Orbital elements of ERS-1
| Launched | 16 July 1991 |
| Flight ended | – |
| Launch site | Europe's Spaceport, Kourou, French Guiana |
| Owner | European Space Agency |
| NORAD ID | 21574 |
| Date fetched |
Epoch osculation |
Inc. [°] |
Ecc. | RA asc node [hr] |
Arg Peri. [°] |
Mean anom [°] |
Mean motion [rev/day] |
Abs. mag |
| Date fetched |
Epoch osculation |
Inc. [°] |
Ecc. | RA asc node [hr] |
Arg Peri. [°] |
Mean anom [°] |
Mean motion [rev/day] |
Abs. mag |
| 2025 May 18 17:57 | 2025 May 18 05:54:33 | 98.7920 | 0.00321 | 9.6009 | 0.8744 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 17 17:57 | 2025 May 16 23:52:30 | 98.7921 | 0.00322 | 9.5154 | 4.5672 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 16 17:56 | 2025 May 15 14:30:13 | 98.7921 | 0.00323 | 9.4203 | 8.6776 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 15 17:57 | 2025 May 14 13:28:31 | 98.7922 | 0.00323 | 9.3491 | 11.7539 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 14 17:56 | 2025 May 13 20:47:22 | 98.7922 | 0.00324 | 9.3015 | 13.7936 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 13 17:56 | 2025 May 13 05:46:20 | 98.7922 | 0.00324 | 9.2588 | 15.6396 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 12 17:56 | 2025 May 11 20:24:03 | 98.7922 | 0.00325 | 9.1637 | 19.7136 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 11 17:56 | 2025 May 10 22:42:34 | 98.7922 | 0.00325 | 9.1020 | 22.3556 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 10 17:56 | 2025 May 09 15:00:24 | 98.7923 | 0.00327 | 9.0117 | 26.1864 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 09 17:57 | 2025 May 09 11:40:10 | 98.7923 | 0.00327 | 9.0022 | 26.5969 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 08 17:56 | 2025 May 08 00:37:46 | 98.7924 | 0.00327 | 8.9024 | 30.8438 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 07 17:56 | 2025 May 06 23:36:03 | 98.7924 | 0.00328 | 8.8311 | 33.8800 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 06 17:57 | 2025 May 05 22:34:19 | 98.7925 | 0.00328 | 8.7598 | 36.9107 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 05 17:56 | 2025 May 04 19:52:29 | 98.7927 | 0.00329 | 8.6838 | 40.1135 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 04 17:57 | 2025 May 04 11:31:55 | 98.7927 | 0.00329 | 8.6600 | 41.1194 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 03 17:57 | 2025 May 03 00:29:30 | 98.7928 | 0.00330 | 8.5602 | 45.3457 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 02 17:57 | 2025 May 01 23:27:46 | 98.7928 | 0.00330 | 8.4889 | 48.3621 | 359.2493 | 14.39180 | 5.743 |
| 2025 May 01 17:56 | 2025 Apr 28 22:02:42 | 98.7933 | 0.00332 | 8.2798 | 57.1762 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 30 17:56 | 2025 Apr 28 22:02:42 | 98.7933 | 0.00332 | 8.2798 | 57.1762 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 29 17:57 | 2025 Apr 28 22:02:42 | 98.7933 | 0.00332 | 8.2798 | 57.1762 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 27 17:56 | 2025 Apr 26 21:39:21 | 98.7933 | 0.00332 | 8.1420 | 62.9261 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 26 17:57 | 2025 Apr 26 13:18:46 | 98.7934 | 0.00332 | 8.1183 | 63.9451 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 25 17:56 | 2025 Apr 24 12:55:25 | 98.7934 | 0.00333 | 7.9804 | 69.7003 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 24 17:56 | 2025 Apr 23 21:54:22 | 98.7934 | 0.00333 | 7.9377 | 71.4940 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 23 17:57 | 2025 Apr 22 22:32:45 | 98.7934 | 0.00333 | 7.8711 | 74.2976 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 22 17:56 | 2025 Apr 21 23:11:07 | 98.7935 | 0.00333 | 7.8046 | 77.1275 | 359.2493 | 14.39180 | 5.743 |
| 2025 Apr 21 17:57 | 2025 Apr 20 22:09:22 | 98.7935 | 0.00333 | 7.7333 | 80.0792 | 359.2493 | 14.39180 | 5.743 |