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 |
| 2025 Sep 15 17:56 | 2025 Sep 14 16:01:01 | 9.2351 | 0.00008 | 20.8668 | 103.4881 | 256.5117 | 1.00262 | – |
| 2025 Sep 12 17:57 | 2025 Sep 02 16:47:08 | 9.2585 | 0.00018 | 20.8718 | 122.7774 | 256.5117 | 1.00262 | – |
| 2025 Sep 11 17:57 | 2025 Sep 02 16:47:08 | 9.2585 | 0.00018 | 20.8718 | 122.7774 | 256.5117 | 1.00262 | – |
| 2025 Sep 10 17:56 | 2025 Sep 02 16:47:08 | 9.2585 | 0.00018 | 20.8718 | 122.7774 | 256.5117 | 1.00262 | – |
| 2025 Sep 08 17:57 | 2025 Sep 02 16:47:08 | 9.2585 | 0.00018 | 20.8718 | 122.7774 | 256.5117 | 1.00262 | – |
| 2025 Sep 07 17:56 | 2025 Sep 02 16:47:08 | 9.2585 | 0.00018 | 20.8718 | 122.7774 | 256.5117 | 1.00262 | – |
| 2025 Sep 06 20:41 | 2025 Sep 02 16:47:08 | 9.2585 | 0.00018 | 20.8718 | 122.7774 | 256.5117 | 1.00262 | – |
| 2025 Sep 03 17:57 | 2025 Sep 02 16:47:08 | 9.2585 | 0.00018 | 20.8718 | 122.7774 | 256.5117 | 1.00262 | – |
| 2025 Sep 02 17:56 | 2025 Aug 27 17:10:06 | 9.2690 | 0.00018 | 20.8748 | 115.1199 | 256.5117 | 1.00262 | – |
| 2025 Sep 01 17:56 | 2025 Aug 27 17:10:06 | 9.2690 | 0.00018 | 20.8748 | 115.1199 | 256.5117 | 1.00262 | – |
| 2025 Aug 31 17:56 | 2025 Aug 27 17:10:06 | 9.2690 | 0.00018 | 20.8748 | 115.1199 | 256.5117 | 1.00262 | – |
| 2025 Aug 30 17:56 | 2025 Aug 27 17:10:06 | 9.2690 | 0.00018 | 20.8748 | 115.1199 | 256.5117 | 1.00262 | – |
| 2025 Aug 29 17:56 | 2025 Aug 27 17:10:06 | 9.2690 | 0.00018 | 20.8748 | 115.1199 | 256.5117 | 1.00262 | – |
| 2025 Aug 28 17:57 | 2025 Aug 27 17:10:06 | 9.2690 | 0.00018 | 20.8748 | 115.1199 | 256.5117 | 1.00262 | – |
| 2025 Aug 27 17:56 | 2025 Aug 21 17:33:23 | 9.2799 | 0.00017 | 20.8777 | 111.3100 | 256.5117 | 1.00262 | – |
| 2025 Aug 26 17:56 | 2025 Aug 21 17:33:23 | 9.2799 | 0.00017 | 20.8777 | 111.3100 | 256.5117 | 1.00262 | – |
| 2025 Aug 25 17:56 | 2025 Aug 21 17:33:23 | 9.2799 | 0.00017 | 20.8777 | 111.3100 | 256.5117 | 1.00262 | – |
| 2025 Aug 24 17:56 | 2025 Aug 21 17:33:23 | 9.2799 | 0.00017 | 20.8777 | 111.3100 | 256.5117 | 1.00262 | – |
| 2025 Aug 23 17:56 | 2025 Aug 21 17:33:23 | 9.2799 | 0.00017 | 20.8777 | 111.3100 | 256.5117 | 1.00262 | – |
| 2025 Aug 22 17:56 | 2025 Aug 17 17:48:47 | 9.2878 | 0.00017 | 20.8794 | 115.0431 | 256.5117 | 1.00262 | – |
| 2025 Aug 20 17:56 | 2025 Aug 17 17:48:47 | 9.2878 | 0.00017 | 20.8794 | 115.0431 | 256.5117 | 1.00262 | – |
| 2025 Aug 19 17:56 | 2025 Aug 17 17:48:47 | 9.2878 | 0.00017 | 20.8794 | 115.0431 | 256.5117 | 1.00262 | – |