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 |
| 2026 Jun 01 17:57 | 2026 Jun 01 04:54:47 | 97.2899 | 0.00058 | 4.7350 | 110.5565 | 249.6333 | 15.92175 | – |
| 2026 May 31 17:58 | 2026 May 30 19:43:20 | 97.2886 | 0.00061 | 4.6359 | 109.6944 | 249.6333 | 15.92175 | – |
| 2026 May 30 17:57 | 2026 May 30 00:06:11 | 97.2882 | 0.00062 | 4.5773 | 108.8378 | 249.6333 | 15.92175 | – |
| 2026 May 29 17:57 | 2026 May 29 05:59:21 | 97.2881 | 0.00063 | 4.5232 | 107.5940 | 249.6333 | 15.92175 | – |
| 2026 May 28 17:56 | 2026 May 28 07:20:29 | 97.2876 | 0.00064 | 4.4557 | 107.6535 | 249.6333 | 15.92175 | – |
| 2026 May 27 17:57 | 2026 May 27 05:40:02 | 97.2875 | 0.00065 | 4.3792 | 108.3060 | 249.6333 | 15.92175 | – |
| 2026 May 26 17:57 | 2026 May 26 07:00:28 | 97.2870 | 0.00065 | 4.3116 | 109.1639 | 249.6333 | 15.92175 | – |
| 2026 May 25 17:57 | 2026 May 25 06:49:58 | 97.2871 | 0.00065 | 4.2396 | 109.4720 | 249.6333 | 15.92175 | – |
| 2026 May 24 17:57 | 2026 May 24 00:36:25 | 97.2883 | 0.00065 | 4.1497 | 110.2759 | 249.6333 | 15.92175 | – |
| 2026 May 23 17:58 | 2026 May 23 06:28:05 | 97.2889 | 0.00064 | 4.0957 | 110.1597 | 249.6333 | 15.92175 | – |
| 2026 May 22 17:57 | 2026 May 22 04:46:02 | 97.2893 | 0.00065 | 4.0193 | 110.3968 | 249.6333 | 15.92175 | – |
| 2026 May 21 17:57 | 2026 May 21 06:05:09 | 97.2894 | 0.00065 | 3.9518 | 111.2724 | 249.6333 | 15.92175 | – |
| 2026 May 20 17:57 | 2026 May 20 11:56:18 | 97.2890 | 0.00066 | 3.8979 | 111.9745 | 249.6333 | 15.92175 | – |
| 2026 May 19 17:58 | 2026 May 19 07:12:00 | 97.2888 | 0.00067 | 3.8126 | 112.7993 | 249.6333 | 15.92175 | – |
| 2026 May 18 17:57 | 2026 May 18 13:02:48 | 97.2892 | 0.00068 | 3.7586 | 114.1284 | 249.6333 | 15.92175 | – |
| 2026 May 17 17:57 | 2026 May 17 11:19:33 | 97.2896 | 0.00067 | 3.6823 | 115.5773 | 249.6333 | 15.92175 | – |
| 2026 May 16 17:56 | 2026 May 16 05:03:40 | 97.2908 | 0.00066 | 3.5925 | 117.4115 | 249.6333 | 15.92175 | – |
| 2026 May 15 17:57 | 2026 May 15 06:21:30 | 97.2918 | 0.00066 | 3.5251 | 118.4208 | 249.6333 | 15.92175 | – |
| 2026 May 14 17:58 | 2026 May 14 06:08:19 | 97.2913 | 0.00066 | 3.4532 | 119.2989 | 249.6333 | 15.92175 | – |
| 2026 May 13 17:58 | 2026 May 13 08:56:38 | 97.2901 | 0.00066 | 3.3904 | 119.8088 | 249.6333 | 15.92175 | – |
| 2026 May 12 17:58 | 2026 May 12 07:12:15 | 97.2897 | 0.00066 | 3.3141 | 121.6290 | 249.6333 | 15.92175 | – |
| 2026 May 11 17:56 | 2026 May 11 06:58:32 | 97.2893 | 0.00066 | 3.2423 | 123.2782 | 249.6333 | 15.92175 | – |
| 2026 May 10 17:57 | 2026 May 10 06:44:37 | 97.2895 | 0.00065 | 3.1705 | 125.3686 | 249.6333 | 15.92175 | – |
| 2026 May 09 17:57 | 2026 May 09 00:26:57 | 97.2896 | 0.00063 | 3.0808 | 127.2160 | 249.6333 | 15.92175 | – |
| 2026 May 08 17:57 | 2026 May 08 06:16:12 | 97.2899 | 0.00062 | 3.0270 | 128.4119 | 249.6333 | 15.92175 | – |
| 2026 May 07 17:58 | 2026 May 07 06:01:40 | 97.2901 | 0.00062 | 2.9553 | 128.2410 | 249.6333 | 15.92175 | – |
| 2026 May 06 17:57 | 2026 May 06 11:50:37 | 97.2902 | 0.00062 | 2.9015 | 129.3473 | 249.6333 | 15.92175 | – |
| 2026 May 05 17:57 | 2026 May 05 07:02:54 | 97.2899 | 0.00062 | 2.8163 | 130.4099 | 249.6333 | 15.92175 | – |