Orbital elements of STTW-4
| Launched | 3 February 1990 |
| Flight ended | – |
| Launch site | Xichang Launch Facility, PRC |
| Owner | People's Republic of China |
| NORAD ID | 20473 |
| Alternative names |
SHIYAN TONGBU TONGXING WEIXING 4 DONG FANG HONG-2A 4 DFH-2A 4 CHINASAT 3 ZHONGXING 3 ZX 3 |
| 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 May 18 17:57 | 2025 May 15 15:05:41 | 14.3513 | 0.00042 | 23.2948 | 147.0278 | 15.9734 | 1.00260 | – |
| 2025 May 17 17:57 | 2025 May 15 15:05:41 | 14.3513 | 0.00042 | 23.2948 | 147.0278 | 15.9734 | 1.00260 | – |
| 2025 May 16 17:56 | 2025 May 15 15:05:41 | 14.3513 | 0.00042 | 23.2948 | 147.0278 | 15.9734 | 1.00260 | – |
| 2025 May 15 17:57 | 2025 May 15 15:05:41 | 14.3513 | 0.00042 | 23.2948 | 147.0278 | 15.9734 | 1.00260 | – |
| 2025 May 14 17:56 | 2025 May 09 04:16:40 | 14.3545 | 0.00042 | 23.2980 | 146.5142 | 15.9734 | 1.00260 | – |
| 2025 May 13 17:56 | 2025 May 09 04:16:40 | 14.3545 | 0.00042 | 23.2980 | 146.5142 | 15.9734 | 1.00260 | – |
| 2025 May 12 17:56 | 2025 May 09 04:16:40 | 14.3545 | 0.00042 | 23.2980 | 146.5142 | 15.9734 | 1.00260 | – |
| 2025 May 11 17:56 | 2025 May 09 04:16:40 | 14.3545 | 0.00042 | 23.2980 | 146.5142 | 15.9734 | 1.00260 | – |
| 2025 May 10 17:56 | 2025 May 09 04:16:40 | 14.3545 | 0.00042 | 23.2980 | 146.5142 | 15.9734 | 1.00260 | – |
| 2025 May 09 17:57 | 2025 May 09 04:16:40 | 14.3545 | 0.00042 | 23.2980 | 146.5142 | 15.9734 | 1.00260 | – |
| 2025 May 08 17:56 | 2025 May 03 04:20:26 | 14.3574 | 0.00042 | 23.3010 | 145.2117 | 15.9734 | 1.00260 | – |
| 2025 May 07 17:56 | 2025 May 03 04:20:26 | 14.3574 | 0.00042 | 23.3010 | 145.2117 | 15.9734 | 1.00260 | – |
| 2025 May 06 17:57 | 2025 May 03 04:20:26 | 14.3574 | 0.00042 | 23.3010 | 145.2117 | 15.9734 | 1.00260 | – |
| 2025 May 05 17:56 | 2025 May 03 04:20:26 | 14.3574 | 0.00042 | 23.3010 | 145.2117 | 15.9734 | 1.00260 | – |
| 2025 May 04 17:57 | 2025 May 03 04:20:26 | 14.3574 | 0.00042 | 23.3010 | 145.2117 | 15.9734 | 1.00260 | – |
| 2025 May 03 17:57 | 2025 May 03 04:20:26 | 14.3574 | 0.00042 | 23.3010 | 145.2117 | 15.9734 | 1.00260 | – |
| 2025 May 01 17:56 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 30 17:56 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 29 17:57 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 27 17:56 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 26 17:57 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 25 17:56 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 24 17:56 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 23 17:57 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 22 17:56 | 2025 Apr 21 19:02:01 | 14.3626 | 0.00038 | 23.3068 | 145.5152 | 15.9734 | 1.00260 | – |
| 2025 Apr 21 17:57 | 2025 Apr 15 19:03:25 | 14.3652 | 0.00039 | 23.3098 | 146.1207 | 15.9734 | 1.00260 | – |