Orbital elements of ESIAFI 1
| Launched | 20 February 1981 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 12309 |
| Alternative names |
COMSTAR 4 |
| 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 |
| 2026 Aug 10 17:56 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 272.4741 | 1.00277 | – |
| 2026 Aug 09 17:57 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 272.4741 | 1.00277 | – |
| 2026 Aug 08 17:57 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 272.4741 | 1.00277 | – |
| 2026 Aug 07 17:57 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 272.4741 | 1.00277 | – |
| 2026 Aug 06 17:57 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 272.4741 | 1.00277 | – |
| 2026 Aug 05 17:56 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 272.4741 | 1.00277 | – |
| 2026 Aug 04 17:57 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 272.4741 | 1.00277 | – |
| 2026 Aug 03 17:56 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 272.4741 | 1.00277 | – |
| 2026 Aug 02 17:57 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 272.4741 | 1.00277 | – |
| 2026 Aug 01 17:57 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 272.4741 | 1.00277 | – |
| 2026 Jul 31 17:56 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 272.4741 | 1.00277 | – |
| 2026 Jul 30 17:57 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 272.4741 | 1.00277 | – |
| 2026 Jul 29 17:57 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 272.4741 | 1.00277 | – |
| 2026 Jul 28 17:57 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 272.4741 | 1.00277 | – |
| 2026 Jul 27 17:57 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 272.4741 | 1.00277 | – |
| 2026 Jul 26 17:56 | 2026 Jul 20 20:11:36 | 8.6368 | 0.00029 | 20.7345 | 89.7946 | 272.4741 | 1.00277 | – |
| 2026 Jul 25 17:57 | 2026 Jul 20 20:11:36 | 8.6368 | 0.00029 | 20.7345 | 89.7946 | 272.4741 | 1.00277 | – |
| 2026 Jul 24 17:56 | 2026 Jul 20 20:11:36 | 8.6368 | 0.00029 | 20.7345 | 89.7946 | 272.4741 | 1.00277 | – |
| 2026 Jul 23 17:57 | 2026 Jul 20 20:11:36 | 8.6368 | 0.00029 | 20.7345 | 89.7946 | 272.4741 | 1.00277 | – |
| 2026 Jul 22 17:57 | 2026 Jul 20 20:11:36 | 8.6368 | 0.00029 | 20.7345 | 89.7946 | 272.4741 | 1.00277 | – |
| 2026 Jul 21 17:57 | 2026 Jul 20 20:11:36 | 8.6368 | 0.00029 | 20.7345 | 89.7946 | 272.4741 | 1.00277 | – |
| 2026 Jul 20 17:57 | 2026 Jul 15 20:31:46 | 8.6467 | 0.00028 | 20.7366 | 85.0403 | 272.4741 | 1.00277 | – |
| 2026 Jul 19 19:06 | 2026 Jul 15 20:31:46 | 8.6467 | 0.00028 | 20.7366 | 85.0403 | 272.4741 | 1.00277 | – |
| 2026 Jul 19 17:57 | 2026 Jul 15 20:31:46 | 8.6467 | 0.00028 | 20.7366 | 85.0403 | 272.4741 | 1.00277 | – |
| 2026 Jul 18 17:57 | 2026 Jul 15 20:31:46 | 8.6467 | 0.00028 | 20.7366 | 85.0403 | 272.4741 | 1.00277 | – |
| 2026 Jul 17 17:57 | 2026 Jul 15 20:31:46 | 8.6467 | 0.00028 | 20.7366 | 85.0403 | 272.4741 | 1.00277 | – |
| 2026 Jul 16 17:56 | 2026 Jul 15 20:31:46 | 8.6467 | 0.00028 | 20.7366 | 85.0403 | 272.4741 | 1.00277 | – |
| 2026 Jul 15 17:57 | 2026 Jul 10 20:51:39 | 8.6571 | 0.00027 | 20.7384 | 86.7099 | 272.4741 | 1.00277 | – |
| 2026 Jul 14 17:56 | 2026 Jul 10 20:51:39 | 8.6571 | 0.00027 | 20.7384 | 86.7099 | 272.4741 | 1.00277 | – |