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Orbits


Tyneside, UK
2023 Sep 24
Sunday, Day 267

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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.

Updated: 2023 Sep 24, 05:48 UTC

LTDN Satellite Cat
no
Desig- nation Orbit
Epoch
Orbit
00:05ESSA 220911966-016A2023 Sep 231354 x 1415 km, 113.4 min, 101°.2
00:26Perseus-M 1400392014-033AF2023 Sep 23593 x 612 km, 96.7 min, 97°.9
00:39Perseus-M 2400372014-033AD2023 Sep 23592 x 611 km, 96.7 min, 97°.9
01:23NOAA 21 (Joint Polar Satellite System 2)542342022-150A2023 Sep 23826 x 828 km, 101.4 min, 98°.7
01:25Suomi NPP (Suomi National Polar-orbiting Partnership)378492011-061A2023 Sep 23826 x 828 km, 101.4 min, 98°.7
01:25NOAA 20 (JPSS, Joint Polar Satellite System 1)430132017-073A2023 Sep 23826 x 828 km, 101.4 min, 98°.7
01:33Amsat Echo (AO-51)283752004-025K2023 Sep 23693 x 808 km, 99.8 min, 98°.5
01:35OCO 2 (Orbiting Carbon Observatory)400592014-035A2023 Sep 23701 x 703 km, 98.8 min, 98°.2
01:40MSX238511996-024A2023 Sep 23894 x 906 km, 103.0 min, 98°.9
01:47Aura (EOS Chem-1)283762004-026A2023 Sep 23700 x 701 km, 98.8 min, 98°.2
01:54Aqua (EOS PM-1)274242002-022A2023 Sep 23698 x 699 km, 98.7 min, 98°.3
02:03NOAA 17274532002-032A2023 Sep 23799 x 816 km, 101.0 min, 98°.7
02:11ESSA 836151968-114A2023 Sep 231413 x 1464 km, 114.6 min, 101°.6
02:43AMS 4 (DMSP 5D-1 F-4)113891979-050A2023 Sep 23789 x 805 km, 100.8 min, 98°.5
02:49EO-1266192000-075A2023 Sep 23667 x 682 km, 98.2 min, 98°.0
03:01Landsat 3107021978-026A2023 Sep 23894 x 916 km, 103.1 min, 98°.9
03:35NOAA 5 (ITOS H)90571976-077A2023 Sep 231508 x 1524 km, 116.3 min, 102°.2
03:55USA 210 (DMSP 5D-3 F-18)359512009-057A2023 Sep 23839 x 854 km, 101.8 min, 98°.8
04:33NOAA 10169691986-073A2023 Sep 23788 x 806 km, 100.8 min, 98°.6
05:07NOAA 12212631991-032A2023 Sep 23794 x 815 km, 101.0 min, 98°.5
05:16NOAA 8139231983-022A2023 Sep 23785 x 805 km, 100.8 min, 98°.7
05:19GAzelle540232022-127A2023 Sep 23743 x 761 km, 99.9 min, 98°.3
05:36Starlink 6038563172023-058A2023 Sep 23560 x 566 km, 95.9 min, 97°.7
05:45USA 249 (DMSP 5D-3 F-19)396302014-015A2023 Sep 23837 x 853 km, 101.8 min, 98°.8
05:58SMAP (Soil Moisture Active Passive)403762015-003A2023 Sep 23682 x 683 km, 98.4 min, 98°.1
06:00COBE203221989-089A2023 Sep 23870 x 883 km, 102.5 min, 98°.9
06:03Coriolis276402003-001A2023 Sep 23818 x 838 km, 101.5 min, 98°.7
06:03QuakeSat278452003-031F2023 Sep 23809 x 821 km, 101.2 min, 98°.7
06:05USA 109 (DMSP 5D-2 F-13)235331995-015A2023 Sep 23832 x 844 km, 101.7 min, 98°.8
06:20QBScout 1394432013-066AD2023 Sep 23519 x 539 km, 95.2 min, 97°.4
06:21USA 191 (DMSP 5D-3 F-17)295222006-050A2023 Sep 23837 x 852 km, 101.8 min, 98°.8
06:43NOAA 6114161979-057A2023 Sep 23771 x 785 km, 100.4 min, 98°.7
07:27NOAA 15253381998-030A2023 Sep 23796 x 812 km, 101.0 min, 98°.6
07:31USA 73 (DMSP 5D-2 F-11)217981991-082A2023 Sep 23827 x 845 km, 101.6 min, 98°.8
07:44WISE (Wide Field IR Explorer)361192009-071A2023 Sep 23428 x 433 km, 93.2 min, 97°.2
08:11USA 186 (KH- 11 Block-4 F1?/Crystal)288882005-042A2023 Sep 20382 x 420 km, 92.6 min, 97°.1
08:20USA 131 (DMSP 5D-2 F-14)247531997-012A2023 Sep 23831 x 845 km, 101.7 min, 98°.9
09:08USA 106 (DMSP 5D-2 S-12)232331994-057A2023 Sep 23832 x 847 km, 101.7 min, 98°.8
09:19ITOS 143201970-008A2023 Sep 231433 x 1478 km, 115.0 min, 101°.5
09:20XR-1475072021-006CY2023 Sep 23488 x 504 km, 94.5 min, 97°.4
09:21NOAA 1 (ITOS A)47931970-106A2023 Sep 231423 x 1473 km, 114.8 min, 101°.5
09:23Skysat 7 (Skysat C5)417722016-058C2023 Sep 23460 x 463 km, 93.8 min, 97°.2
09:27Lynk Tower 4550342023-001AB2023 Sep 23513 x 531 km, 95.1 min, 97°.5
09:28Lynk Tower 3550462023-001AP2023 Sep 23512 x 530 km, 95.1 min, 97°.5
09:28Vigoride 5550562023-001AZ2023 Sep 23511 x 529 km, 95.0 min, 97°.5
09:30ICEYE X21550492023-001AS2023 Sep 23502 x 519 km, 94.8 min, 97°.5
09:31ICEYE X27550622023-001BF2023 Sep 23500 x 518 km, 94.8 min, 97°.5
09:32Skysat 5 (Skysat C3)417742016-058E2023 Sep 23428 x 441 km, 93.3 min, 97°.1
09:32SkySat 15 (Skysat C13)438022018-099AW2023 Sep 23426 x 440 km, 93.2 min, 97°.1
09:32BlackSky 2 (Global 2)438122018-099BG2023 Sep 23558 x 578 km, 96.0 min, 97°.6
09:32Lemur-2 (SteveAlbers)550172023-001J2023 Sep 23491 x 503 km, 94.5 min, 97°.5
09:32Flock 4Y-24550202023-001M2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:32Flock 4Y-32550212023-001N2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:32Flock 4Y-22550222023-001P2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:32Flock 4Y-14550242023-001R2023 Sep 23498 x 514 km, 94.7 min, 97°.5
09:32Flock 4Y-19550262023-001T2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:32Flock 4Y-25550272023-001U2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:32Flock 4Y-5550282023-001V2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:32Flock 4Y-29550302023-001X2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:32Flock 4Y-7550322023-001Z2023 Sep 23497 x 514 km, 94.7 min, 97°.5
09:32Flock 4Y-3550352023-001AC2023 Sep 23496 x 515 km, 94.7 min, 97°.5
09:32Flock 4Y-33550422023-001AK2023 Sep 23497 x 513 km, 94.7 min, 97°.5
09:32Flock 4Y-11550432023-001AL2023 Sep 23500 x 516 km, 94.8 min, 97°.5
09:32Flock 4Y-15550682023-001BM2023 Sep 23495 x 516 km, 94.7 min, 97°.5
09:32Flock 4Y-26550702023-001BP2023 Sep 23495 x 515 km, 94.7 min, 97°.5
09:33Lemur-2 (Philari)550132023-001E2023 Sep 23488 x 499 km, 94.5 min, 97°.5
09:33Flock 4Y-18550232023-001Q2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:33Flock 4Y-30550252023-001S2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:33Flock 4Y-10550292023-001W2023 Sep 23498 x 513 km, 94.7 min, 97°.5
09:33Flock 4Y-17550312023-001Y2023 Sep 23497 x 513 km, 94.7 min, 97°.5
09:33Flock 4Y-16550402023-001AH2023 Sep 23497 x 513 km, 94.7 min, 97°.5
09:33Flock 4Y-4550552023-001AY2023 Sep 23496 x 514 km, 94.7 min, 97°.5
09:33Flock 4Y-35550572023-001BA2023 Sep 23497 x 514 km, 94.7 min, 97°.5
09:33Flock 4Y-20550632023-001BG2023 Sep 23496 x 516 km, 94.7 min, 97°.5
09:33Flock 4Y-12550652023-001BJ2023 Sep 23496 x 515 km, 94.7 min, 97°.5
09:33Flock 4Y-6550662023-001BK2023 Sep 23496 x 515 km, 94.7 min, 97°.5
09:33Flock 4Y-9550692023-001BN2023 Sep 23496 x 516 km, 94.7 min, 97°.5
09:33Flock 4Y-8550712023-001BQ2023 Sep 23494 x 514 km, 94.7 min, 97°.5
09:33Flock 4Y-2550742023-001BT2023 Sep 23496 x 516 km, 94.7 min, 97°.5
09:33Flock 4Y-31550752023-001BU2023 Sep 23489 x 508 km, 94.6 min, 97°.5
09:33Flock 4Y-21550772023-001BW2023 Sep 23496 x 516 km, 94.7 min, 97°.5
09:33Flock 4Y-36550782023-001BX2023 Sep 23495 x 515 km, 94.7 min, 97°.5
09:33Flock 4Y-13550792023-001BY2023 Sep 23496 x 516 km, 94.7 min, 97°.5
09:33Flock 4Y-23550802023-001BZ2023 Sep 23495 x 516 km, 94.7 min, 97°.5
09:33Flock 4Y-34550822023-001CB2023 Sep 23495 x 516 km, 94.7 min, 97°.5
09:33Flock 4Y-27550832023-001CC2023 Sep 23494 x 515 km, 94.7 min, 97°.5
09:34Lemur-2 (Disclaimer)550142023-001F2023 Sep 23489 x 502 km, 94.5 min, 97°.5
09:34Flock 4Y-28550332023-001AA2023 Sep 23489 x 502 km, 94.5 min, 97°.5
09:36Starlink 4391531892022-084A2023 Sep 23562 x 564 km, 95.9 min, 97°.7
09:36Lemur-2 (Fuentetaja-01)550882023-001CH2023 Sep 23484 x 501 km, 94.5 min, 97°.5
09:38Lemur-2 (Mmolo)550382023-001AF2023 Sep 23478 x 497 km, 94.4 min, 97°.5
09:38ION SCV-007 (Glorious Gratia)550602023-001BD2023 Sep 23637 x 654 km, 97.6 min, 98°.0
09:42USA 245 (KH-11 Block-4 F3?/Crystal)392322013-043A2023 Sep 20263 x 994 km, 97.3 min, 97°.9
09:42Cesium 1A492612021-088B2023 Sep 23534 x 563 km, 95.6 min, 97°.5
09:43STPSat-5437622018-099E2023 Sep 23559 x 574 km, 96.0 min, 97°.6
09:44Cesium 1B492622021-088C2023 Sep 23535 x 559 km, 95.6 min, 97°.5
09:45ION SCV-004 (Elysian Eleonora)509932022-002K2023 Sep 23515 x 525 km, 95.0 min, 97°.4
09:45USA 320 (Starshield)510752022-002CV2023 Sep 23525 x 531 km, 95.2 min, 97°.4
09:47CuPID (Cusp Plasma Imaging Detector)492642021-088E2023 Sep 23535 x 559 km, 95.6 min, 97°.5
09:50Skysat 1394182013-066C2023 Sep 23540 x 577 km, 95.8 min, 97°.5
09:54ION SCV-001 (Lucas)462742020-061C2023 Sep 23493 x 499 km, 94.5 min, 97°.3
09:54Athena462752020-061D2023 Sep 23498 x 500 km, 94.6 min, 97°.3
09:54CUTE (Colorado Ultraviolet Transit Experiment)492632021-088D2023 Sep 23524 x 545 km, 95.3 min, 97°.5
09:57Umbra 02509862022-002C2023 Sep 23517 x 521 km, 95.0 min, 97°.4
10:01Terra (EOS AM-1)259941999-068A2023 Sep 23693 x 698 km, 98.7 min, 98°.1
10:02Orbcomm-X (Orbcomm-X)215761991-050C2023 Sep 23749 x 753 km, 99.8 min, 98°.4
10:04Lemur-2 + OroraTech 1 (Rohovithsa)510362022-002BE2023 Sep 23475 x 483 km, 94.2 min, 97°.4
10:04Lemur-2 (Djirang)510582022-002CC2023 Sep 23473 x 480 km, 94.1 min, 97°.4
10:05Lemur-2 (Miriwari)510542022-002BY2023 Sep 23473 x 480 km, 94.1 min, 97°.4
10:08Skysat 3 (Skysat C1)416012016-040C2023 Sep 23444 x 447 km, 93.5 min, 97°.1
10:12Landsat 8 (Landsat Data Continuity Mission)390842013-008A2023 Sep 23702 x 703 km, 98.8 min, 98°.2
10:12Landsat 9492602021-088A2023 Sep 23702 x 703 km, 98.8 min, 98°.2
10:27Geoeye 1333312008-042A2023 Sep 23675 x 683 km, 98.3 min, 98°.1
10:27Worldview 3401152014-048A2023 Sep 23613 x 616 km, 97.0 min, 97°.8
10:29WorldView 2359462009-055A2023 Sep 23766 x 768 km, 100.2 min, 98°.4
10:33NOAA 18286542005-018A2023 Sep 23838 x 860 km, 101.9 min, 98°.9
10:35ION SCV-008 (Fierce Franciscus)550512023-001AU2023 Sep 23521 x 541 km, 95.3 min, 97°.6
10:50GNOMES 3 (GNSS Navigation and Occultation Measurement Satellite)521582022-033B2023 Sep 23630 x 647 km, 97.5 min, 97°.9
10:51Lynk Tower 1521622022-033F2023 Sep 23476 x 489 km, 94.3 min, 97°.3
11:02Spark 1 (LEO 1)521572022-033A2023 Sep 23615 x 632 km, 97.2 min, 97°.9
11:06MyRadar 1524192022-047AB2023 Sep 23478 x 487 km, 94.3 min, 97°.4
12:05USA 326514452022-009A2023 Sep 7499 x 503 km, 94.6 min, 97°.4
12:06USA 205 (STSS-ATRR)349032009-023A2023 Sep 11864 x 877 km, 102.4 min, 98°.9
12:59USA 314 (KH-11 Block-5 F-2/Crystal)482472021-032A2023 Sep 15552 x 767 km, 97.9 min, 98°.0
13:12TIROS 1014301965-051A2023 Sep 23716 x 796 km, 100.0 min, 98°.4
13:16Vigoride 3527602022-057AE2023 Sep 23511 x 526 km, 95.0 min, 97°.6
13:17Hawk 5B (Josh Chavez, Cluster 5 #2)527562022-057AA2023 Sep 23505 x 518 km, 94.9 min, 97°.5
13:18Sherpa AC-1527632022-057AH2023 Sep 23508 x 523 km, 94.9 min, 97°.6
13:19Hawk 5A (Alex Witko, Cluster 5 #1)527572022-057AB2023 Sep 23505 x 519 km, 94.9 min, 97°.6
13:20ICEYE X18527492022-057T2023 Sep 23501 x 524 km, 94.9 min, 97°.5
13:21Hawk 5C (Mina Shawky, Cluster 5 #3)527542022-057Y2023 Sep 23506 x 518 km, 94.9 min, 97°.6
13:21ICEYE X19527582022-057AC2023 Sep 23497 x 520 km, 94.8 min, 97°.5
13:30WorldView 1320602007-041A2023 Sep 23491 x 495 km, 94.5 min, 97°.4
13:36Starlink 4415534652022-099A2023 Sep 23562 x 563 km, 95.9 min, 97°.7
13:44Skysat 11 (Skysat C9)429892017-068C2023 Sep 23456 x 497 km, 94.1 min, 97°.3
13:49Starlink 3003488792021-059A2023 Sep 23562 x 564 km, 95.9 min, 97°.7
13:49Starlink 3004488802021-059B2023 Sep 23562 x 564 km, 95.9 min, 97°.7
13:49Starlink 3005488812021-059C2023 Sep 23562 x 564 km, 95.9 min, 97°.7
13:50ACRIMSat (Active Cavity Radiometer Irradiance Monitor Satellite)260331999-070B2023 Sep 23663 x 702 km, 98.4 min, 98°.2
13:51Skysat 10 (Skysat C8)429902017-068D2023 Sep 23474 x 480 km, 94.1 min, 97°.3
13:51Skysat 9 (Skysat C7)429912017-068E2023 Sep 23473 x 480 km, 94.1 min, 97°.3
14:36USA 224 (KH- 11 Block-4 F2?/Crystal)373482011-002A2023 Sep 22257 x 1005 km, 97.3 min, 97°.9
17:21ANDESITE (nonsensical acronym)457262020-037D2023 Sep 23573 x 590 km, 96.3 min, 97°.8
17:23DMSP 5B F-3 (Defense Meteorological Satellite Program)62751972-089A2023 Sep 23771 x 822 km, 100.8 min, 98°.5
17:25IRAS137771983-004A2023 Sep 23878 x 906 km, 102.8 min, 99°.0
17:36Starlink 4362530432022-077A2023 Sep 23561 x 565 km, 95.9 min, 97°.7
17:55DMSP 5D-2 F-6 (Defense Meteorological Satellite Program)137361982-118A2023 Sep 23787 x 799 km, 100.7 min, 98°.6
17:55USA 26 (DMSP 5D-2 F-8)181231987-053A2023 Sep 23819 x 838 km, 101.5 min, 98°.7
18:03Victus Nox (TacRS 3)578612023-142A2023 Sep 23451 x 530 km, 94.4 min, 97°.3
18:04TRACE252801998-020A2023 Sep 23481 x 507 km, 94.5 min, 97°.5
18:06IRIS (Interface Region Imaging Spectrometer)391972013-033A2023 Sep 23609 x 646 km, 97.3 min, 98°.0
18:34AMS 3 (DMSP 5D-1 F-3)108201978-042A2023 Sep 23764 x 779 km, 100.3 min, 98°.5
18:34GNOMES 1 (GNSS Navigation and Occultation Measurement Satellite)462662020-059B2023 Sep 23590 x 599 km, 96.6 min, 97°.9
19:14DMSP 5C F-2 (Defense Meteorological Satellite Program)78161975-043A2023 Sep 23774 x 849 km, 101.1 min, 98°.7
19:15DMSP 5C F-1 (Defense Meteorological Satellite Program)74111974-063A2023 Sep 23766 x 827 km, 100.8 min, 98°.6
19:42DMSP 5A F-1 (Defense Meteorological Satellite Program)32661968-042A2023 Sep 23803 x 878 km, 101.7 min, 98°.6
20:03USA 216 (SBSS)371682010-048A2023 Sep 23619 x 622 km, 97.1 min, 97°.9
20:34DMSP 4A F-9 (Defense Meteorological Satellite Program)29201967-080A2023 Sep 23815 x 870 km, 101.8 min, 98°.7
20:38DMSP 5A F-3 (Defense Meteorological Satellite Program)40471969-062A2023 Sep 23764 x 827 km, 100.8 min, 98°.6
21:10QuikScat257891999-034A2023 Sep 23655 x 796 km, 99.3 min, 98°.4
21:36Starlink 4622536482022-105A2023 Sep 23562 x 564 km, 95.9 min, 97°.7
22:23Umbra 06561982023-054W2023 Sep 23520 x 524 km, 95.1 min, 97°.4
22:24SECOR 13 (EGRS 13)38911969-037B2023 Sep 231069 x 1128 km, 107.2 min, 99°.8
22:25ION SCV-010 (Masterful Matthaeus)561922023-054Q2023 Sep 23548 x 564 km, 95.8 min, 97°.5
22:30Hawk 7B561932023-054R2023 Sep 23497 x 509 km, 94.7 min, 97°.4
22:31Lemur 2 (KAUST, OnReflection)561822023-054E2023 Sep 23480 x 494 km, 94.3 min, 97°.4
22:31Hawk 7A561912023-054P2023 Sep 23496 x 510 km, 94.7 min, 97°.4
22:31GHOSt 1 (Global Hyperspectral Observation Satellite)561952023-054T2023 Sep 23485 x 501 km, 94.5 min, 97°.4
22:31Hawk 7C562002023-054Y2023 Sep 23496 x 510 km, 94.7 min, 97°.4
22:31Kepler 21562182023-054AS2023 Sep 23488 x 502 km, 94.5 min, 97°.4
22:32Lemur-2 + Adler 2 (SpaceGus)561872023-054K2023 Sep 23478 x 492 km, 94.3 min, 97°.4
22:32Vigoride 6561962023-054U2023 Sep 23479 x 496 km, 94.4 min, 97°.4
22:32GHOSt 2 (Global Hyperspectral Observation Satellite)561972023-054V2023 Sep 23483 x 500 km, 94.4 min, 97°.4
22:32Tomorrow R1561992023-054X2023 Sep 23480 x 498 km, 94.4 min, 97°.4
22:32Kepler 20562172023-054AR2023 Sep 23484 x 501 km, 94.5 min, 97°.4
22:44Nimbus 3 (Nimbus B2)38901969-037A2023 Sep 231071 x 1129 km, 107.3 min, 99°.8
23:16Nimbus 5 (Nimbus E)63051972-097A2023 Sep 231087 x 1101 km, 107.1 min, 99°.9
23:25Nimbus 6 (Nimbus F)79241975-052A2023 Sep 231100 x 1113 km, 107.4 min, 100°.0
23:39TOPO 143631970-025B2023 Sep 231084 x 1086 km, 106.9 min, 99°.9
23:59Nimbus 4 (Nimbus D)43621970-025A2023 Sep 231087 x 1097 km, 107.1 min, 99°.9

For the satellites that do not have formal published elements, thanks go to the radio and visual amateur satellite trackers for their observing, and particularly to Mike McCants for archiving the derived orbits.

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