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 Sep 03 17:57 | 2025 Sep 03 06:48:41 | 98.7945 | 0.00328 | 16.9860 | 39.8378 | 320.5209 | 14.39250 | 5.743 |
| 2025 Sep 02 17:56 | 2025 Sep 02 00:46:44 | 98.7944 | 0.00329 | 16.9005 | 43.4809 | 320.5209 | 14.39250 | 5.743 |
| 2025 Sep 01 17:56 | 2025 Sep 01 06:25:31 | 98.7944 | 0.00329 | 16.8482 | 45.7068 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 31 17:56 | 2025 Aug 31 07:03:59 | 98.7942 | 0.00330 | 16.7816 | 48.5041 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 30 17:56 | 2025 Aug 30 01:02:01 | 98.7941 | 0.00330 | 16.6961 | 52.1389 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 29 17:56 | 2025 Aug 29 06:40:49 | 98.7941 | 0.00330 | 16.6438 | 54.3561 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 28 17:57 | 2025 Aug 27 21:18:37 | 98.7941 | 0.00331 | 16.5487 | 58.3550 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 27 17:56 | 2025 Aug 27 06:17:38 | 98.7941 | 0.00331 | 16.5060 | 60.1548 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 26 17:56 | 2025 Aug 25 22:35:32 | 98.7940 | 0.00332 | 16.4156 | 63.9461 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 25 17:56 | 2025 Aug 24 23:14:00 | 98.7940 | 0.00332 | 16.3491 | 66.7501 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 24 17:56 | 2025 Aug 23 22:12:21 | 98.7941 | 0.00332 | 16.2778 | 69.7505 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 23 17:56 | 2025 Aug 20 22:27:37 | 98.7940 | 0.00333 | 16.0734 | 78.2917 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 22 17:56 | 2025 Aug 20 22:27:37 | 98.7940 | 0.00333 | 16.0734 | 78.2917 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 20 17:56 | 2025 Aug 20 07:26:37 | 98.7941 | 0.00333 | 16.0306 | 80.0630 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 19 17:56 | 2025 Aug 19 01:24:38 | 98.7939 | 0.00333 | 15.9451 | 83.6271 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 18 17:56 | 2025 Aug 17 22:42:52 | 98.7938 | 0.00333 | 15.8690 | 86.8195 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 16 17:56 | 2025 Aug 15 22:19:40 | 98.7937 | 0.00333 | 15.7312 | 92.5788 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 15 17:57 | 2025 Aug 14 12:57:27 | 98.7935 | 0.00333 | 15.6361 | 96.5608 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 14 17:56 | 2025 Aug 13 21:56:27 | 98.7935 | 0.00333 | 15.5934 | 98.3613 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 13 17:58 | 2025 Aug 12 17:34:34 | 98.7935 | 0.00333 | 15.5126 | 101.7589 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 12 17:56 | 2025 Aug 11 23:13:21 | 98.7934 | 0.00333 | 15.4603 | 103.9532 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 11 17:56 | 2025 Aug 11 13:12:41 | 98.7934 | 0.00333 | 15.4318 | 105.1272 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 10 17:57 | 2025 Aug 10 12:11:01 | 98.7934 | 0.00332 | 15.3605 | 108.0940 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 09 17:56 | 2025 Aug 09 01:08:41 | 98.7933 | 0.00332 | 15.2607 | 112.2762 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 08 17:56 | 2025 Aug 08 00:07:02 | 98.7932 | 0.00332 | 15.1894 | 115.2505 | 320.5209 | 14.39250 | 5.743 |
| 2025 Aug 07 17:56 | 2025 Aug 06 21:25:15 | 98.7932 | 0.00331 | 15.1133 | 118.4335 | 320.5209 | 14.39250 | 5.743 |