Orbital elements of KEPLER-21
| Launched | 14 April 2023 |
| Flight ended | 9 July 2026 |
| 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 Jul 17 17:57 | 2026 Jul 10 00:59:17 | 97.2696 | 0.00098 | 7.5738 | 228.7928 | 131.2529 | 16.46722 | – |
| 2026 Jul 16 17:56 | 2026 Jul 10 00:59:17 | 97.2696 | 0.00098 | 7.5738 | 228.7928 | 131.2529 | 16.46722 | – |
| 2026 Jul 15 17:57 | 2026 Jul 09 16:13:07 | 97.2713 | 0.00095 | 7.5456 | 220.6541 | 131.2529 | 16.46722 | – |
| 2026 Jul 14 17:56 | 2026 Jul 09 16:13:07 | 97.2713 | 0.00095 | 7.5456 | 220.6541 | 131.2529 | 16.46722 | – |
| 2026 Jul 13 17:56 | 2026 Jul 09 16:13:07 | 97.2713 | 0.00095 | 7.5456 | 220.6541 | 131.2529 | 16.46722 | – |
| 2026 Jul 12 17:56 | 2026 Jul 09 16:13:07 | 97.2713 | 0.00095 | 7.5456 | 220.6541 | 131.2529 | 16.46722 | – |
| 2026 Jul 11 17:56 | 2026 Jul 09 16:13:07 | 97.2713 | 0.00095 | 7.5456 | 220.6541 | 131.2529 | 16.46722 | – |
| 2026 Jul 09 17:56 | 2026 Jul 08 18:11:31 | 97.2745 | 0.00084 | 7.4757 | 206.2164 | 131.2529 | 16.46722 | – |
| 2026 Jul 08 17:56 | 2026 Jul 08 12:18:09 | 97.2749 | 0.00083 | 7.4571 | 203.4941 | 131.2529 | 16.46722 | – |
| 2026 Jul 07 17:56 | 2026 Jul 07 05:18:53 | 97.2763 | 0.00078 | 7.3597 | 191.7343 | 131.2529 | 16.46722 | – |
| 2026 Jul 06 17:57 | 2026 Jul 05 17:47:59 | 97.2801 | 0.00075 | 7.2489 | 184.4291 | 131.2529 | 16.46722 | – |
| 2026 Jul 05 17:56 | 2026 Jul 04 22:31:32 | 97.2812 | 0.00075 | 7.1889 | 179.6585 | 131.2529 | 16.46722 | – |
| 2026 Jul 04 17:56 | 2026 Jul 04 06:11:49 | 97.2821 | 0.00074 | 7.1383 | 176.4896 | 131.2529 | 16.46722 | – |
| 2026 Jul 03 17:57 | 2026 Jul 02 08:06:02 | 97.2822 | 0.00072 | 6.9960 | 167.3667 | 131.2529 | 16.46722 | – |
| 2026 Jul 02 17:56 | 2026 Jul 02 06:36:43 | 97.2811 | 0.00072 | 6.9914 | 167.5924 | 131.2529 | 16.46722 | – |
| 2026 Jul 01 17:56 | 2026 Jul 01 00:49:31 | 97.2827 | 0.00070 | 6.8997 | 162.9742 | 131.2529 | 16.46722 | – |
| 2026 Jun 30 17:56 | 2026 Jun 28 17:38:30 | 97.2870 | 0.00061 | 6.7304 | 161.5980 | 131.2529 | 16.46722 | – |
| 2026 Jun 29 17:57 | 2026 Jun 28 17:38:30 | 97.2870 | 0.00061 | 6.7304 | 161.5980 | 131.2529 | 16.46722 | – |
| 2026 Jun 28 17:56 | 2026 Jun 27 17:45:08 | 97.2875 | 0.00060 | 6.6573 | 160.0359 | 131.2529 | 16.46722 | – |
| 2026 Jun 27 17:55 | 2026 Jun 27 07:17:46 | 97.2876 | 0.00059 | 6.6253 | 158.5888 | 131.2529 | 16.46722 | – |
| 2026 Jun 26 17:56 | 2026 Jun 26 05:53:27 | 97.2870 | 0.00054 | 6.5476 | 154.9149 | 131.2529 | 16.46722 | – |
| 2026 Jun 25 17:56 | 2026 Jun 25 05:57:54 | 97.2876 | 0.00053 | 6.4746 | 151.8481 | 131.2529 | 16.46722 | – |
| 2026 Jun 24 17:55 | 2026 Jun 23 18:02:58 | 97.2870 | 0.00052 | 6.3653 | 152.0786 | 131.2529 | 16.46722 | – |
| 2026 Jun 23 17:56 | 2026 Jun 22 19:35:20 | 97.2870 | 0.00050 | 6.2970 | 149.6564 | 131.2529 | 16.46722 | – |
| 2026 Jun 22 17:56 | 2026 Jun 20 07:39:03 | 97.2870 | 0.00047 | 6.1151 | 140.1303 | 131.2529 | 16.46722 | – |
| 2026 Jun 21 17:57 | 2026 Jun 20 07:39:03 | 97.2870 | 0.00047 | 6.1151 | 140.1303 | 131.2529 | 16.46722 | – |
| 2026 Jun 20 17:56 | 2026 Jun 20 07:39:03 | 97.2870 | 0.00047 | 6.1151 | 140.1303 | 131.2529 | 16.46722 | – |