YAOGAN 21, 40143
Orbit data source: Space-Track
YAOGAN 21, 40143 is a payload satellite owned by PLA GAD (CN) in SSO that was launched on Mon, 08 Sep 2014 UTC via a CHANG ZHENG 4B launch vehicle from the Taiyaun Space Center, China (TSC). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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40143 intel report (Beta)
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TLE from 9 hours ago
0 YAOGAN 21
1 40143U 14053A 25196.82085630 .00004958 00000-0 20928-3 0 9990
2 40143 97.1969 246.3940 0011064 244.1075 115.9022 15.23664489603757TLE epoch observation values (Epoch: 2025-07-15T19:42:01.984Z)
Visualization orbit readout
Visualization observer readout
Other satellites on launch #53 in the year 2014 (2014-09-08 UTC)
YAOGAN 21 Visibility forecast
Observer location: undefined°, undefined°
Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-07-16 16:45:54.597Z | 335.978° NNW | 2025-07-16 16:47:54.597Z | 281.492° WNW | 27.446° | 2025-07-16 16:50:54.597Z | 224.639° SW |
| 5 mins | 2025-07-17 03:21:54.597Z | 164.397° S | 2025-07-17 03:23:54.597Z | 124.183° SE | 44.739° | 2025-07-17 03:26:54.597Z | 349.933° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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