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Orbits


Tyneside, UK
2019 Sep 21
Saturday, Day 264

Maintained by:






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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)283752004-025K2019 Sep 20694 x 810 km, 99.9 min, 98°.4
01:11ESSA 220911966-016A2019 Sep 191355 x 1414 km, 113.4 min, 101°.2
01:24NOAA 20 (JPSS 1)430132017-073A2019 Sep 20826 x 828 km, 101.4 min, 98°.7
01:25Suomi NPP (Suomi National Polar-orbiting Partnership)378492011-061A2019 Sep 20826 x 828 km, 101.4 min, 98°.7
01:25WESTPAC253981998-043E2019 Sep 20814 x 818 km, 101.2 min, 98°.7
01:35Aqua (EOS PM-1)274242002-022A2019 Sep 20701 x 705 km, 98.8 min, 98°.2
01:35OCO 2 (Orbiting Carbon Observatory)400592014-035A2019 Sep 20701 x 704 km, 98.8 min, 98°.2
01:44Aura (EOS Chem-1)283762004-026A2019 Sep 20701 x 704 km, 98.8 min, 98°.2
01:51Calipso (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations)291082006-016B2019 Sep 20685 x 687 km, 98.5 min, 98°.2
01:51Fedsat275982002-056B2019 Sep 20790 x 802 km, 100.8 min, 98°.5
01:52Cloudsat291072006-016A2019 Sep 20684 x 687 km, 98.5 min, 98°.2
02:09NOAA 17 (NOAA M)274532002-032A2019 Sep 20801 x 816 km, 101.0 min, 98°.5
02:12NOAA 9 (NOAA F)154271984-123A2019 Sep 20827 x 850 km, 101.7 min, 98°.9
02:31Oscar 8 (AO-8)107031978-026B2019 Sep 20892 x 900 km, 102.9 min, 99°.0
02:48ERTS 1 (ERTS A)61261972-058A2019 Sep 20896 x 909 km, 103.0 min, 99°.2
03:21NOAA 2 (ITOS D)62351972-082A2019 Sep 201449 x 1454 km, 114.9 min, 101°.8
03:24NOAA 4 (ITOS G)75291974-089A2019 Sep 201445 x 1458 km, 114.9 min, 101°.8
03:24Oscar 7 (AO-7)75301974-089B2019 Sep 201440 x 1459 km, 114.9 min, 101°.8
03:29Oscar 6 (AO-6)62361972-082B2019 Sep 201448 x 1455 km, 114.9 min, 101°.8
03:30NOAA 3 (ITOS F)69201973-086A2019 Sep 201500 x 1510 km, 116.1 min, 102°.1
03:33NOAA 5 (ITOS H)90571976-077A2019 Sep 201509 x 1524 km, 116.3 min, 101°.9
03:59USA 172 (DMSP 5D-3 F-16)280542003-048A2019 Sep 20842 x 852 km, 101.9 min, 98°.9
04:33NOAA 8 (NOAA E)139231983-022A2019 Sep 20786 x 806 km, 100.8 min, 98°.6
05:13NOAA 10 (NOAA G)169691986-073A2019 Sep 20789 x 807 km, 100.8 min, 98°.5
05:13NOAA 6 (NOAA A)114161979-057A2019 Sep 20773 x 787 km, 100.5 min, 98°.6
05:38USA 109 (DMSP 5D-2 F-13)235331995-015A2019 Sep 20835 x 844 km, 101.7 min, 98°.8
05:59SMAP (Soil Moisture Active Passive)403762015-003A2019 Sep 20681 x 684 km, 98.4 min, 98°.1
06:10QuakeSat278452003-031F2019 Sep 20811 x 825 km, 101.3 min, 98°.7
06:11Coriolis276402003-001A2019 Sep 19818 x 840 km, 101.5 min, 98°.7
06:22USA 249 (DMSP 5D-3 F-19)396302014-015A2019 Sep 20838 x 854 km, 101.8 min, 98°.8
06:28NOAA 12 (NOAA D)212631991-032A2019 Sep 20795 x 816 km, 101.0 min, 98°.5
06:31COBE203221989-089A2019 Sep 19870 x 884 km, 102.5 min, 98°.9
06:38USA 191 (DMSP 5D-3 F-17)295222006-050A2019 Sep 20839 x 852 km, 101.8 min, 98°.8
07:01NOAA 15 (NOAA K)253381998-030A2019 Sep 20798 x 812 km, 101.0 min, 98°.7
07:55WISE (Wide Field IR Explorer)361192009-071A2019 Sep 20476 x 477 km, 94.1 min, 97°.4
08:03USA 186 (KH- 11 Block-4 F1?/Crystal)288882005-042A2019 Sep 16263 x 451 km, 91.7 min, 96°.9
09:21ESSA 937641969-016A2019 Sep 191425 x 1505 km, 115.2 min, 101°.7
09:23TIROS-N110601978-096A2019 Sep 20823 x 840 km, 101.5 min, 98°.8
09:32Pathfinder 1417872016-059E2019 Sep 20659 x 703 km, 98.4 min, 98°.1
09:41USA 245 (KH- 11 Block-4 F3?/Crystal)392322013-043A2019 Sep 16267 x 1000 km, 97.4 min, 97°.9
09:45CEPE (Cylindrical Electrostatic Probe Experiment)47941970-106B2019 Sep 191422 x 1480 km, 114.9 min, 101°.6
09:48Oscar 5 (Australis Oscar 5)43211970-008B2019 Sep 191434 x 1477 km, 115.0 min, 101°.6
09:58Landsat 7256821999-020A2019 Sep 20702 x 703 km, 98.8 min, 98°.1
10:06NOAA 1 (ITOS A)47931970-106A2019 Sep 201423 x 1473 km, 114.8 min, 101°.7
10:10ITOS 143201970-008A2019 Sep 201433 x 1478 km, 115.0 min, 101°.7
10:12Landsat 8 (Landsat Data Continuity Mission)390842013-008A2019 Sep 20702 x 703 km, 98.8 min, 98°.2
10:14Skysat 6 (Skysat C5)417722016-058C2019 Sep 20494 x 497 km, 94.5 min, 97°.4
10:16Skysat 7 (Skysat C4)417712016-058B2019 Sep 20494 x 497 km, 94.5 min, 97°.4
10:17Skysat 4 (Skysat C2)417732016-058D2019 Sep 20494 x 497 km, 94.5 min, 97°.4
10:17Skysat 5 (Skysat C3)417742016-058E2019 Sep 19494 x 496 km, 94.5 min, 97°.4
10:18NOAA 16 (NOAA L)265362000-055A2019 Sep 20840 x 857 km, 101.9 min, 98°.8
10:22STPSat-5437622018-099E2019 Sep 20569 x 590 km, 96.3 min, 97°.7
10:29Geoeye 1333312008-042A2019 Sep 20673 x 685 km, 98.3 min, 98°.1
10:30Terra (EOS AM-1)259941999-068A2019 Sep 20702 x 703 km, 98.8 min, 98°.2
10:33WorldView 2359462009-055A2019 Sep 20764 x 768 km, 100.2 min, 98°.4
10:45LKW-2 (Land Survey Satellite 2)430802017-084A2019 Sep 20490 x 502 km, 94.5 min, 97°.4
10:45Worldview 3401152014-048A2019 Sep 20612 x 615 km, 97.0 min, 97°.8
10:47Skysat 3 (Skysat Gen 2-1)416012016-040C2019 Sep 20495 x 496 km, 94.5 min, 97°.4
10:58Skysat 1394182013-066C2019 Sep 20555 x 586 km, 96.1 min, 97°.6
12:01USA 205 (STSS-ATRR)349032009-023A2019 Sep 13866 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
12:57OrbView-2248831997-037A2019 Sep 20778 x 782 km, 100.5 min, 98°.6
13:07Skysat C10429882017-068B2019 Sep 20499 x 502 km, 94.6 min, 97°.4
13:07Skysat C11429872017-068A2019 Sep 20495 x 505 km, 94.6 min, 97°.4
13:09Skysat C6429922017-068F2019 Sep 20492 x 508 km, 94.6 min, 97°.4
13:09Skysat C7429912017-068E2019 Sep 20497 x 503 km, 94.6 min, 97°.4
13:09Skysat C8429902017-068D2019 Sep 20498 x 502 km, 94.6 min, 97°.4
13:09Skysat C9429892017-068C2019 Sep 20499 x 502 km, 94.6 min, 97°.4
13:31WorldView 1320602007-041A2019 Sep 20491 x 493 km, 94.5 min, 97°.4
13:56ACRIMSAT260331999-070B2019 Sep 20667 x 705 km, 98.5 min, 98°.0
13:57TOMS-EP239401996-037A2019 Sep 20689 x 728 km, 99.0 min, 98°.2
17:38IRIS (Interface Region Imaging Spectrometer)391972013-033A2019 Sep 20614 x 653 km, 97.4 min, 98°.0
17:50IRAS137771983-004A2019 Sep 20878 x 907 km, 102.8 min, 98°.9
17:57DMSP 5D-2 F-6137361982-118A2019 Sep 20789 x 799 km, 100.7 min, 98°.6
18:05USA 26 (DMSP 5D-2 F-8)181231987-053A2019 Sep 20820 x 840 km, 101.5 min, 98°.7
18:15DMSP 5C F-278161975-043A2019 Sep 20775 x 851 km, 101.1 min, 98°.8
18:19TRACE252801998-020A2019 Sep 19509 x 544 km, 95.2 min, 97°.5
18:22AMS 3 (DMSP 5D-1 F-3)108201978-042A2019 Sep 19767 x 782 km, 100.3 min, 98°.5
18:39DMSP 5C F-174111974-063A2019 Sep 20769 x 829 km, 100.8 min, 98°.7
19:06DMSP 5B F-362751972-089A2019 Sep 19773 x 825 km, 100.9 min, 98°.5
20:09DMSP 2 F-3 (DAPP 15)21251966-026A2019 Sep 20593 x 815 km, 98.9 min, 98°.1
20:14USA 216 (SBSS)371682010-048A2019 Sep 20623 x 626 km, 97.2 min, 97°.8
20:19DMSP 4A F-929201967-080A2019 Sep 20816 x 871 km, 101.8 min, 98°.9
20:23DMSP 5A F-132661968-042A2019 Sep 20803 x 880 km, 101.7 min, 98°.8
21:02USA 29 (DMSP 5D-2 F-9)188221988-006A2019 Sep 20796 x 806 km, 100.9 min, 98°.5
22:28Nimbus 6 (Nimbus F)79241975-052A2019 Sep 201100 x 1113 km, 107.4 min, 100°.1
23:07TOPO 143631970-025B2019 Sep 191084 x 1086 km, 106.9 min, 100°.0
23:19SECOR 13 (EGRS 13)38911969-037B2019 Sep 201069 x 1128 km, 107.2 min, 99°.9
23:21Nimbus 5 (Nimbus E)63051972-097A2019 Sep 201087 x 1101 km, 107.1 min, 99°.9
23:27Nimbus 3 (Nimbus B2)38901969-037A2019 Sep 191071 x 1129 km, 107.3 min, 99°.9
23:33Nimbus 4 (Nimbus D)43621970-025A2019 Sep 201087 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: 2019 Sep 18
SpaceTrack - updated: 2019 Sep 21

Copyright © Robert Christy, all rights reserved
Reproduction in whole or in part without permission is prohibited