YAOGAN-40 01A, 57830
Orbit data source: Space-Track
YAOGAN-40 01A, 57830 is a payload satellite owned by CAST (CN) in LEO that was launched on Sun, 10 Sep 2023 UTC via a CHANG ZHENG 6A 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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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
DFH
Mission
Operational Defense Sigint
Bus & Motor
YG40, Unknown motor
Mass
~500 kg wet, ~500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 2.0 m
Radar Cross Section
5.141 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 YAOGAN-40 01A
1 57830U 23139A 26172.54541382 .00000091 00000-0 38873-4 0 9994
2 57830 85.9910 257.9982 0002238 100.3926 259.7510 14.12448250143317Epoch: 2026-06-21T13:05Z
TLE epoch observation values (Epoch: 2026-06-21T13:05:23.754Z)
Latitude
0.00006°
Longitude
151.90508°
Altitude
854.308 km
Speed
7.425 km/s
True Right ascension
17h 11m 59s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
21:32:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
849.627 km
Perigee altitude
846.393 km
Semi-major axis
7,226.147 km
Eccentricity
0.00022
Inclination
85.991°
RAAN
257.9982°
Arg. of periapsis
100.3926°
True anomaly
259.72576°
Mean anomaly
259.751°
Eccentric anomaly
259.73838°
Mean motion
3.53332 °/min
Orbital period
101.89 mins
BSTAR
0.000038873
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Other satellites on launch #139 in the year 2023 (2023-09-10 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.YAOGAN-40 01A Visibility forecast
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-06-22 16:52:16.082Z | 20.641° NNE | 2026-06-22 16:57:16.082Z | 86.222° E | 25.249° | 2026-06-22 17:01:16.082Z | 135.28° SSE |
| 8 mins | 2026-06-22 18:35:16.082Z | 332.619° NNW | 2026-06-22 18:39:16.082Z | 273.117° WNW | 29.504° | 2026-06-22 18:43:16.082Z | 216.673° SW |
| 9 mins | 2026-06-23 06:01:16.082Z | 169.857° S | 2026-06-23 06:05:16.082Z | 69.266° E | 43.161° | 2026-06-23 06:10:16.082Z | 7.997° NNE |
| 4 mins | 2026-06-23 07:46:16.082Z | 268.519° W | 2026-06-23 07:48:16.082Z | 291.91° WNW | 13.665° | 2026-06-23 07:50:16.082Z | 314.125° NW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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