Orbital elements of KEPLER-21
| Launched | 14 April 2023 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | Canada |
| NORAD ID | 56218 |
| 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 Oct 12 17:56 | 2025 Oct 12 06:15:42 | 97.3028 | 0.00045 | 12.6053 | 174.7164 | 185.4139 | 15.55699 | – |
| 2025 Oct 11 17:57 | 2025 Oct 11 07:06:18 | 97.3031 | 0.00043 | 12.5395 | 179.1700 | 185.4139 | 15.55699 | – |
| 2025 Oct 09 17:56 | 2025 Oct 09 05:42:01 | 97.3037 | 0.00040 | 12.3993 | 186.4403 | 185.4139 | 15.55699 | – |
| 2025 Oct 08 17:56 | 2025 Oct 08 11:10:20 | 97.3039 | 0.00038 | 12.3467 | 188.3203 | 185.4139 | 15.55699 | – |
| 2025 Oct 07 17:56 | 2025 Oct 07 05:50:04 | 97.3044 | 0.00037 | 12.2635 | 193.2600 | 185.4139 | 15.55699 | – |
| 2025 Oct 05 17:56 | 2025 Oct 05 07:30:28 | 97.3042 | 0.00033 | 12.1321 | 203.4495 | 185.4139 | 15.55699 | – |
| 2025 Oct 04 17:57 | 2025 Oct 03 04:32:34 | 97.3040 | 0.00030 | 11.9875 | 214.8426 | 185.4139 | 15.55699 | – |
| 2025 Oct 03 17:57 | 2025 Oct 03 04:32:34 | 97.3040 | 0.00030 | 11.9875 | 214.8426 | 185.4139 | 15.55699 | – |
| 2025 Oct 02 17:56 | 2025 Oct 01 17:01:03 | 97.3040 | 0.00028 | 11.8867 | 224.5323 | 185.4139 | 15.55699 | – |
| 2025 Sep 30 17:56 | 2025 Sep 30 07:01:59 | 97.3043 | 0.00027 | 11.7904 | 236.2310 | 185.4139 | 15.55699 | – |
| 2025 Sep 29 17:56 | 2025 Sep 29 06:18:52 | 97.3042 | 0.00027 | 11.7203 | 241.2942 | 185.4139 | 15.55699 | – |
| 2025 Sep 28 17:56 | 2025 Sep 28 05:35:38 | 97.3041 | 0.00026 | 11.6502 | 250.9270 | 185.4139 | 15.55699 | – |
| 2025 Sep 27 17:56 | 2025 Sep 27 06:25:01 | 97.3044 | 0.00025 | 11.5846 | 259.7717 | 185.4139 | 15.55699 | – |
| 2025 Sep 26 17:56 | 2025 Sep 25 18:52:35 | 97.3048 | 0.00024 | 11.4839 | 270.7988 | 185.4139 | 15.55699 | – |
| 2025 Sep 25 17:56 | 2025 Sep 25 06:30:50 | 97.3049 | 0.00024 | 11.4489 | 274.6672 | 185.4139 | 15.55699 | – |
| 2025 Sep 24 17:56 | 2025 Sep 24 05:47:15 | 97.3052 | 0.00025 | 11.3789 | 283.0070 | 185.4139 | 15.55699 | – |
| 2025 Sep 20 17:56 | 2025 Sep 19 19:08:20 | 97.3059 | 0.00028 | 11.0769 | 315.9622 | 185.4139 | 15.55699 | – |
| 2025 Sep 19 17:56 | 2025 Sep 18 19:57:06 | 97.3060 | 0.00030 | 11.0113 | 322.0021 | 185.4139 | 15.55699 | – |
| 2025 Sep 18 17:56 | 2025 Sep 18 04:29:35 | 97.3058 | 0.00031 | 10.9675 | 325.6905 | 185.4139 | 15.55699 | – |
| 2025 Sep 15 17:56 | 2025 Sep 14 17:00:36 | 97.3056 | 0.00037 | 10.7312 | 342.2740 | 185.4139 | 15.55699 | – |