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Orbits


Tyneside, UK
2020 Sep 26
Saturday, Day 270

Maintained by:






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Primary source of unclassified orbital elements

Orbital elements based on amateur observations
Sun-synchronous Satellites - United States

This a list of satellites in sun-synchronous orbit operated by the USA. Names are not necessarily those by which they are known in the NORAD catalogue used by SpaceTrack.

It is a snapshot and is updated daily. The measure that results in an entry in this table is that the drift rate of LTDN (Local Time at the Descending Node) is no more than twenty four minutes each year. Some satellites may have higher drift rates but they may still be acceptable to their owners/operators. They do not appear here. On the converse, although a satellite is in a sun-synchronous orbit, it is not necessarily active.


LTDN Satellite Cat
no
Desig- nation Orbit
Epoch
Orbit
13:43ACRIMSat (Active Cavity Radiometer Irradiance Monitor Satellite)260331999-070B2020 Sep 25666 x 705 km, 98.5 min, 98°.1
18:28AMS 3 (DMSP 5D-1 F-3)108201978-042A2020 Sep 25766 x 782 km, 100.3 min, 98°.5
00:56Amsat Echo (AO-51)283752004-025K2020 Sep 25694 x 810 km, 99.9 min, 98°.4
01:35Aqua (EOS PM-1)274242002-022A2020 Sep 25701 x 704 km, 98.8 min, 98°.2
10:29Athena462752020-061D2020 Sep 25517 x 519 km, 95.0 min, 97°.5
01:44Aura (EOS Chem-1)283762004-026A2020 Sep 25702 x 703 km, 98.8 min, 98°.2
02:05Calipso (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations)291082006-016B2020 Sep 25684 x 686 km, 98.5 min, 98°.2
09:30CEPE (Cylindrical Electrostatic Probe Experiment)47941970-106B2020 Sep 251422 x 1480 km, 114.9 min, 101°.6
02:06Cloudsat291072006-016A2020 Sep 25683 x 687 km, 98.5 min, 98°.2
06:25COBE203221989-089A2020 Sep 25870 x 883 km, 102.5 min, 98°.9
06:10Coriolis276402003-001A2020 Sep 25818 x 840 km, 101.5 min, 98°.7
19:47DMSP 2 F-3 (DAPP 15/Defense Meteorological Satellite Program)21251966-026A2020 Sep 25594 x 813 km, 98.9 min, 98°.1
20:36DMSP 4A F-9 (Defense Meteorological Satellite Program)29201967-080A2020 Sep 25816 x 870 km, 101.8 min, 98°.9
20:25DMSP 5A F-1 (Defense Meteorological Satellite Program)32661968-042A2020 Sep 25803 x 880 km, 101.7 min, 98°.8
20:17DMSP 5A F-3 (Defense Meteorological Satellite Program)40471969-062A2020 Sep 25765 x 827 km, 100.8 min, 98°.7
18:42DMSP 5B F-3 (Defense Meteorological Satellite Program)62751972-089A2020 Sep 25773 x 824 km, 100.8 min, 98°.5
18:54DMSP 5C F-1 (Defense Meteorological Satellite Program)74111974-063A2020 Sep 25768 x 829 km, 100.8 min, 98°.7
18:35DMSP 5C F-2 (Defense Meteorological Satellite Program)78161975-043A2020 Sep 25774 x 851 km, 101.1 min, 98°.8
17:55DMSP 5D-2 F-6 (Defense Meteorological Satellite Program)137361982-118A2020 Sep 25789 x 799 km, 100.7 min, 98°.6
00:51ESSA 220911966-016A2020 Sep 251354 x 1414 km, 113.4 min, 101°.2
09:03ESSA 937641969-016A2020 Sep 251425 x 1505 km, 115.2 min, 101°.6
01:45Fedsat275982002-056B2020 Sep 25790 x 802 km, 100.8 min, 98°.6
10:29Geoeye 1333312008-042A2020 Sep 25672 x 687 km, 98.3 min, 98°.1
09:15Global-1 (Pathfinder 1)417872016-059E2020 Sep 25659 x 703 km, 98.4 min, 98°.0
10:18Global-2438122018-099BG2020 Sep 25572 x 590 km, 96.3 min, 97°.7
17:53GNOMES 1 (GNSS Navigation and Occultation Measurement Satellites)462662020-059B2020 Sep 23600 x 609 km, 96.8 min, 97°.9
10:29ION mk01 SCV LUCAS (In Orbit Now Satellite Carrier Vehicle)462742020-061C2020 Sep 25516 x 525 km, 95.0 min, 97°.5
17:41IRAS137771983-004A2020 Sep 25879 x 905 km, 102.8 min, 99°.0
17:43IRIS (Interface Region Imaging Spectrometer)391972013-033A2020 Sep 25615 x 652 km, 97.4 min, 98°.0
10:06ITOS 143201970-008A2020 Sep 251433 x 1478 km, 115.0 min, 101°.7
09:37Landsat 7256821999-020A2020 Sep 25702 x 703 km, 98.8 min, 98°.1
10:12Landsat 8 (Landsat Data Continuity Mission)390842013-008A2020 Sep 25689 x 710 km, 98.8 min, 98°.2
10:43LKW-2 (Land Survey Satellite 2)430802017-084A2020 Sep 25491 x 501 km, 94.5 min, 97°.4
23:21Nimbus 3 (Nimbus B2)38901969-037A2020 Sep 251070 x 1130 km, 107.3 min, 99°.9
23:41Nimbus 4 (Nimbus D)43621970-025A2020 Sep 251086 x 1098 km, 107.1 min, 100°.0
23:23Nimbus 5 (Nimbus E)63051972-097A2020 Sep 251088 x 1100 km, 107.1 min, 99°.9
22:49Nimbus 6 (Nimbus F)79241975-052A2020 Sep 251101 x 1112 km, 107.4 min, 100°.1
10:04NOAA 1 (ITOS A)47931970-106A2020 Sep 251423 x 1473 km, 114.8 min, 101°.6
03:37NOAA 2 (ITOS D)62351972-082A2020 Sep 251448 x 1454 km, 114.9 min, 101°.9
03:35NOAA 4 (ITOS G)75291974-089A2020 Sep 251445 x 1458 km, 114.9 min, 101°.8
03:23NOAA 5 (ITOS H)90571976-077A2020 Sep 251509 x 1524 km, 116.3 min, 102°.0
05:34NOAA 6 (NOAA A)114161979-057A2020 Sep 25773 x 787 km, 100.4 min, 98°.7
04:35NOAA 8 (NOAA E)139231983-022A2020 Sep 25786 x 806 km, 100.8 min, 98°.6
04:54NOAA 10 (NOAA G)169691986-073A2020 Sep 25789 x 807 km, 100.8 min, 98°.5
06:07NOAA 12 (NOAA D)212631991-032A2020 Sep 25795 x 816 km, 101.0 min, 98°.5
07:17NOAA 15 (NOAA K)253381998-030A2020 Sep 25798 x 812 km, 101.0 min, 98°.7
10:05NOAA 16 (NOAA L)265362000-055A2020 Sep 25840 x 856 km, 101.9 min, 98°.7
01:56NOAA 17 (NOAA M)274532002-032A2020 Sep 25800 x 816 km, 101.0 min, 98°.6
01:24NOAA 20 (JPSS 1)430132017-073A2020 Sep 25826 x 828 km, 101.4 min, 98°.7
01:36OCO 2 (Orbiting Carbon Observatory)400592014-035A2020 Sep 25702 x 703 km, 98.8 min, 98°.2
13:10OrbView-2248831997-037A2020 Sep 25778 x 782 km, 100.4 min, 98°.6
09:33Oscar 5 (Australis Oscar 5)43211970-008B2020 Sep 251434 x 1477 km, 115.0 min, 101°.6
03:49Oscar 6 (AO-6)62361972-082B2020 Sep 251448 x 1455 km, 114.9 min, 101°.9
03:35Oscar 7 (AO-7)75301974-089B2020 Sep 251440 x 1459 km, 114.9 min, 101°.8
02:32Oscar 8 (AO-8)107031978-026B2020 Sep 25892 x 900 km, 102.9 min, 99°.1
06:08QuakeSat278452003-031F2020 Sep 25811 x 825 km, 101.2 min, 98°.7
23:11SECOR 13 (EGRS 13)38911969-037B2020 Sep 251069 x 1128 km, 107.2 min, 99°.9
10:48Skysat 1394182013-066C2020 Sep 25555 x 585 km, 96.1 min, 97°.6
10:43Skysat 3 (Skysat C1)416012016-040C2020 Sep 25449 x 455 km, 93.6 min, 97°.2
10:13Skysat 4 (Skysat C2)417732016-058D2020 Sep 25451 x 453 km, 93.6 min, 97°.2
10:13Skysat 5 (Skysat C3)417742016-058E2020 Sep 25451 x 453 km, 93.6 min, 97°.2
10:12Skysat 6 (Skysat C4)417712016-058B2020 Sep 25451 x 453 km, 93.6 min, 97°.2
10:10Skysat 7 (Skysat C5)417722016-058C2020 Sep 25493 x 494 km, 94.5 min, 97°.3
13:12Skysat 8 (Skysat C6)429922017-068F2020 Sep 25449 x 452 km, 93.6 min, 97°.2
13:11Skysat 9 (Skysat C7)429912017-068E2020 Sep 25449 x 452 km, 93.6 min, 97°.2
13:11Skysat 10 (Skysat C8)429902017-068D2020 Sep 25448 x 454 km, 93.6 min, 97°.2
13:07Skysat 11 (Skysat C9)429892017-068C2020 Sep 25450 x 451 km, 93.6 min, 97°.2
13:09Skysat 12 (Skysat C10)429882017-068B2020 Sep 25447 x 454 km, 93.6 min, 97°.2
13:10Skysat 13 (Skysat C11)429872017-068A2020 Sep 25443 x 458 km, 93.6 min, 97°.2
10:16Skysat 14 (Skysat C12)437972018-099AR2020 Sep 25451 x 453 km, 93.6 min, 97°.2
10:16SkySat 15 (Skysat C13)438022018-099AW2020 Sep 25463 x 470 km, 93.9 min, 97°.2
05:59SMAP (Soil Moisture Active Passive)403762015-003A2020 Sep 25681 x 683 km, 98.4 min, 98°.1
10:21STPSat-5437622018-099E2020 Sep 25570 x 588 km, 96.3 min, 97°.7
01:25Suomi NPP (Suomi National Polar-orbiting Partnership)378492011-061A2020 Sep 25826 x 828 km, 101.4 min, 98°.7
10:30Terra (EOS AM-1)259941999-068A2020 Sep 25701 x 704 km, 98.8 min, 98°.2
09:24TIROS-N110601978-096A2020 Sep 25823 x 839 km, 101.5 min, 98°.7
13:49TIROS 1014301965-051A2020 Sep 25718 x 797 km, 100.0 min, 98°.3
13:56TOMS-EP239401996-037A2020 Sep 25688 x 728 km, 98.9 min, 98°.2
23:19TOPO 143631970-025B2020 Sep 251083 x 1087 km, 106.9 min, 99°.9
18:11TRACE252801998-020A2020 Sep 25510 x 541 km, 95.1 min, 97°.5
18:02USA 26 (DMSP 5D-2 F-8)181231987-053A2020 Sep 25820 x 840 km, 101.5 min, 98°.7
06:52USA 73 (DMSP 5D-2 F-11)217981991-082A2020 Sep 25827 x 847 km, 101.7 min, 98°.9
05:43USA 109 (DMSP 5D-2 F-13)235331995-015A2020 Sep 25834 x 844 km, 101.7 min, 98°.8
04:14USA 172 (DMSP 5D-3 F-16)280542003-048A2020 Sep 25842 x 852 km, 101.9 min, 98°.9
08:03USA 186 (KH- 11 Block-4 F1?/Crystal)288882005-042A2020 Sep 24260 x 430 km, 91.4 min, 96°.9
06:38USA 191 (DMSP 5D-3 F-17)295222006-050A2020 Sep 25839 x 852 km, 101.8 min, 98°.8
12:02USA 205 (STSS-ATRR)349032009-023A2020 Sep 18869 x 875 km, 102.4 min, 98°.9
20:17USA 216 (SBSS)371682010-048A2020 Sep 25623 x 625 km, 97.2 min, 97°.9
12:56USA 224 (KH- 11 Block-4 F2?/Crystal)373482011-002A2020 Sep 25260 x 1018 km, 97.5 min, 97°.9
09:39USA 245 (KH-11 Block-4 F3?/Crystal)392322013-043A2020 Sep 14268 x 1012 km, 97.5 min, 97°.9
06:13USA 249 (DMSP 5D-3 F-19)396302014-015A2020 Sep 25838 x 854 km, 101.8 min, 98°.8
01:31WestPac253981998-043E2020 Sep 25814 x 817 km, 101.2 min, 98°.7
07:58WISE (Wide Field IR Explorer)361192009-071A2020 Sep 25473 x 478 km, 94.1 min, 97°.3
13:31WorldView 1320602007-041A2020 Sep 25491 x 493 km, 94.5 min, 97°.4
10:25WorldView 2359462009-055A2020 Sep 25764 x 768 km, 100.2 min, 98°.5
10:33Worldview 3401152014-048A2020 Sep 25612 x 614 km, 97.0 min, 97°.8

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: 2020 Sep 25
SpaceTrack - updated: 2020 Sep 26

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