Orbital Focus - International Spaceflight Facts and Figures
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Orbits


Tyneside, UK
2023 Jan 29
Sunday, Day 29

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Primary source of unclassified orbital elements

Orbital elements based on amateur observations
Sun-synchronous Satellites - Meteorology by LTDN

This a list of satellites in sun-synchronous orbit shown in the order they lie around the Earth. 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.

Cubesats less than 6U in size are excluded from the list because the vast majority reached space by hitch hiking and their final orbit was not important. Listing them would create an unnecessarily long page.

The menu on the left leads to some, hopefully useful, sub-lists of the satellites on this page.

Updated: 2023 Jan 28, 06:48 UTC

LTDN Satellite Cat
no
Desig- nation Orbit
Epoch
Orbit
00:14ESSA 220911966-016A2023 Jan 271355 x 1414 km, 113.4 min, 101°.2
01:25NOAA 20 (JPSS, Joint Polar Satellite System 1)430132017-073A2023 Jan 27826 x 828 km, 101.4 min, 98°.7
01:55NOAA 17274532002-032A2023 Jan 27800 x 816 km, 101.0 min, 98°.7
01:59Fengyun 3D430102017-072A2023 Jan 27827 x 830 km, 101.5 min, 98°.8
02:18ESSA 836151968-114A2023 Jan 271414 x 1463 km, 114.6 min, 101°.5
02:57AMS 4 (DMSP 5D-1 F-4)113891979-050A2023 Jan 27789 x 807 km, 100.8 min, 98°.5
03:01Meteor M2-2443872019-038A2023 Jan 27812 x 814 km, 101.1 min, 98°.8
03:18Meteor M-1358652009-049A2023 Jan 27816 x 818 km, 101.2 min, 98°.6
03:27NOAA 5 (ITOS H)90571976-077A2023 Jan 281508 x 1524 km, 116.3 min, 102°.1
04:00USA 210 (DMSP 5D-3 F-18)359512009-057A2023 Jan 27839 x 855 km, 101.9 min, 98°.8
04:33NOAA 10169691986-073A2023 Jan 27788 x 807 km, 100.8 min, 98°.6
04:48Fengyun 1B207881990-081A2023 Jan 27872 x 896 km, 102.7 min, 98°.8
05:03NOAA 8139231983-022A2023 Jan 27785 x 805 km, 100.8 min, 98°.7
05:18NOAA 12212631991-032A2023 Jan 27795 x 815 km, 101.0 min, 98°.5
05:37Fengyun 3E490082021-062A2023 Jan 27824 x 828 km, 101.4 min, 98°.7
05:50USA 249 (DMSP 5D-3 F-19)396302014-015A2023 Jan 27837 x 853 km, 101.8 min, 98°.7
05:59USA 109 (DMSP 5D-2 F-13)235331995-015A2023 Jan 27833 x 844 km, 101.7 min, 98°.8
06:27USA 191 (DMSP 5D-3 F-17)295222006-050A2023 Jan 27838 x 852 km, 101.8 min, 98°.8
06:28NOAA 6114161979-057A2023 Jan 27772 x 786 km, 100.4 min, 98°.7
07:27USA 73 (DMSP 5D-2 F-11)217981991-082A2023 Jan 27827 x 845 km, 101.6 min, 98°.8
07:29NOAA 15253381998-030A2023 Jan 27797 x 812 km, 101.0 min, 98°.6
08:53TIROS-N110601978-096A2023 Jan 27823 x 838 km, 101.5 min, 98°.6
09:02USA 106 (DMSP 5D-2 S-12)232331994-057A2023 Jan 27832 x 847 km, 101.7 min, 98°.9
09:30MetOp-B387712012-049A2023 Jan 27819 x 821 km, 101.3 min, 98°.7
09:30MetOp-C436892018-087A2023 Jan 28817 x 823 km, 101.3 min, 98°.7
09:35NOAA 1 (ITOS A)47931970-106A2023 Jan 271423 x 1472 km, 114.8 min, 101°.5
10:24NOAA 18286542005-018A2023 Jan 28839 x 860 km, 101.9 min, 98°.9
13:16TIROS 1014301965-051A2023 Jan 27717 x 797 km, 100.0 min, 98°.4
17:54DMSP 5D-2 F-6 (Defense Meteorological Satellite Program)137361982-118A2023 Jan 27788 x 799 km, 100.7 min, 98°.6
17:57USA 26 (DMSP 5D-2 F-8)181231987-053A2023 Jan 27819 x 839 km, 101.5 min, 98°.7
18:34AMS 3 (DMSP 5D-1 F-3)108201978-042A2023 Jan 27765 x 780 km, 100.3 min, 98°.5
19:08DMSP 5C F-2 (Defense Meteorological Satellite Program)78161975-043A2023 Jan 27774 x 850 km, 101.1 min, 98°.7
19:14DMSP 5C F-1 (Defense Meteorological Satellite Program)74111974-063A2023 Jan 27767 x 828 km, 100.8 min, 98°.6
19:57DMSP 5A F-1 (Defense Meteorological Satellite Program)32661968-042A2023 Jan 27804 x 878 km, 101.7 min, 98°.7
20:40DMSP 5A F-3 (Defense Meteorological Satellite Program)40471969-062A2023 Jan 27765 x 827 km, 100.8 min, 98°.6
20:41DMSP 4A F-9 (Defense Meteorological Satellite Program)29201967-080A2023 Jan 27816 x 870 km, 101.8 min, 98°.8
22:55Nimbus 3 (Nimbus B2)38901969-037A2023 Jan 271070 x 1130 km, 107.3 min, 99°.8
23:19Nimbus 5 (Nimbus E)63051972-097A2023 Jan 271088 x 1100 km, 107.1 min, 99°.9
23:20Nimbus 6 (Nimbus F)79241975-052A2023 Jan 271101 x 1112 km, 107.4 min, 100°.1
23:55Nimbus 4 (Nimbus D)43621970-025A2023 Jan 271086 x 1098 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 their observing, and particularly to Mike McCants for archiving the derived orbits.

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