Orbital elements of YAOGAN-21
| Launched | 7 September 2014 |
| Flight ended | – |
| Launch site | Taiyuan Space Center, PRC |
| Owner | People's Republic of China |
| NORAD ID | 40143 |
| 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 Dec 15 18:58 | 2025 Dec 14 23:32:20 | 97.1766 | 0.00096 | 2.1464 | 34.4162 | 325.7696 | 15.23706 | – |
| 2025 Dec 14 18:56 | 2025 Dec 13 23:53:49 | 97.1764 | 0.00096 | 2.0836 | 37.5147 | 325.7696 | 15.23706 | – |
| 2025 Dec 13 18:56 | 2025 Dec 13 06:33:34 | 97.1758 | 0.00096 | 2.0375 | 39.6888 | 325.7696 | 15.23706 | – |
| 2025 Dec 12 18:57 | 2025 Dec 12 06:55:02 | 97.1757 | 0.00098 | 1.9747 | 43.3810 | 325.7696 | 15.23706 | – |
| 2025 Dec 11 18:56 | 2025 Dec 11 07:16:29 | 97.1757 | 0.00099 | 1.9119 | 46.4566 | 325.7696 | 15.23706 | – |
| 2025 Dec 10 18:56 | 2025 Dec 10 12:21:38 | 97.1754 | 0.00099 | 1.8616 | 48.6437 | 325.7696 | 15.23706 | – |
| 2025 Dec 09 18:56 | 2025 Dec 09 14:17:38 | 97.1754 | 0.00100 | 1.8030 | 50.5511 | 325.7696 | 15.23706 | – |
| 2025 Dec 08 18:56 | 2025 Dec 08 06:46:10 | 97.1757 | 0.00100 | 1.7192 | 55.4301 | 325.7696 | 15.23706 | – |
| 2025 Dec 07 18:56 | 2025 Dec 07 07:07:32 | 97.1758 | 0.00101 | 1.6564 | 58.4978 | 325.7696 | 15.23706 | – |
| 2025 Dec 06 18:56 | 2025 Dec 06 07:28:54 | 97.1761 | 0.00101 | 1.5936 | 61.4977 | 325.7696 | 15.23706 | – |
| 2025 Dec 05 18:57 | 2025 Dec 05 07:50:15 | 97.1767 | 0.00102 | 1.5308 | 64.3729 | 325.7696 | 15.23706 | – |
| 2025 Dec 04 18:57 | 2025 Dec 04 08:11:35 | 97.1771 | 0.00102 | 1.4680 | 67.3444 | 325.7696 | 15.23706 | – |
| 2025 Dec 03 18:56 | 2025 Dec 03 11:42:02 | 97.1775 | 0.00102 | 1.4136 | 69.8024 | 325.7696 | 15.23706 | – |
| 2025 Dec 02 18:56 | 2025 Dec 02 13:37:54 | 97.1778 | 0.00103 | 1.3549 | 72.6159 | 325.7696 | 15.23706 | – |
| 2025 Nov 30 18:57 | 2025 Nov 30 14:20:24 | 97.1782 | 0.00103 | 1.2293 | 78.3604 | 325.7696 | 15.23706 | – |
| 2025 Nov 29 18:56 | 2025 Nov 29 05:14:07 | 97.1781 | 0.00104 | 1.1413 | 82.5287 | 325.7696 | 15.23706 | – |
| 2025 Nov 28 18:57 | 2025 Nov 28 04:00:44 | 97.1780 | 0.00104 | 1.0743 | 85.7323 | 325.7696 | 15.23706 | – |
| 2025 Nov 27 18:57 | 2025 Nov 27 07:31:06 | 97.1779 | 0.00104 | 1.0199 | 88.1285 | 325.7696 | 15.23706 | – |
| 2025 Nov 26 18:57 | 2025 Nov 26 12:36:03 | 97.1779 | 0.00104 | 0.9696 | 90.4650 | 325.7696 | 15.23706 | – |
| 2025 Nov 25 18:57 | 2025 Nov 25 12:57:13 | 97.1777 | 0.00104 | 0.9068 | 93.4303 | 325.7696 | 15.23706 | – |
| 2025 Nov 24 18:56 | 2025 Nov 24 13:18:22 | 97.1777 | 0.00104 | 0.8440 | 96.2556 | 325.7696 | 15.23706 | – |
| 2025 Nov 23 18:57 | 2025 Nov 23 12:04:54 | 97.1779 | 0.00104 | 0.7770 | 99.4299 | 325.7696 | 15.23706 | – |
| 2025 Nov 21 18:57 | 2025 Nov 21 04:54:08 | 97.1786 | 0.00103 | 0.6304 | 106.2195 | 325.7696 | 15.23706 | – |
| 2025 Nov 20 18:56 | 2025 Nov 20 06:49:48 | 97.1789 | 0.00103 | 0.5718 | 108.9742 | 325.7696 | 15.23706 | – |
| 2025 Nov 18 18:57 | 2025 Nov 18 12:15:42 | 97.1796 | 0.00103 | 0.4587 | 114.1224 | 325.7696 | 15.23706 | – |