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Orbits


Tyneside, UK
2024 May 20
Monday, Day 141

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Primary source of unclassified orbital elements

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

This a list of satellites in sun-synchronous orbit operated by the USA. 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: 2024 May 20, 02:48 UTC

LTDN Satellite Cat
no
Desig- nation Orbit
Epoch
Orbit
12:02USA 326514452022-009A2024 May 15497 x 510 km, 94.7 min, 97°.4
14:02ACRIMSat (Active Cavity Radiometer Irradiance Monitor Satellite)260331999-070B2024 May 19662 x 699 km, 98.4 min, 98°.2
18:34AMS 3 (DMSP 5D-1 F-3)108201978-042A2024 May 19762 x 777 km, 100.2 min, 98°.5
02:34AMS 4 (DMSP 5D-1 F-4)113891979-050A2024 May 19788 x 804 km, 100.8 min, 98°.5
17:27ANDESITE (nonsensical acronym)457262020-037D2024 May 19565 x 583 km, 96.2 min, 97°.8
02:25Aprizesat 8394252013-066K2024 May 19583 x 650 km, 97.0 min, 97°.7
09:45Athena462752020-061D2024 May 19486 x 487 km, 94.3 min, 97°.3
01:51Aura (EOS Chem-1)283762004-026A2024 May 19696 x 699 km, 98.7 min, 98°.2
10:34Barry 1583382023-174CL2024 May 19490 x 501 km, 94.5 min, 97°.5
09:33Cesium 1A492612021-088B2024 May 19521 x 548 km, 95.3 min, 97°.5
09:37Cesium 1B492622021-088C2024 May 19522 x 544 km, 95.3 min, 97°.5
05:54COBE203221989-089A2024 May 19869 x 883 km, 102.5 min, 98°.9
06:02Coriolis276402003-001A2024 May 19818 x 837 km, 101.4 min, 98°.7
09:40CuPID (Cusp Plasma Imaging Detector)492642021-088E2024 May 19524 x 548 km, 95.4 min, 97°.5
09:56CUTE (Colorado Ultraviolet Transit Experiment)492632021-088D2024 May 19500 x 521 km, 94.8 min, 97°.5
20:24DMSP 4A F-9 (Defense Meteorological Satellite Program)29201967-080A2024 May 19815 x 870 km, 101.8 min, 98°.7
14:08DMSP 5A F-2 (Defense Meteorological Satellite Program)35101968-092A2024 May 19777 x 821 km, 100.9 min, 98°.5
20:32DMSP 5A F-3 (Defense Meteorological Satellite Program)40471969-062A2024 May 19763 x 826 km, 100.8 min, 98°.5
17:08DMSP 5B F-3 (Defense Meteorological Satellite Program)62751972-089A2024 May 19770 x 821 km, 100.8 min, 98°.5
20:12DMSP 5B F-4 (Defense Meteorological Satellite Program)67871973-054A2024 May 19763 x 802 km, 100.5 min, 98°.7
19:13DMSP 5C F-1 (Defense Meteorological Satellite Program)74111974-063A2024 May 19765 x 826 km, 100.8 min, 98°.6
19:17DMSP 5C F-2 (Defense Meteorological Satellite Program)78161975-043A2024 May 19773 x 847 km, 101.1 min, 98°.7
07:33USA 73 (DMSP 5D-2 F-11)217981991-082A2024 May 19827 x 844 km, 101.6 min, 98°.8
06:10USA 109 (DMSP 5D-2 F-13)235331995-015A2024 May 19832 x 843 km, 101.7 min, 98°.8
08:31USA 131 (DMSP 5D-2 F-14)247531997-012A2024 May 19831 x 845 km, 101.7 min, 98°.9
17:55DMSP 5D-2 F-6 (Defense Meteorological Satellite Program)137361982-118A2024 May 19786 x 798 km, 100.7 min, 98°.6
17:55USA 26 (DMSP 5D-2 F-8)181231987-053A2024 May 19818 x 837 km, 101.5 min, 98°.7
09:10USA 106 (DMSP 5D-2 S-12)232331994-057A2024 May 19832 x 847 km, 101.7 min, 98°.8
06:16USA 191 (DMSP 5D-3 F-17)295222006-050A2024 May 19836 x 852 km, 101.8 min, 98°.7
03:54USA 210 (DMSP 5D-3 F-18)359512009-057A2024 May 19838 x 853 km, 101.8 min, 98°.8
05:39USA 249 (DMSP 5D-3 F-19)396302014-015A2024 May 19837 x 851 km, 101.8 min, 98°.8
02:38EO-1266192000-075A2024 May 19665 x 679 km, 98.2 min, 98°.0
23:57ESSA 220911966-016A2024 May 191354 x 1415 km, 113.4 min, 101°.3
02:06ESSA 836151968-114A2024 May 191414 x 1464 km, 114.6 min, 101°.6
09:40Flock 4Y-10550292023-001W2024 May 19477 x 488 km, 94.3 min, 97°.4
09:38Flock 4Y-11550432023-001AL2024 May 19481 x 493 km, 94.3 min, 97°.4
09:40Flock 4Y-12550652023-001BJ2024 May 19476 x 490 km, 94.3 min, 97°.4
09:40Flock 4Y-13550792023-001BY2024 May 19475 x 490 km, 94.3 min, 97°.4
09:39Flock 4Y-14550242023-001R2024 May 19478 x 489 km, 94.3 min, 97°.4
09:39Flock 4Y-15550682023-001BM2024 May 19475 x 490 km, 94.3 min, 97°.4
09:40Flock 4Y-16550402023-001AH2024 May 19476 x 488 km, 94.2 min, 97°.4
09:40Flock 4Y-17550312023-001Y2024 May 19477 x 488 km, 94.3 min, 97°.4
09:40Flock 4Y-18550232023-001Q2024 May 19477 x 488 km, 94.2 min, 97°.4
09:39Flock 4Y-19550262023-001T2024 May 19476 x 487 km, 94.2 min, 97°.4
09:40Flock 4Y-2550742023-001BT2024 May 19475 x 490 km, 94.3 min, 97°.4
09:40Flock 4Y-20550632023-001BG2024 May 19476 x 491 km, 94.3 min, 97°.4
09:40Flock 4Y-21550772023-001BW2024 May 19475 x 490 km, 94.3 min, 97°.4
09:39Flock 4Y-22550222023-001P2024 May 19478 x 489 km, 94.3 min, 97°.4
09:40Flock 4Y-23550802023-001BZ2024 May 19473 x 489 km, 94.2 min, 97°.4
09:39Flock 4Y-24550202023-001M2024 May 19478 x 488 km, 94.3 min, 97°.4
09:38Flock 4Y-25550272023-001U2024 May 19477 x 489 km, 94.3 min, 97°.4
09:40Flock 4Y-26550702023-001BP2024 May 19474 x 489 km, 94.2 min, 97°.4
09:41Flock 4Y-27550832023-001CC2024 May 19472 x 487 km, 94.2 min, 97°.4
09:40Flock 4Y-29550302023-001X2024 May 19471 x 482 km, 94.1 min, 97°.4
09:39Flock 4Y-3550352023-001AC2024 May 19474 x 489 km, 94.2 min, 97°.4
09:40Flock 4Y-30550252023-001S2024 May 19476 x 487 km, 94.2 min, 97°.4
09:39Flock 4Y-32550212023-001N2024 May 19476 x 487 km, 94.2 min, 97°.4
09:39Flock 4Y-33550422023-001AK2024 May 19477 x 489 km, 94.3 min, 97°.4
09:40Flock 4Y-34550822023-001CB2024 May 19475 x 491 km, 94.3 min, 97°.4
09:40Flock 4Y-35550572023-001BA2024 May 19476 x 488 km, 94.2 min, 97°.4
09:40Flock 4Y-36550782023-001BX2024 May 19474 x 489 km, 94.2 min, 97°.4
09:40Flock 4Y-4550552023-001AY2024 May 19475 x 489 km, 94.2 min, 97°.4
09:39Flock 4Y-5550282023-001V2024 May 19477 x 489 km, 94.3 min, 97°.4
09:41Flock 4Y-6550662023-001BK2024 May 19475 x 489 km, 94.2 min, 97°.4
09:39Flock 4Y-7550322023-001Z2024 May 19479 x 491 km, 94.3 min, 97°.4
09:40Flock 4Y-8550712023-001BQ2024 May 19471 x 486 km, 94.2 min, 97°.4
09:40Flock 4Y-9550692023-001BN2024 May 19476 x 491 km, 94.3 min, 97°.4
05:11GAzelle540232022-127A2024 May 19743 x 761 km, 99.9 min, 98°.3
10:22Geoeye 1333312008-042A2024 May 19675 x 683 km, 98.3 min, 98°.1
22:34GHOSt 1 (Global Hyperspectral Observation Satellite)561952023-054T2024 May 19470 x 480 km, 94.1 min, 97°.4
22:36GHOSt 2 (Global Hyperspectral Observation Satellite)561972023-054V2024 May 19465 x 475 km, 94.0 min, 97°.4
18:45GNOMES 1 (GNSS Navigation and Occultation Measurement Satellite)462662020-059B2024 May 19584 x 591 km, 96.4 min, 97°.9
10:46GNOMES 3 (GNSS Navigation and Occultation Measurement Satellite)521582022-033B2024 May 19626 x 640 km, 97.4 min, 97°.9
22:21Hawk 7A561912023-054P2024 May 19506 x 516 km, 94.8 min, 97°.4
22:16Hawk 7B561932023-054R2024 May 19506 x 516 km, 94.8 min, 97°.3
22:19Hawk 7C562002023-054Y2024 May 19506 x 515 km, 94.8 min, 97°.4
09:35ICEYE X21550492023-001AS2024 May 19483 x 504 km, 94.5 min, 97°.4
09:32ICEYE X27550622023-001BF2024 May 19498 x 510 km, 94.7 min, 97°.4
09:49ION SCV-001 (Lucas)462742020-061C2024 May 19474 x 481 km, 94.1 min, 97°.3
09:37ION SCV-004 (Elysian Eleonora)509932022-002K2024 May 19503 x 518 km, 94.8 min, 97°.4
09:43ION SCV-007 (Glorious Gratia)550602023-001BD2024 May 19635 x 652 km, 97.6 min, 98°.0
10:46ION SCV-008 (Fierce Franciscus)550512023-001AU2024 May 19521 x 537 km, 95.2 min, 97°.6
22:09ION SCV-010 (Masterful Matthaeus)561922023-054Q2024 May 19535 x 554 km, 95.5 min, 97°.5
17:24IRAS137771983-004A2024 May 19878 x 905 km, 102.8 min, 99°.0
18:14IRIS (Interface Region Imaging Spectrometer)391972013-033A2024 May 19606 x 641 km, 97.2 min, 98°.0
22:35Kepler 20562172023-054AR2024 May 19471 x 482 km, 94.1 min, 97°.4
22:32Kepler 21562182023-054AS2024 May 19473 x 481 km, 94.1 min, 97°.4
08:10USA 186 (KH- 11 Block-4 F1?/Crystal)288882005-042A2024 May 19379 x 442 km, 92.8 min, 97°.1
14:38USA 224 (KH- 11 Block-4 F2?/Crystal)373482011-002A2024 Apr 22262 x 1023 km, 97.6 min, 97°.9
09:40USA 245 (KH-11 Block-4 F3?/Crystal)392322013-043A2024 May 17266 x 1013 km, 97.5 min, 97°.9
13:00USA 314 (KH-11 Block-5 F-2/Crystal)482472021-032A2024 May 19548 x 769 km, 97.9 min, 98°.0
02:57Landsat 276151975-004A2024 May 19899 x 911 km, 103.1 min, 98°.9
02:48Landsat 3107021978-026A2024 May 19893 x 916 km, 103.1 min, 99°.0
10:11Landsat 8 (Landsat Data Continuity Mission)390842013-008A2024 May 19702 x 703 km, 98.8 min, 98°.2
10:11Landsat 9492602021-088A2024 May 19702 x 703 km, 98.8 min, 98°.2
10:54Lynk Tower 1521622022-033F2024 May 19457 x 469 km, 93.9 min, 97°.3
09:24Lynk Tower 3550462023-001AP2024 May 19505 x 519 km, 94.9 min, 97°.4
09:23Lynk Tower 4550342023-001AB2024 May 19506 x 519 km, 94.9 min, 97°.4
01:31MSX238511996-024A2024 May 19894 x 905 km, 103.0 min, 99°.0
22:31Nimbus 3 (Nimbus B2)38901969-037A2024 May 191070 x 1129 km, 107.3 min, 99°.8
00:02Nimbus 4 (Nimbus D)43621970-025A2024 May 191086 x 1098 km, 107.1 min, 100°.0
23:11Nimbus 5 (Nimbus E)63051972-097A2024 May 191088 x 1100 km, 107.1 min, 99°.9
23:30Nimbus 6 (Nimbus F)79241975-052A2024 May 191101 x 1112 km, 107.4 min, 100°.0
03:45NOAA 5 (ITOS H)90571976-077A2024 May 191509 x 1523 km, 116.3 min, 102°.2
06:56NOAA 6114161979-057A2024 May 19770 x 784 km, 100.4 min, 98°.6
09:28NOAA 7125531981-059A2024 May 19826 x 841 km, 101.6 min, 98°.9
04:36NOAA 10169691986-073A2024 May 19787 x 806 km, 100.8 min, 98°.6
04:58NOAA 12212631991-032A2024 May 19793 x 815 km, 101.0 min, 98°.6
07:22NOAA 15253381998-030A2024 May 19795 x 811 km, 100.9 min, 98°.6
02:13NOAA 17274532002-032A2024 May 19798 x 816 km, 101.0 min, 98°.8
10:40NOAA 18286542005-018A2024 May 19838 x 859 km, 101.9 min, 98°.9
01:25NOAA 20 (JPSS, Joint Polar Satellite System 1)430132017-073A2024 May 19826 x 827 km, 101.4 min, 98°.7
01:24NOAA 21 (Joint Polar Satellite System 2)542342022-150A2024 May 19826 x 827 km, 101.4 min, 98°.8
18:55North Star 1 (Lemur 2, Nimbus 2000)588992024-022A2024 May 19514 x 534 km, 95.1 min, 97°.5
18:55North Star 2 (Lemur 2, Valhalla)589002024-022B2024 May 19514 x 534 km, 95.1 min, 97°.5
18:55North Star 3 (Lemur 2, Oba Ni Jesu)589022024-022D2024 May 19512 x 528 km, 95.0 min, 97°.5
18:55North Star 4 (Lemur 2, Cael)589032024-022E2024 May 19514 x 530 km, 95.1 min, 97°.5
01:36OCO 2 (Orbiting Carbon Observatory)400592014-035A2024 May 19701 x 704 km, 98.8 min, 98°.2
10:02Orbcomm-X (Orbcomm-X)215761991-050C2024 May 19748 x 752 km, 99.8 min, 98°.4
00:38Perseus-M 1400392014-033AF2024 May 19590 x 606 km, 96.6 min, 97°.9
06:17QBScout 1394432013-066AD2024 May 19464 x 468 km, 93.9 min, 97°.4
06:03QuakeSat278452003-031F2024 May 19808 x 819 km, 101.2 min, 98°.7
21:20QuikScat257891999-034A2024 May 19654 x 794 km, 99.3 min, 98°.4
09:35Skysat 1394182013-066C2024 May 19534 x 570 km, 95.7 min, 97°.5
09:15Skysat 7 (Skysat C5)417722016-058C2024 May 19451 x 467 km, 93.8 min, 97°.2
14:00Skysat 8 (Skysat C6)429922017-068F2024 May 19473 x 475 km, 94.1 min, 97°.4
13:56Skysat 9 (Skysat C7)429912017-068E2024 May 19472 x 476 km, 94.1 min, 97°.4
13:54Skysat 10 (Skysat C8)429902017-068D2024 May 19475 x 481 km, 94.2 min, 97°.4
13:49Skysat 11 (Skysat C9)429892017-068C2024 May 19453 x 482 km, 94.0 min, 97°.4
13:56Skysat 12 (Skysat C10)429882017-068B2024 May 19468 x 476 km, 94.0 min, 97°.4
05:58SMAP (Soil Moisture Active Passive)403762015-003A2024 May 19681 x 683 km, 98.4 min, 98°.1
11:01Spark 1 (LEO 1)521572022-033A2024 May 19628 x 635 km, 97.3 min, 97°.9
13:50Starlink 3003488792021-059A2024 May 19562 x 564 km, 95.9 min, 97°.7
13:50Starlink 3004488802021-059B2024 May 19563 x 563 km, 95.9 min, 97°.7
13:49Starlink 3005488812021-059C2024 May 19562 x 564 km, 95.9 min, 97°.7
17:36Starlink 4362530432022-077A2024 May 19561 x 565 km, 95.9 min, 97°.7
09:36Starlink 4391531892022-084A2024 May 19563 x 563 km, 95.9 min, 97°.7
13:36Starlink 4415534652022-099A2024 May 19562 x 564 km, 95.9 min, 97°.7
21:36Starlink 4622536482022-105A2024 May 19562 x 564 km, 95.9 min, 97°.7
05:36Starlink 6038563172023-058A2024 May 19562 x 564 km, 95.9 min, 97°.7
09:29STPSat-5437622018-099E2024 May 19554 x 561 km, 95.8 min, 97°.5
12:06USA 205 (STSS-ATRR)349032009-023A2023 Sep 11864 x 877 km, 102.4 min, 98°.9
01:25Suomi NPP (Suomi National Polar-orbiting Partnership)378492011-061A2024 May 19826 x 828 km, 101.4 min, 98°.7
09:48Terra (EOS AM-1)259941999-068A2024 May 19692 x 696 km, 98.6 min, 98°.0
13:12TIROS 1014301965-051A2024 May 19716 x 795 km, 99.9 min, 98°.4
22:39Tomorrow R1561992023-054X2024 May 19456 x 464 km, 93.8 min, 97°.4
23:41TOPO 143631970-025B2024 May 191083 x 1087 km, 106.9 min, 99°.9
09:51Umbra 02509862022-002C2024 May 19489 x 495 km, 94.5 min, 97°.4
22:08Umbra 06561982023-054W2024 May 19492 x 498 km, 94.5 min, 97°.4
13:28Vigoride 3527602022-057AE2024 May 19506 x 519 km, 94.9 min, 97°.6
09:24Vigoride 5550562023-001AZ2024 May 19503 x 516 km, 94.8 min, 97°.4
06:00Weather System Follow-on - Microwave 1 (WSF-M 1)594812024-070A2024 May 19820 x 827 km, 101.4 min, 98°.7
13:30WorldView 1320602007-041A2024 May 19490 x 494 km, 94.5 min, 97°.4
10:24WorldView 2359462009-055A2024 May 19767 x 772 km, 100.2 min, 98°.4
10:25Worldview 3401152014-048A2024 May 19610 x 614 km, 96.9 min, 97°.8
10:15Worldview Legion 1596252024-081A2024 May 19514 x 521 km, 95.0 min, 97°.6
10:15Worldview Legion 2596262024-081B2024 May 19514 x 519 km, 95.0 min, 97°.6
09:16XR-1475072021-006CY2024 May 19475 x 490 km, 94.3 min, 97°.3

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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