Orbital elements of ESSA 4
| Launched | 25 January 1967 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 2657 |
| Alternative names |
TOS-B |
| 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 12 17:57 | 2025 Sep 03 07:03:53 | 102.0889 | 0.00732 | 4.3742 | 121.2379 | 52.2658 | 12.69885 | 9.243 |
| 2025 Sep 11 17:57 | 2025 Sep 03 07:03:53 | 102.0889 | 0.00732 | 4.3742 | 121.2379 | 52.2658 | 12.69885 | 9.243 |
| 2025 Sep 10 17:56 | 2025 Sep 03 07:03:53 | 102.0889 | 0.00732 | 4.3742 | 121.2379 | 52.2658 | 12.69885 | 9.243 |
| 2025 Sep 08 17:57 | 2025 Sep 03 07:03:53 | 102.0889 | 0.00732 | 4.3742 | 121.2379 | 52.2658 | 12.69885 | 9.243 |
| 2025 Sep 07 17:56 | 2025 Sep 03 07:03:53 | 102.0889 | 0.00732 | 4.3742 | 121.2379 | 52.2658 | 12.69885 | 9.243 |
| 2025 Sep 06 20:41 | 2025 Sep 03 07:03:53 | 102.0889 | 0.00732 | 4.3742 | 121.2379 | 52.2658 | 12.69885 | 9.243 |
| 2025 Sep 03 17:57 | 2025 Sep 03 07:03:53 | 102.0889 | 0.00732 | 4.3742 | 121.2379 | 52.2658 | 12.69885 | 9.243 |
| 2025 Sep 02 17:56 | 2025 Aug 27 19:10:52 | 102.0888 | 0.00732 | 3.9198 | 133.9236 | 52.2658 | 12.69885 | 9.243 |
| 2025 Sep 01 17:56 | 2025 Aug 27 19:10:52 | 102.0888 | 0.00732 | 3.9198 | 133.9236 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 31 17:56 | 2025 Aug 27 19:10:52 | 102.0888 | 0.00732 | 3.9198 | 133.9236 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 30 17:56 | 2025 Aug 27 19:10:52 | 102.0888 | 0.00732 | 3.9198 | 133.9236 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 29 17:56 | 2025 Aug 27 19:10:52 | 102.0888 | 0.00732 | 3.9198 | 133.9236 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 28 17:57 | 2025 Aug 27 19:10:52 | 102.0888 | 0.00732 | 3.9198 | 133.9236 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 27 17:56 | 2025 Aug 20 11:34:25 | 102.0882 | 0.00731 | 3.4079 | 148.2219 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 26 17:56 | 2025 Aug 20 11:34:25 | 102.0882 | 0.00731 | 3.4079 | 148.2219 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 25 17:56 | 2025 Aug 20 11:34:25 | 102.0882 | 0.00731 | 3.4079 | 148.2219 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 24 17:56 | 2025 Aug 20 11:34:25 | 102.0882 | 0.00731 | 3.4079 | 148.2219 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 23 17:56 | 2025 Aug 20 11:34:25 | 102.0882 | 0.00731 | 3.4079 | 148.2219 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 22 17:56 | 2025 Aug 18 12:22:10 | 102.0881 | 0.00731 | 3.2704 | 152.0654 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 20 17:56 | 2025 Aug 18 12:22:10 | 102.0881 | 0.00731 | 3.2704 | 152.0654 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 19 17:56 | 2025 Aug 18 12:22:10 | 102.0881 | 0.00731 | 3.2704 | 152.0654 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 18 17:56 | 2025 Aug 18 12:22:10 | 102.0881 | 0.00731 | 3.2704 | 152.0654 | 52.2658 | 12.69885 | 9.243 |
| 2025 Aug 16 17:56 | 2025 Aug 11 23:52:16 | 102.0877 | 0.00731 | 2.8142 | 164.8213 | 52.2658 | 12.69885 | 9.243 |