Zarya - Soviet, Russian and International Spaceflight
carousel image
 
Orbits


Tyneside, UK
2020 Jan 18
Saturday, Day 18

Maintained by:






Lists Available:












Other orbits:





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
00:54Amsat Echo (AO-51)283752004-025K2020 Jan 17694 x 810 km, 99.9 min, 98°.4
01:04ESSA 220911966-016A2020 Jan 171354 x 1414 km, 113.4 min, 101°.2
01:24NOAA 20 (JPSS 1)430132017-073A2020 Jan 17826 x 828 km, 101.4 min, 98°.7
01:24Suomi NPP (Suomi National Polar-orbiting Partnership)378492011-061A2020 Jan 17826 x 828 km, 101.4 min, 98°.7
01:26WESTPAC253981998-043E2020 Jan 17814 x 817 km, 101.2 min, 98°.7
01:35Aqua (EOS PM-1)274242002-022A2020 Jan 17701 x 705 km, 98.8 min, 98°.2
01:35OCO 2 (Orbiting Carbon Observatory)400592014-035A2020 Jan 17702 x 703 km, 98.8 min, 98°.2
01:44Aura (EOS Chem-1)283762004-026A2020 Jan 17702 x 704 km, 98.8 min, 98°.2
01:48Fedsat275982002-056B2020 Jan 17790 x 803 km, 100.8 min, 98°.6
01:55Calipso (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations)291082006-016B2020 Jan 17685 x 686 km, 98.5 min, 98°.2
01:56Cloudsat291072006-016A2020 Jan 17684 x 687 km, 98.5 min, 98°.2
02:04NOAA 17 (NOAA M)274532002-032A2020 Jan 17800 x 816 km, 101.0 min, 98°.6
02:30Oscar 8 (AO-8)107031978-026B2020 Jan 17893 x 900 km, 102.9 min, 99°.0
03:25NOAA 2 (ITOS D)62351972-082A2020 Jan 171448 x 1455 km, 114.9 min, 101°.8
03:27NOAA 4 (ITOS G)75291974-089A2020 Jan 171444 x 1459 km, 114.9 min, 101°.8
03:27Oscar 7 (AO-7)75301974-089B2020 Jan 171440 x 1459 km, 114.9 min, 101°.8
03:29NOAA 5 (ITOS H)90571976-077A2020 Jan 171508 x 1524 km, 116.3 min, 102°.0
03:33NOAA 3 (ITOS F)69201973-086A2020 Jan 171500 x 1510 km, 116.1 min, 102°.1
03:35Oscar 6 (AO-6)62361972-082B2020 Jan 171448 x 1455 km, 114.9 min, 101°.9
04:03USA 172 (DMSP 5D-3 F-16)280542003-048A2020 Jan 17842 x 852 km, 101.9 min, 98°.9
04:33NOAA 8 (NOAA E)139231983-022A2020 Jan 17786 x 806 km, 100.8 min, 98°.6
05:06NOAA 10 (NOAA G)169691986-073A2020 Jan 17789 x 807 km, 100.8 min, 98°.5
05:19NOAA 6 (NOAA A)114161979-057A2020 Jan 17773 x 787 km, 100.4 min, 98°.7
05:39USA 109 (DMSP 5D-2 F-13)235331995-015A2020 Jan 17834 x 844 km, 101.7 min, 98°.8
05:59SMAP (Soil Moisture Active Passive)403762015-003A2020 Jan 17681 x 684 km, 98.4 min, 98°.1
06:06Microsat 2A (Tintin A)432162018-020B2020 Jan 17494 x 513 km, 94.7 min, 97°.5
06:08Microsat 2B (Tintin B)432172018-020C2020 Jan 17495 x 512 km, 94.7 min, 97°.5
06:09QuakeSat278452003-031F2020 Jan 17811 x 825 km, 101.2 min, 98°.7
06:11Coriolis276402003-001A2020 Jan 17818 x 840 km, 101.5 min, 98°.7
06:19USA 249 (DMSP 5D-3 F-19)396302014-015A2020 Jan 17838 x 854 km, 101.8 min, 98°.8
06:21NOAA 12 (NOAA D)212631991-032A2020 Jan 17795 x 816 km, 101.0 min, 98°.5
06:29COBE203221989-089A2020 Jan 17870 x 884 km, 102.5 min, 98°.9
06:38USA 191 (DMSP 5D-3 F-17)295222006-050A2020 Jan 17839 x 852 km, 101.8 min, 98°.8
07:07NOAA 15 (NOAA K)253381998-030A2020 Jan 17798 x 813 km, 101.0 min, 98°.7
07:57WISE (Wide Field IR Explorer)361192009-071A2020 Jan 17474 x 478 km, 94.1 min, 97°.3
08:02USA 186 (KH- 11 Block-4 F1?/Crystal)288882005-042A2019 Oct 7261 x 450 km, 91.7 min, 96°.9
09:16ESSA 937641969-016A2020 Jan 171425 x 1505 km, 115.2 min, 101°.6
09:24TIROS-N110601978-096A2020 Jan 17823 x 839 km, 101.5 min, 98°.8
09:27Pathfinder 1417872016-059E2020 Jan 17659 x 704 km, 98.4 min, 98°.0
09:41CEPE (Cylindrical Electrostatic Probe Experiment)47941970-106B2020 Jan 171422 x 1480 km, 114.9 min, 101°.6
09:41USA 245 (KH- 11 Block-4 F3?/Crystal)392322013-043A2019 Oct 4266 x 999 km, 97.4 min, 97°.9
09:44Oscar 5 (Australis Oscar 5)43211970-008B2020 Jan 171433 x 1477 km, 115.0 min, 101°.6
09:52Landsat 7256821999-020A2020 Jan 17701 x 703 km, 98.8 min, 98°.1
10:06NOAA 1 (ITOS A)47931970-106A2020 Jan 171423 x 1473 km, 114.8 min, 101°.7
10:09ITOS 143201970-008A2020 Jan 171433 x 1478 km, 115.0 min, 101°.7
10:12Landsat 8 (Landsat Data Continuity Mission)390842013-008A2020 Jan 17702 x 703 km, 98.8 min, 98°.2
10:14NOAA 16 (NOAA L)265362000-055A2020 Jan 17840 x 856 km, 101.9 min, 98°.8
10:14Skysat 6 (Skysat C5)417722016-058C2020 Jan 17493 x 496 km, 94.5 min, 97°.4
10:16Skysat 7 (Skysat C4)417712016-058B2020 Jan 17494 x 496 km, 94.5 min, 97°.4
10:17Skysat 4 (Skysat C2)417732016-058D2020 Jan 17494 x 496 km, 94.5 min, 97°.4
10:17Skysat 5 (Skysat C3)417742016-058E2020 Jan 17494 x 496 km, 94.5 min, 97°.4
10:22STPSat-5437622018-099E2020 Jan 17570 x 589 km, 96.3 min, 97°.7
10:30Geoeye 1333312008-042A2020 Jan 17672 x 686 km, 98.3 min, 98°.1
10:30Terra (EOS AM-1)259941999-068A2020 Jan 17702 x 704 km, 98.8 min, 98°.2
10:30WorldView 2359462009-055A2020 Jan 17764 x 768 km, 100.2 min, 98°.4
10:41Worldview 3401152014-048A2020 Jan 17612 x 615 km, 97.0 min, 97°.8
10:45LKW-2 (Land Survey Satellite 2)430802017-084A2020 Jan 17489 x 503 km, 94.5 min, 97°.4
10:46Skysat 3 (Skysat Gen 2-1)416012016-040C2020 Jan 17493 x 496 km, 94.5 min, 97°.4
10:55Skysat 1394182013-066C2020 Jan 17555 x 585 km, 96.1 min, 97°.6
12:01USA 205 (STSS-ATRR)349032009-023A2019 Sep 27866 x 876 km, 102.4 min, 98°.9
12:56USA 224 (KH- 11 Block-4 F2?/Crystal)373482011-002A2019 Aug 27259 x 1010 km, 97.4 min, 97°.9
13:01OrbView-2248831997-037A2020 Jan 17778 x 782 km, 100.5 min, 98°.6
13:08Skysat C9429892017-068C2020 Jan 17450 x 455 km, 93.6 min, 97°.2
13:09Skysat C10429882017-068B2020 Jan 17487 x 489 km, 94.4 min, 97°.4
13:09Skysat C11429872017-068A2020 Jan 17479 x 489 km, 94.3 min, 97°.4
13:10Skysat C7429912017-068E2020 Jan 17470 x 471 km, 94.0 min, 97°.3
13:10Skysat C8429902017-068D2020 Jan 17465 x 473 km, 94.0 min, 97°.3
13:11Skysat C6429922017-068F2020 Jan 17473 x 479 km, 94.1 min, 97°.3
13:32WorldView 1320602007-041A2020 Jan 17491 x 494 km, 94.5 min, 97°.4
13:51ACRIMSAT260331999-070B2020 Jan 17667 x 705 km, 98.5 min, 98°.1
13:56TOMS-EP239401996-037A2020 Jan 17689 x 728 km, 99.0 min, 98°.2
17:39IRIS (Interface Region Imaging Spectrometer)391972013-033A2020 Jan 17614 x 653 km, 97.4 min, 98°.0
17:47IRAS137771983-004A2020 Jan 17879 x 905 km, 102.8 min, 99°.0
17:56DMSP 5D-2 F-6137361982-118A2020 Jan 17788 x 800 km, 100.7 min, 98°.6
18:04USA 26 (DMSP 5D-2 F-8)181231987-053A2020 Jan 17820 x 840 km, 101.5 min, 98°.7
18:16TRACE252801998-020A2020 Jan 17510 x 542 km, 95.2 min, 97°.5
18:22DMSP 5C F-278161975-043A2020 Jan 17774 x 851 km, 101.1 min, 98°.8
18:24AMS 3 (DMSP 5D-1 F-3)108201978-042A2020 Jan 17767 x 782 km, 100.3 min, 98°.5
18:44DMSP 5C F-174111974-063A2020 Jan 17768 x 829 km, 100.8 min, 98°.7
18:58DMSP 5B F-362751972-089A2020 Jan 17773 x 825 km, 100.8 min, 98°.5
20:03DMSP 2 F-3 (DAPP 15)21251966-026A2020 Jan 17593 x 814 km, 98.9 min, 98°.1
20:15USA 216 (SBSS)371682010-048A2020 Jan 17623 x 626 km, 97.2 min, 97°.9
20:25DMSP 4A F-929201967-080A2020 Jan 17816 x 871 km, 101.8 min, 98°.9
20:25DMSP 5A F-132661968-042A2020 Jan 17803 x 880 km, 101.7 min, 98°.8
20:39NOOR 1A448272019-084D2020 Jan 17343 x 401 km, 92.0 min, 97°.0
20:40NOOR 1B448282019-084E2020 Jan 17336 x 388 km, 91.8 min, 97°.0
20:55USA 29 (DMSP 5D-2 F-9)188221988-006A2020 Jan 17796 x 806 km, 100.9 min, 98°.5
22:35Nimbus 6 (Nimbus F)79241975-052A2020 Jan 171100 x 1113 km, 107.4 min, 100°.1
23:11TOPO 143631970-025B2020 Jan 171084 x 1086 km, 106.9 min, 100°.0
23:17SECOR 13 (EGRS 13)38911969-037B2020 Jan 171069 x 1128 km, 107.2 min, 99°.9
23:22Nimbus 5 (Nimbus E)63051972-097A2020 Jan 171087 x 1101 km, 107.1 min, 99°.9
23:25Nimbus 3 (Nimbus B2)38901969-037A2020 Jan 171071 x 1129 km, 107.3 min, 99°.9
23:36Nimbus 4 (Nimbus D)43621970-025A2020 Jan 171087 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 Jan 17
SpaceTrack - updated: 2020 Jan 18

Copyright © Robert Christy, all rights reserved
Reproduction of this web page or any of its content without permission from zarya.info is prohibited