Orbital Focus - International Spaceflight Facts and Figures
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Orbits


Tyneside, UK
2023 Jun 4
Sunday, Day 155

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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 Jun 4, 05:48 UTC

LTDN Satellite Cat
no
Desig- nation Orbit
Epoch
Orbit
00:09ESSA 220911966-016A2023 Jun 31354 x 1414 km, 113.4 min, 101°.3
01:26NOAA 20 (JPSS, Joint Polar Satellite System 1)430132017-073A2023 Jun 3826 x 828 km, 101.4 min, 98°.8
01:59NOAA 17274532002-032A2023 Jun 3799 x 816 km, 101.0 min, 98°.7
02:05Fengyun 3D430102017-072A2023 Jun 3827 x 829 km, 101.5 min, 98°.9
02:14ESSA 836151968-114A2023 Jun 31414 x 1463 km, 114.6 min, 101°.5
02:49AMS 4 (DMSP 5D-1 F-4)113891979-050A2023 Jun 3788 x 806 km, 100.8 min, 98°.5
03:07Meteor M2-2443872019-038A2023 Jun 3812 x 814 km, 101.1 min, 98°.8
03:11Meteor M-1358652009-049A2023 Jun 3816 x 818 km, 101.2 min, 98°.6
03:31NOAA 5 (ITOS H)90571976-077A2023 Jun 31509 x 1523 km, 116.3 min, 102°.2
03:57USA 210 (DMSP 5D-3 F-18)359512009-057A2023 Jun 3838 x 855 km, 101.9 min, 98°.8
04:32NOAA 10169691986-073A2023 Jun 3788 x 806 km, 100.8 min, 98°.6
04:41Fengyun 1B207881990-081A2023 Jun 3872 x 895 km, 102.6 min, 98°.8
05:10NOAA 8139231983-022A2023 Jun 3785 x 805 km, 100.8 min, 98°.7
05:12NOAA 12212631991-032A2023 Jun 3794 x 815 km, 101.0 min, 98°.5
05:37Fengyun 3E490082021-062A2023 Jun 3825 x 828 km, 101.4 min, 98°.7
05:47USA 249 (DMSP 5D-3 F-19)396302014-015A2023 Jun 3837 x 853 km, 101.8 min, 98°.7
06:02USA 109 (DMSP 5D-2 F-13)235331995-015A2023 Jun 3832 x 844 km, 101.7 min, 98°.8
06:24USA 191 (DMSP 5D-3 F-17)295222006-050A2023 Jun 3838 x 852 km, 101.8 min, 98°.8
06:36NOAA 6114161979-057A2023 Jun 3772 x 785 km, 100.4 min, 98°.7
07:28NOAA 15253381998-030A2023 Jun 3797 x 811 km, 101.0 min, 98°.6
07:30USA 73 (DMSP 5D-2 F-11)217981991-082A2023 Jun 3827 x 845 km, 101.6 min, 98°.8
08:13USA 131 (DMSP 5D-2 F-14)247531997-012A2023 Jun 3832 x 845 km, 101.7 min, 98°.9
08:45TIROS-N110601978-096A2023 Jun 3823 x 837 km, 101.5 min, 98°.6
09:06USA 106 (DMSP 5D-2 S-12)232331994-057A2023 Jun 3832 x 847 km, 101.7 min, 98°.8
09:28NOAA 1 (ITOS A)47931970-106A2023 Jun 31423 x 1472 km, 114.8 min, 101°.5
09:29MetOp-B387712012-049A2023 Jun 3819 x 821 km, 101.3 min, 98°.7
09:30MetOp-C436892018-087A2023 Jun 3817 x 823 km, 101.3 min, 98°.7
10:29NOAA 18286542005-018A2023 Jun 3838 x 860 km, 101.9 min, 98°.9
13:13TIROS 1014301965-051A2023 Jun 3716 x 797 km, 100.0 min, 98°.4
17:30DMSP 5B F-3 (Defense Meteorological Satellite Program)62751972-089A2023 Jun 3772 x 822 km, 100.8 min, 98°.5
17:54DMSP 5D-2 F-6 (Defense Meteorological Satellite Program)137361982-118A2023 Jun 3788 x 798 km, 100.7 min, 98°.6
17:56USA 26 (DMSP 5D-2 F-8)181231987-053A2023 Jun 3819 x 839 km, 101.5 min, 98°.7
18:34AMS 3 (DMSP 5D-1 F-3)108201978-042A2023 Jun 3764 x 779 km, 100.3 min, 98°.5
19:11DMSP 5C F-2 (Defense Meteorological Satellite Program)78161975-043A2023 Jun 3773 x 850 km, 101.1 min, 98°.7
19:14DMSP 5C F-1 (Defense Meteorological Satellite Program)74111974-063A2023 Jun 3767 x 827 km, 100.8 min, 98°.6
19:49DMSP 5A F-1 (Defense Meteorological Satellite Program)32661968-042A2023 Jun 3803 x 878 km, 101.7 min, 98°.6
20:38DMSP 4A F-9 (Defense Meteorological Satellite Program)29201967-080A2023 Jun 3816 x 870 km, 101.8 min, 98°.7
20:39DMSP 5A F-3 (Defense Meteorological Satellite Program)40471969-062A2023 Jun 3764 x 826 km, 100.8 min, 98°.6
22:50Nimbus 3 (Nimbus B2)38901969-037A2023 Jun 31070 x 1129 km, 107.3 min, 99°.8
23:18Nimbus 5 (Nimbus E)63051972-097A2023 Jun 31088 x 1100 km, 107.1 min, 99°.9
23:23Nimbus 6 (Nimbus F)79241975-052A2023 Jun 31100 x 1113 km, 107.4 min, 100°.0
23:57Nimbus 4 (Nimbus D)43621970-025A2023 Jun 31086 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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