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Orbits


Tyneside, UK
2020 Jul 4
Saturday, Day 186

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
00:55Amsat Echo (AO-51)283752004-025K2020 Jul 3693 x 811 km, 99.9 min, 98°.4
00:55ESSA 220911966-016A2020 Jul 31354 x 1415 km, 113.4 min, 101°.2
01:24NOAA 20 (JPSS 1)430132017-073A2020 Jul 3826 x 827 km, 101.4 min, 98°.7
01:24Suomi NPP (Suomi National Polar-orbiting Partnership)378492011-061A2020 Jul 3826 x 828 km, 101.4 min, 98°.7
01:29WESTPAC253981998-043E2020 Jul 3815 x 817 km, 101.2 min, 98°.7
01:35Aqua (EOS PM-1)274242002-022A2020 Jul 3702 x 703 km, 98.8 min, 98°.2
01:36OCO 2 (Orbiting Carbon Observatory)400592014-035A2020 Jul 3702 x 703 km, 98.8 min, 98°.2
01:44Aura (EOS Chem-1)283762004-026A2020 Jul 3702 x 703 km, 98.8 min, 98°.2
01:46Fedsat275982002-056B2020 Jul 3790 x 802 km, 100.8 min, 98°.6
01:58NOAA 17 (NOAA M)274532002-032A2020 Jul 3800 x 817 km, 101.0 min, 98°.6
02:02Calipso (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations)291082006-016B2020 Jul 3684 x 686 km, 98.5 min, 98°.2
02:02Cloudsat291072006-016A2020 Jul 3684 x 687 km, 98.5 min, 98°.2
02:31Oscar 8 (AO-8)107031978-026B2020 Jul 3891 x 901 km, 102.9 min, 99°.0
03:25NOAA 5 (ITOS H)90571976-077A2020 Jul 31508 x 1524 km, 116.3 min, 102°.0
03:32NOAA 4 (ITOS G)75291974-089A2020 Jul 31444 x 1459 km, 114.9 min, 101°.8
03:32Oscar 7 (AO-7)75301974-089B2020 Jul 31440 x 1459 km, 114.9 min, 101°.8
03:33NOAA 2 (ITOS D)62351972-082A2020 Jul 31448 x 1455 km, 114.9 min, 101°.9
03:44Oscar 6 (AO-6)62361972-082B2020 Jul 31448 x 1455 km, 114.9 min, 101°.9
04:10USA 172 (DMSP 5D-3 F-16)280542003-048A2020 Jul 3842 x 852 km, 101.9 min, 98°.9
04:34NOAA 8 (NOAA E)139231983-022A2020 Jul 3785 x 807 km, 100.8 min, 98°.6
04:58NOAA 10 (NOAA G)169691986-073A2020 Jul 3790 x 806 km, 100.8 min, 98°.5
05:29NOAA 6 (NOAA A)114161979-057A2020 Jul 3773 x 787 km, 100.4 min, 98°.7
05:42USA 109 (DMSP 5D-2 F-13)235331995-015A2020 Jul 3835 x 843 km, 101.7 min, 98°.8
05:59SMAP (Soil Moisture Active Passive)403762015-003A2020 Jul 3682 x 683 km, 98.4 min, 98°.1
06:09QuakeSat278452003-031F2020 Jul 3811 x 825 km, 101.2 min, 98°.7
06:10Coriolis276402003-001A2020 Jul 3818 x 839 km, 101.5 min, 98°.7
06:12NOAA 12 (NOAA D)212631991-032A2020 Jul 3797 x 814 km, 101.0 min, 98°.5
06:15USA 249 (DMSP 5D-3 F-19)396302014-015A2020 Jul 3839 x 853 km, 101.8 min, 98°.8
06:27COBE203221989-089A2020 Jul 3870 x 884 km, 102.5 min, 98°.9
06:38USA 191 (DMSP 5D-3 F-17)295222006-050A2020 Jul 3838 x 853 km, 101.8 min, 98°.8
06:47USA 73 (DMSP 5D-2 F-11)217981991-082A2020 Jul 3827 x 846 km, 101.7 min, 98°.9
07:14NOAA 15 (NOAA K)253381998-030A2020 Jul 3798 x 812 km, 101.0 min, 98°.7
07:58WISE (Wide Field IR Explorer)361192009-071A2020 Jul 3474 x 477 km, 94.1 min, 97°.3
08:03USA 186 (KH- 11 Block-4 F1?/Crystal)288882005-042A2020 Jun 25264 x 441 km, 91.6 min, 96°.9
09:08ESSA 937641969-016A2020 Jul 31425 x 1505 km, 115.2 min, 101°.6
09:20Global-1 (Pathfinder 1)417872016-059E2020 Jul 3661 x 702 km, 98.4 min, 98°.0
09:24TIROS-N110601978-096A2020 Jul 3823 x 839 km, 101.5 min, 98°.7
09:34CEPE (Cylindrical Electrostatic Probe Experiment)47941970-106B2020 Jul 31422 x 1479 km, 114.9 min, 101°.6
09:37Oscar 5 (Australis Oscar 5)43211970-008B2020 Jul 31434 x 1477 km, 115.0 min, 101°.6
09:38USA 245 (KH- 11 Block-4 F3?/Crystal)392322013-043A2020 Jul 1269 x 1014 km, 97.5 min, 97°.9
09:42Landsat 7256821999-020A2020 Jul 3701 x 703 km, 98.8 min, 98°.1
10:05NOAA 1 (ITOS A)47931970-106A2020 Jul 31423 x 1472 km, 114.8 min, 101°.7
10:07ITOS 143201970-008A2020 Jul 31434 x 1478 km, 115.0 min, 101°.7
10:08NOAA 16 (NOAA L)265362000-055A2020 Jul 3840 x 856 km, 101.9 min, 98°.7
10:11Skysat 7 (Skysat C5)417722016-058C2020 Jul 3493 x 495 km, 94.5 min, 97°.4
10:12Landsat 8 (Landsat Data Continuity Mission)390842013-008A2020 Jul 3702 x 703 km, 98.8 min, 98°.2
10:13Skysat 6 (Skysat C4)417712016-058B2020 Jul 3452 x 453 km, 93.6 min, 97°.2
10:14Skysat 4 (Skysat C2)417732016-058D2020 Jul 3451 x 454 km, 93.6 min, 97°.2
10:14Skysat 5 (Skysat C3)417742016-058E2020 Jul 3452 x 453 km, 93.6 min, 97°.2
10:17Skysat 14 (Skysat C12)437972018-099AR2020 Jul 3452 x 453 km, 93.6 min, 97°.2
10:18SkySat 15 (Skysat C13)438022018-099AW2020 Jul 3464 x 470 km, 93.9 min, 97°.2
10:19Global-2438122018-099BG2020 Jul 3570 x 591 km, 96.3 min, 97°.7
10:22STPSat-5437622018-099E2020 Jul 3568 x 590 km, 96.3 min, 97°.7
10:25WorldView 2359462009-055A2020 Jul 3766 x 767 km, 100.2 min, 98°.4
10:29Geoeye 1333312008-042A2020 Jul 3673 x 686 km, 98.3 min, 98°.1
10:30Terra (EOS AM-1)259941999-068A2020 Jul 3701 x 704 km, 98.8 min, 98°.2
10:36Worldview 3401152014-048A2020 Jul 3613 x 614 km, 97.0 min, 97°.8
10:44LKW-2 (Land Survey Satellite 2)430802017-084A2020 Jul 3491 x 500 km, 94.5 min, 97°.4
10:44Skysat 3 (Skysat C1)416012016-040C2020 Jul 3447 x 457 km, 93.6 min, 97°.2
10:50Skysat 1394182013-066C2020 Jul 3554 x 586 km, 96.1 min, 97°.6
12:02USA 205 (STSS-ATRR)349032009-023A2020 Jun 24865 x 879 km, 102.4 min, 98°.9
12:59USA 224 (KH- 11 Block-4 F2?/Crystal)373482011-002A2020 Jun 26258 x 1025 km, 97.6 min, 97°.9
13:06OrbView-2248831997-037A2020 Jul 3777 x 782 km, 100.4 min, 98°.6
13:07Skysat 11 (Skysat C9)429892017-068C2020 Jul 3451 x 452 km, 93.6 min, 97°.2
13:09Skysat 12 (Skysat C10)429882017-068B2020 Jul 3448 x 455 km, 93.6 min, 97°.2
13:10Skysat 10 (Skysat C8)429902017-068D2020 Jul 3449 x 453 km, 93.6 min, 97°.2
13:10Skysat 13 (Skysat C11)429872017-068A2020 Jul 3445 x 458 km, 93.6 min, 97°.2
13:10Skysat 9 (Skysat C7)429912017-068E2020 Jul 3450 x 453 km, 93.6 min, 97°.2
13:11Skysat 8 (Skysat C6)429922017-068F2020 Jul 3451 x 452 km, 93.6 min, 97°.2
13:31WorldView 1320602007-041A2020 Jul 3492 x 493 km, 94.5 min, 97°.4
13:46ACRIMSAT260331999-070B2020 Jul 3665 x 706 km, 98.5 min, 98°.1
13:54TIROS 1014301965-051A2020 Jul 3717 x 799 km, 100.0 min, 98°.3
13:55TOMS-EP239401996-037A2020 Jul 3687 x 729 km, 98.9 min, 98°.2
17:41IRIS (Interface Region Imaging Spectrometer)391972013-033A2020 Jul 3614 x 653 km, 97.4 min, 98°.0
17:43IRAS137771983-004A2020 Jul 3879 x 906 km, 102.8 min, 99°.0
17:56DMSP 5D-2 F-6137361982-118A2020 Jul 3789 x 799 km, 100.7 min, 98°.6
18:03USA 26 (DMSP 5D-2 F-8)181231987-053A2020 Jul 3821 x 838 km, 101.5 min, 98°.7
18:13TRACE252801998-020A2020 Jul 3509 x 542 km, 95.1 min, 97°.5
18:27AMS 3 (DMSP 5D-1 F-3)108201978-042A2020 Jul 3767 x 781 km, 100.3 min, 98°.5
18:31DMSP 5C F-278161975-043A2020 Jul 3775 x 851 km, 101.1 min, 98°.8
18:48DMSP 5B F-362751972-089A2020 Jul 3774 x 824 km, 100.8 min, 98°.5
18:51DMSP 5C F-174111974-063A2020 Jul 3770 x 828 km, 100.8 min, 98°.7
19:53DMSP 2 F-3 (DAPP 15)21251966-026A2020 Jul 3594 x 814 km, 98.9 min, 98°.1
20:13DMSP 5A F-340471969-062A2020 Jul 3764 x 828 km, 100.8 min, 98°.7
20:17USA 216 (SBSS)371682010-048A2020 Jul 3624 x 625 km, 97.2 min, 97°.9
20:25DMSP 5A F-132661968-042A2020 Jul 3802 x 880 km, 101.7 min, 98°.8
20:32DMSP 4A F-929201967-080A2020 Jul 3815 x 872 km, 101.8 min, 98°.9
22:44Nimbus 6 (Nimbus F)79241975-052A2020 Jul 31100 x 1113 km, 107.4 min, 100°.1
23:13SECOR 13 (EGRS 13)38911969-037B2020 Jul 31069 x 1128 km, 107.2 min, 99°.9
23:16TOPO 143631970-025B2020 Jul 31084 x 1086 km, 106.9 min, 100°.0
23:22Nimbus 3 (Nimbus B2)38901969-037A2020 Jul 31071 x 1129 km, 107.3 min, 99°.9
23:23Nimbus 5 (Nimbus E)63051972-097A2020 Jul 31087 x 1101 km, 107.1 min, 99°.9
23:39Nimbus 4 (Nimbus D)43621970-025A2020 Jul 31087 x 1097 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 Jul 3
SpaceTrack - updated: 2020 Jul 4

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