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Orbits


Tyneside, UK
2020 Oct 1
Thursday, Day 275

Maintained by:






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Primary source of unclassified orbital elements

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

This a list of satellites in sun-synchronous orbit operated by the USA ordered by LTDN - Local Time at the Descending Node. 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
00:51ESSA 220911966-016A2020 Sep 301354 x 1414 km, 113.4 min, 101°.2
00:56Amsat Echo (AO-51)283752004-025K2020 Sep 30694 x 810 km, 99.9 min, 98°.4
01:24NOAA 20 (JPSS 1)430132017-073A2020 Sep 30826 x 828 km, 101.4 min, 98°.7
01:25Suomi NPP (Suomi National Polar-orbiting Partnership)378492011-061A2020 Sep 30826 x 828 km, 101.4 min, 98°.7
01:32WestPac253981998-043E2020 Sep 30814 x 818 km, 101.2 min, 98°.7
01:35Aqua (EOS PM-1)274242002-022A2020 Sep 30701 x 704 km, 98.8 min, 98°.2
01:36OCO 2 (Orbiting Carbon Observatory)400592014-035A2020 Sep 30702 x 703 km, 98.8 min, 98°.2
01:44Aura (EOS Chem-1)283762004-026A2020 Sep 30702 x 703 km, 98.8 min, 98°.2
01:45Fedsat275982002-056B2020 Sep 30790 x 802 km, 100.8 min, 98°.6
01:56NOAA 17 (NOAA M)274532002-032A2020 Sep 30801 x 816 km, 101.0 min, 98°.6
02:06Calipso (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations)291082006-016B2020 Sep 30684 x 686 km, 98.5 min, 98°.2
02:07Cloudsat291072006-016A2020 Sep 30684 x 687 km, 98.5 min, 98°.2
02:32Oscar 8 (AO-8)107031978-026B2020 Sep 30893 x 900 km, 102.9 min, 99°.1
03:23NOAA 5 (ITOS H)90571976-077A2020 Sep 301509 x 1524 km, 116.3 min, 102°.0
03:35NOAA 4 (ITOS G)75291974-089A2020 Sep 301445 x 1458 km, 114.9 min, 101°.8
03:36Oscar 7 (AO-7)75301974-089B2020 Sep 301440 x 1459 km, 114.9 min, 101°.8
03:37NOAA 2 (ITOS D)62351972-082A2020 Sep 301448 x 1454 km, 114.9 min, 101°.9
03:49Oscar 6 (AO-6)62361972-082B2020 Sep 301448 x 1455 km, 114.9 min, 101°.9
04:14USA 172 (DMSP 5D-3 F-16)280542003-048A2020 Sep 30842 x 852 km, 101.9 min, 98°.9
04:35NOAA 8 (NOAA E)139231983-022A2020 Sep 30786 x 806 km, 100.8 min, 98°.6
04:54NOAA 10 (NOAA G)169691986-073A2020 Sep 30789 x 807 km, 100.8 min, 98°.5
05:34NOAA 6 (NOAA A)114161979-057A2020 Sep 30773 x 786 km, 100.4 min, 98°.7
05:43USA 109 (DMSP 5D-2 F-13)235331995-015A2020 Sep 30834 x 844 km, 101.7 min, 98°.8
05:59SMAP (Soil Moisture Active Passive)403762015-003A2020 Sep 30681 x 683 km, 98.4 min, 98°.1
06:06NOAA 12 (NOAA D)212631991-032A2020 Sep 30795 x 815 km, 101.0 min, 98°.5
06:08QuakeSat278452003-031F2020 Sep 30810 x 825 km, 101.2 min, 98°.7
06:10Coriolis276402003-001A2020 Sep 30818 x 840 km, 101.5 min, 98°.7
06:13USA 249 (DMSP 5D-3 F-19)396302014-015A2020 Sep 30838 x 854 km, 101.8 min, 98°.8
06:25COBE203221989-089A2020 Sep 30870 x 884 km, 102.5 min, 98°.9
06:38USA 191 (DMSP 5D-3 F-17)295222006-050A2020 Sep 30839 x 852 km, 101.8 min, 98°.8
06:52USA 73 (DMSP 5D-2 F-11)217981991-082A2020 Sep 30827 x 847 km, 101.7 min, 98°.9
07:17NOAA 15 (NOAA K)253381998-030A2020 Sep 30798 x 812 km, 101.0 min, 98°.7
07:58WISE (Wide Field IR Explorer)361192009-071A2020 Sep 30473 x 477 km, 94.1 min, 97°.3
08:03USA 186 (KH- 11 Block-4 F1?/Crystal)288882005-042A2020 Sep 28263 x 426 km, 91.4 min, 96°.9
09:03ESSA 937641969-016A2020 Sep 301425 x 1505 km, 115.2 min, 101°.6
09:15Global-1 (Pathfinder 1)417872016-059E2020 Sep 30660 x 703 km, 98.4 min, 98°.0
09:24TIROS-N110601978-096A2020 Sep 30823 x 839 km, 101.5 min, 98°.7
09:30CEPE (Cylindrical Electrostatic Probe Experiment)47941970-106B2020 Sep 301422 x 1480 km, 114.9 min, 101°.6
09:32Oscar 5 (Australis Oscar 5)43211970-008B2020 Sep 301434 x 1477 km, 115.0 min, 101°.6
09:37Landsat 7256821999-020A2020 Sep 30702 x 703 km, 98.8 min, 98°.1
09:39USA 245 (KH-11 Block-4 F3?/Crystal)392322013-043A2020 Sep 14268 x 1012 km, 97.5 min, 97°.9
10:04NOAA 1 (ITOS A)47931970-106A2020 Sep 301423 x 1473 km, 114.8 min, 101°.6
10:05NOAA 16 (NOAA L)265362000-055A2020 Sep 30840 x 856 km, 101.9 min, 98°.7
10:06ITOS 143201970-008A2020 Sep 301433 x 1478 km, 115.0 min, 101°.7
10:09Skysat 7 (Skysat C5)417722016-058C2020 Sep 30493 x 494 km, 94.5 min, 97°.3
10:12Landsat 8 (Landsat Data Continuity Mission)390842013-008A2020 Sep 30702 x 703 km, 98.8 min, 98°.2
10:12Skysat 6 (Skysat C4)417712016-058B2020 Sep 30451 x 453 km, 93.6 min, 97°.2
10:13Skysat 4 (Skysat C2)417732016-058D2020 Sep 30451 x 453 km, 93.6 min, 97°.2
10:13Skysat 5 (Skysat C3)417742016-058E2020 Sep 30451 x 453 km, 93.6 min, 97°.2
10:16SkySat 15 (Skysat C13)438022018-099AW2020 Sep 30463 x 470 km, 93.9 min, 97°.2
10:16Skysat 14 (Skysat C12)437972018-099AR2020 Sep 30452 x 453 km, 93.6 min, 97°.2
10:18Global-2438122018-099BG2020 Sep 30571 x 590 km, 96.3 min, 97°.7
10:21STPSat-5437622018-099E2020 Sep 30570 x 589 km, 96.3 min, 97°.7
10:25WorldView 2359462009-055A2020 Sep 30764 x 768 km, 100.2 min, 98°.5
10:29Athena462752020-061D2020 Sep 30517 x 520 km, 95.0 min, 97°.5
10:29Geoeye 1333312008-042A2020 Sep 30672 x 686 km, 98.3 min, 98°.1
10:29ION mk01 SCV LUCAS (In Orbit Now Satellite Carrier Vehicle)462742020-061C2020 Sep 30515 x 525 km, 95.0 min, 97°.5
10:30Terra (EOS AM-1)259941999-068A2020 Sep 30702 x 703 km, 98.8 min, 98°.2
10:32Worldview 3401152014-048A2020 Sep 30612 x 614 km, 97.0 min, 97°.8
10:43LKW-2 (Land Survey Satellite 2)430802017-084A2020 Sep 30492 x 500 km, 94.5 min, 97°.4
10:43Skysat 3 (Skysat C1)416012016-040C2020 Sep 30449 x 455 km, 93.6 min, 97°.2
10:48Skysat 1394182013-066C2020 Sep 30555 x 585 km, 96.1 min, 97°.6
12:02USA 205 (STSS-ATRR)349032009-023A2020 Sep 18869 x 875 km, 102.4 min, 98°.9
12:56USA 224 (KH- 11 Block-4 F2?/Crystal)373482011-002A2020 Sep 25260 x 1018 km, 97.5 min, 97°.9
13:07Skysat 11 (Skysat C9)429892017-068C2020 Sep 30450 x 451 km, 93.6 min, 97°.2
13:09Skysat 12 (Skysat C10)429882017-068B2020 Sep 30447 x 454 km, 93.6 min, 97°.2
13:10OrbView-2248831997-037A2020 Sep 30778 x 782 km, 100.4 min, 98°.6
13:10Skysat 13 (Skysat C11)429872017-068A2020 Sep 30443 x 458 km, 93.6 min, 97°.2
13:11Skysat 10 (Skysat C8)429902017-068D2020 Sep 30448 x 453 km, 93.6 min, 97°.2
13:11Skysat 9 (Skysat C7)429912017-068E2020 Sep 30449 x 452 km, 93.6 min, 97°.2
13:12Skysat 8 (Skysat C6)429922017-068F2020 Sep 30450 x 452 km, 93.6 min, 97°.2
13:31WorldView 1320602007-041A2020 Sep 30492 x 494 km, 94.5 min, 97°.4
13:43ACRIMSat (Active Cavity Radiometer Irradiance Monitor Satellite)260331999-070B2020 Sep 30666 x 706 km, 98.5 min, 98°.1
13:49TIROS 1014301965-051A2020 Sep 30718 x 797 km, 100.0 min, 98°.3
13:56TOMS-EP239401996-037A2020 Sep 30688 x 729 km, 98.9 min, 98°.2
17:41IRAS137771983-004A2020 Sep 30879 x 905 km, 102.8 min, 99°.0
17:43IRIS (Interface Region Imaging Spectrometer)391972013-033A2020 Sep 30615 x 652 km, 97.4 min, 98°.0
17:53GNOMES 1 (GNSS Navigation and Occultation Measurement Satellites)462662020-059B2020 Sep 30600 x 609 km, 96.8 min, 97°.9
17:55DMSP 5D-2 F-6 (Defense Meteorological Satellite Program)137361982-118A2020 Sep 30789 x 799 km, 100.7 min, 98°.6
18:02USA 26 (DMSP 5D-2 F-8)181231987-053A2020 Sep 30820 x 840 km, 101.5 min, 98°.7
18:11TRACE252801998-020A2020 Sep 30510 x 541 km, 95.1 min, 97°.5
18:28AMS 3 (DMSP 5D-1 F-3)108201978-042A2020 Sep 30766 x 782 km, 100.3 min, 98°.5
18:35DMSP 5C F-2 (Defense Meteorological Satellite Program)78161975-043A2020 Sep 30774 x 852 km, 101.1 min, 98°.8
18:42DMSP 5B F-3 (Defense Meteorological Satellite Program)62751972-089A2020 Sep 30773 x 824 km, 100.8 min, 98°.5
18:55DMSP 5C F-1 (Defense Meteorological Satellite Program)74111974-063A2020 Sep 30769 x 829 km, 100.8 min, 98°.7
19:47DMSP 2 F-3 (DAPP 15/Defense Meteorological Satellite Program)21251966-026A2020 Sep 30594 x 813 km, 98.9 min, 98°.1
20:17USA 216 (SBSS)371682010-048A2020 Sep 30624 x 625 km, 97.2 min, 97°.9
20:18DMSP 5A F-3 (Defense Meteorological Satellite Program)40471969-062A2020 Sep 30765 x 827 km, 100.8 min, 98°.7
20:25DMSP 5A F-1 (Defense Meteorological Satellite Program)32661968-042A2020 Sep 30803 x 880 km, 101.7 min, 98°.8
20:36DMSP 4A F-9 (Defense Meteorological Satellite Program)29201967-080A2020 Sep 30816 x 871 km, 101.8 min, 98°.9
22:49Nimbus 6 (Nimbus F)79241975-052A2020 Sep 301101 x 1112 km, 107.4 min, 100°.1
23:11SECOR 13 (EGRS 13)38911969-037B2020 Sep 301069 x 1128 km, 107.2 min, 99°.9
23:19TOPO 143631970-025B2020 Sep 301083 x 1087 km, 106.9 min, 99°.9
23:21Nimbus 3 (Nimbus B2)38901969-037A2020 Sep 301070 x 1130 km, 107.3 min, 99°.9
23:23Nimbus 5 (Nimbus E)63051972-097A2020 Oct 11088 x 1100 km, 107.1 min, 99°.9
23:41Nimbus 4 (Nimbus D)43621970-025A2020 Sep 301086 x 1098 km, 107.1 min, 100°.0

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 30
SpaceTrack - updated: 2020 Oct 1

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