Orbital elements of INTELSAT 21
| Launched | 18 August 2012 |
| Flight ended | – |
| Launch site | Sea Launch Platform (mobile) |
| Owner | International Telecommunications Satellite Organization (INTELSAT) |
| NORAD ID | 38749 |
| Alternative names |
IS-21 |
| 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 15 05:11:22 | 0.0307 | 0.00020 | 17.4859 | 285.5349 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 14 17:56 | 2025 Sep 14 05:12:34 | 0.0341 | 0.00020 | 17.7517 | 279.2220 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 12 17:57 | 2025 Sep 11 20:41:11 | 0.0412 | 0.00020 | 18.0811 | 266.6528 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 11 17:57 | 2025 Sep 11 05:16:12 | 0.0433 | 0.00020 | 18.1387 | 271.0762 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 10 17:56 | 2025 Sep 10 04:39:38 | 0.0463 | 0.00020 | 18.2041 | 266.2221 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 08 17:57 | 2025 Sep 08 06:39:54 | 0.0514 | 0.00020 | 18.2782 | 257.6690 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 07 17:56 | 2025 Sep 07 01:55:33 | 0.0543 | 0.00020 | 18.2906 | 252.7119 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 06 20:41 | 2025 Sep 06 05:22:12 | 0.0562 | 0.00020 | 18.2732 | 249.6457 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 03 17:57 | 2025 Sep 02 04:36:38 | 0.0187 | 0.00020 | 8.8163 | 26.5062 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 02 17:56 | 2025 Sep 02 04:36:38 | 0.0187 | 0.00020 | 8.8163 | 26.5062 | 186.4488 | 1.00272 | 6.243 |
| 2025 Sep 01 17:56 | 2025 Sep 01 05:28:02 | 0.0240 | 0.00020 | 8.2961 | 35.0791 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 31 17:56 | 2025 Aug 31 05:29:09 | 0.0158 | 0.00020 | 8.7894 | 24.3283 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 30 17:56 | 2025 Aug 30 03:47:22 | 0.0179 | 0.00020 | 8.8734 | 23.2895 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 29 17:56 | 2025 Aug 29 05:31:15 | 0.0164 | 0.00020 | 9.3142 | 15.4269 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 28 17:57 | 2025 Aug 27 18:56:14 | 0.0164 | 0.00016 | 12.1905 | 320.5546 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 27 17:56 | 2025 Aug 26 22:42:17 | 0.0160 | 0.00022 | 14.7360 | 317.0896 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 26 17:56 | 2025 Aug 25 21:08:38 | 0.0262 | 0.00022 | 16.4653 | 290.7928 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 25 17:56 | 2025 Aug 24 21:24:38 | 0.0397 | 0.00022 | 18.9445 | 253.3126 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 24 17:56 | 2025 Aug 23 21:08:38 | 0.0404 | 0.00022 | 18.6808 | 256.9601 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 23 17:56 | 2025 Aug 20 19:23:11 | 0.0435 | 0.00021 | 18.3072 | 265.8220 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 22 17:56 | 2025 Aug 20 19:23:11 | 0.0435 | 0.00021 | 18.3072 | 265.8220 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 20 17:56 | 2025 Aug 19 20:53:38 | 0.0446 | 0.00021 | 18.2837 | 265.2551 | 186.4488 | 1.00272 | 6.243 |
| 2025 Aug 19 17:56 | 2025 Aug 18 21:34:38 | 0.0457 | 0.00021 | 18.2882 | 263.8039 | 186.4488 | 1.00272 | 6.243 |