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 Oct 31 18:57 | 2025 Oct 29 12:13:12 | 102.0875 | 0.00731 | 8.3072 | 11.4149 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 30 18:57 | 2025 Oct 29 12:13:12 | 102.0875 | 0.00731 | 8.3072 | 11.4149 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 29 18:57 | 2025 Oct 29 12:13:12 | 102.0875 | 0.00731 | 8.3072 | 11.4149 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 28 18:57 | 2025 Oct 23 10:50:33 | 102.0889 | 0.00732 | 7.8834 | 23.2537 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 27 18:57 | 2025 Oct 23 10:50:33 | 102.0889 | 0.00732 | 7.8834 | 23.2537 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 26 18:57 | 2025 Oct 23 10:50:33 | 102.0889 | 0.00732 | 7.8834 | 23.2537 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 25 17:57 | 2025 Oct 23 10:50:33 | 102.0889 | 0.00732 | 7.8834 | 23.2537 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 24 17:57 | 2025 Oct 23 10:50:33 | 102.0889 | 0.00732 | 7.8834 | 23.2537 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 22 17:56 | 2025 Oct 18 06:18:59 | 102.0881 | 0.00732 | 7.5204 | 33.3971 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 21 17:56 | 2025 Oct 18 06:18:59 | 102.0881 | 0.00732 | 7.5204 | 33.3971 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 20 17:56 | 2025 Oct 18 06:18:59 | 102.0881 | 0.00732 | 7.5204 | 33.3971 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 19 17:56 | 2025 Oct 18 06:18:59 | 102.0881 | 0.00732 | 7.5204 | 33.3971 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 18 17:56 | 2025 Oct 18 06:18:59 | 102.0881 | 0.00732 | 7.5204 | 33.3971 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 17 17:56 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 16 17:56 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 15 17:56 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 14 17:56 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 12 17:56 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 11 17:57 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 09 17:56 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 08 17:56 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 07 17:56 | 2025 Oct 07 11:01:32 | 102.0890 | 0.00732 | 6.7645 | 54.5204 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 05 17:56 | 2025 Sep 26 03:06:53 | 102.0893 | 0.00732 | 5.9718 | 76.6327 | 2.9954 | 12.69886 | 9.243 |
| 2025 Oct 04 17:57 | 2025 Sep 26 03:06:53 | 102.0893 | 0.00732 | 5.9718 | 76.6327 | 2.9954 | 12.69886 | 9.243 |