 283 (Continuous Broadcast Augmenting SATCOM)433392018-036A2023 May 3135785 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
119.3 eastUSA 332 (Wide Field of View Testbed)529402022-073A2023 Jun 335774 x 35800 km, 1436.1 min, 0°.8
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)380702012-003A2023 Jun 335786 x 35789 km, 1436.1 min, 0°.0
87.3 eastUSA 176 (DSP F-22)281582004-004A2023 Jun 335786 x 35789 km, 1436.1 min, 10°.6
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
75.6 eastUSA 174 (UFO F-11)281172003-057A2023 Jun 335765 x 35809 km, 1436.1 min, 7°.5
75.1 eastMUOS 4 (Mobile User Objective System 4)408872015-044A2023 Jun 335544 x 36029 km, 1436.1 min, 2°.7
73.4 eastOPS 6063 (Rhyolite 2)63801973-013A2023 Jun 335681 x 35893 km, 1436.1 min, 3°.2
71.9 eastUSA 46 (FltSatCom F-8)202531989-077A2023 May 2335758 x 35814 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
65.7 eastUSA 230 (SBIRS GEO 1)374812011-019A2023 Jun 335779 x 35794 km, 1436.1 min, 2°.3
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)440712019-014A2023 Jun 335786 x 35789 km, 1436.1 min, 0°.0
57.5 eastUSA 204 (Wideband Global SATCOM 2)347132009-017A2023 Jun 335787 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
54.5 eastUSA 292 (AEHF 5)444812019-051A2023 Jun 335600 x 35973 km, 1436.1 min, 3°.5
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)227871993-056A2023 Jun 335773 x 35799 km, 1436.1 min, 11°.6
20.9 eastUSA 315 (SBIRS GEO 5)486182021-042A2023 Jun 335778 x 35795 km, 1436.1 min, 6°.8
18.9 eastUSA 164 (Milstar 5)271682002-001A2023 Jun 335362 x 36210 km, 1436.1 min, 9°.9
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)322582007-046A2023 Jun 335784 x 35789 km, 1436.1 min, 0°.0
4.0 eastUSA 214 (AEHF 1)368682010-039A2023 Jun 335759 x 35815 km, 1436.1 min, 5°.4

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.
Copyright © Robert Christy, all rights reserved
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