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 24 17:57 | 2026 Aug 18 18:14:26 | 8.5835 | 0.00022 | 20.7222 | 90.1518 | 269.9303 | 1.00279 | – |
| 2026 Aug 23 17:56 | 2026 Aug 18 18:14:26 | 8.5835 | 0.00022 | 20.7222 | 90.1518 | 269.9303 | 1.00279 | – |
| 2026 Aug 22 17:56 | 2026 Aug 18 18:14:26 | 8.5835 | 0.00022 | 20.7222 | 90.1518 | 269.9303 | 1.00279 | – |
| 2026 Aug 21 17:56 | 2026 Aug 18 18:14:26 | 8.5835 | 0.00022 | 20.7222 | 90.1518 | 269.9303 | 1.00279 | – |
| 2026 Aug 20 17:57 | 2026 Aug 18 18:14:26 | 8.5835 | 0.00022 | 20.7222 | 90.1518 | 269.9303 | 1.00279 | – |
| 2026 Aug 19 17:57 | 2026 Aug 18 18:14:26 | 8.5835 | 0.00022 | 20.7222 | 90.1518 | 269.9303 | 1.00279 | – |
| 2026 Aug 18 17:56 | 2026 Aug 11 18:42:59 | 8.5969 | 0.00020 | 20.7251 | 82.8691 | 269.9303 | 1.00279 | – |
| 2026 Aug 17 17:56 | 2026 Aug 11 18:42:59 | 8.5969 | 0.00020 | 20.7251 | 82.8691 | 269.9303 | 1.00279 | – |
| 2026 Aug 16 17:56 | 2026 Aug 11 18:42:59 | 8.5969 | 0.00020 | 20.7251 | 82.8691 | 269.9303 | 1.00279 | – |
| 2026 Aug 15 17:57 | 2026 Aug 11 18:42:59 | 8.5969 | 0.00020 | 20.7251 | 82.8691 | 269.9303 | 1.00279 | – |
| 2026 Aug 14 17:56 | 2026 Aug 11 18:42:59 | 8.5969 | 0.00020 | 20.7251 | 82.8691 | 269.9303 | 1.00279 | – |
| 2026 Aug 13 17:57 | 2026 Aug 11 18:42:59 | 8.5969 | 0.00020 | 20.7251 | 82.8691 | 269.9303 | 1.00279 | – |
| 2026 Aug 12 17:56 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 269.9303 | 1.00279 | – |
| 2026 Aug 11 17:56 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 269.9303 | 1.00279 | – |
| 2026 Aug 10 17:56 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 269.9303 | 1.00279 | – |
| 2026 Aug 09 17:57 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 269.9303 | 1.00279 | – |
| 2026 Aug 08 17:57 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 269.9303 | 1.00279 | – |
| 2026 Aug 07 17:57 | 2026 Aug 05 19:07:07 | 8.6089 | 0.00021 | 20.7273 | 87.6529 | 269.9303 | 1.00279 | – |
| 2026 Aug 06 17:57 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 269.9303 | 1.00279 | – |
| 2026 Aug 05 17:56 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 269.9303 | 1.00279 | – |
| 2026 Aug 04 17:57 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 269.9303 | 1.00279 | – |
| 2026 Aug 03 17:56 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 269.9303 | 1.00279 | – |
| 2026 Aug 02 17:57 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 269.9303 | 1.00279 | – |
| 2026 Aug 01 17:57 | 2026 Jul 31 19:27:23 | 8.6181 | 0.00025 | 20.7293 | 96.5109 | 269.9303 | 1.00279 | – |
| 2026 Jul 31 17:56 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 269.9303 | 1.00279 | – |
| 2026 Jul 30 17:57 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 269.9303 | 1.00279 | – |
| 2026 Jul 29 17:57 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 269.9303 | 1.00279 | – |
| 2026 Jul 28 17:57 | 2026 Jul 26 19:47:37 | 8.6266 | 0.00027 | 20.7316 | 96.5312 | 269.9303 | 1.00279 | – |