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 Mar 17 18:56 | 2026 Mar 14 04:35:57 | 8.8844 | 0.00039 | 20.7878 | 56.3403 | 303.6674 | 1.00263 | – |
| 2026 Mar 16 18:57 | 2026 Mar 14 04:35:57 | 8.8844 | 0.00039 | 20.7878 | 56.3403 | 303.6674 | 1.00263 | – |
| 2026 Mar 15 18:56 | 2026 Mar 14 04:35:57 | 8.8844 | 0.00039 | 20.7878 | 56.3403 | 303.6674 | 1.00263 | – |
| 2026 Mar 14 18:56 | 2026 Mar 09 04:55:02 | 8.8932 | 0.00040 | 20.7901 | 53.7285 | 303.6674 | 1.00263 | – |
| 2026 Mar 13 18:57 | 2026 Mar 09 04:55:02 | 8.8932 | 0.00040 | 20.7901 | 53.7285 | 303.6674 | 1.00263 | – |
| 2026 Mar 12 18:57 | 2026 Mar 09 04:55:02 | 8.8932 | 0.00040 | 20.7901 | 53.7285 | 303.6674 | 1.00263 | – |
| 2026 Mar 11 18:56 | 2026 Mar 09 04:55:02 | 8.8932 | 0.00040 | 20.7901 | 53.7285 | 303.6674 | 1.00263 | – |
| 2026 Mar 10 18:56 | 2026 Mar 09 04:55:02 | 8.8932 | 0.00040 | 20.7901 | 53.7285 | 303.6674 | 1.00263 | – |
| 2026 Mar 09 18:56 | 2026 Mar 04 05:14:10 | 8.9021 | 0.00040 | 20.7924 | 47.3505 | 303.6674 | 1.00263 | – |
| 2026 Mar 08 18:57 | 2026 Mar 04 05:14:10 | 8.9021 | 0.00040 | 20.7924 | 47.3505 | 303.6674 | 1.00263 | – |
| 2026 Mar 07 18:57 | 2026 Mar 04 05:14:10 | 8.9021 | 0.00040 | 20.7924 | 47.3505 | 303.6674 | 1.00263 | – |
| 2026 Mar 06 18:56 | 2026 Mar 04 05:14:10 | 8.9021 | 0.00040 | 20.7924 | 47.3505 | 303.6674 | 1.00263 | – |
| 2026 Mar 05 18:56 | 2026 Mar 04 05:14:10 | 8.9021 | 0.00040 | 20.7924 | 47.3505 | 303.6674 | 1.00263 | – |
| 2026 Mar 04 18:57 | 2026 Mar 04 05:14:10 | 8.9021 | 0.00040 | 20.7924 | 47.3505 | 303.6674 | 1.00263 | – |
| 2026 Mar 03 18:56 | 2026 Feb 25 05:40:59 | 8.9160 | 0.00039 | 20.7952 | 40.9589 | 303.6674 | 1.00263 | – |
| 2026 Mar 02 18:57 | 2026 Feb 25 05:40:59 | 8.9160 | 0.00039 | 20.7952 | 40.9589 | 303.6674 | 1.00263 | – |
| 2026 Mar 01 18:57 | 2026 Feb 25 05:40:59 | 8.9160 | 0.00039 | 20.7952 | 40.9589 | 303.6674 | 1.00263 | – |
| 2026 Feb 28 18:56 | 2026 Feb 25 05:40:59 | 8.9160 | 0.00039 | 20.7952 | 40.9589 | 303.6674 | 1.00263 | – |
| 2026 Feb 27 19:05 | 2026 Feb 25 05:40:59 | 8.9160 | 0.00039 | 20.7952 | 40.9589 | 303.6674 | 1.00263 | – |
| 2026 Feb 26 20:45 | 2026 Feb 25 05:40:59 | 8.9160 | 0.00039 | 20.7952 | 40.9589 | 303.6674 | 1.00263 | – |