YAOGAN 27, 40878
Orbit data source: Space-Track
YAOGAN 27, 40878 is a payload satellite owned by PLA GAD (CN) in SSO that was launched on Thu, 27 Aug 2015 UTC via a CHANG ZHENG 4C 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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40878 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
SAST
Mission
Operational Defense Imaging
Bus & Motor
JB-9, Unknown motor
Mass
1,040 kg wet, 1,040 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 2.5 m
Radar Cross Section
4.795 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 4 hours ago
TLE from 4 hours ago
0 YAOGAN 27
1 40878U 15040A 26297.26355547 -.00000256 00000-0 -56275-3 0 9993
2 40878 100.1324 278.1273 0007616 279.0234 81.0018 13.16074538534645Epoch: 2026-10-24T06:19Z
TLE epoch observation values (Epoch: 2026-10-24T06:19:31.192Z)
Latitude
0.00001°
Longitude
150.57508°
Altitude
1,201.576 km
Speed
7.254 km/s
True Right ascension
18h 32m 30s
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
05:58:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,202.89 km
Perigee altitude
1,191.351 km
Semi-major axis
7,575.257 km
Eccentricity
0.00076
Inclination
100.1324°
RAAN
278.1273°
Arg. of periapsis
279.0234°
True anomaly
81.08801°
Mean anomaly
81.0018°
Eccentric anomaly
81.0449°
Mean motion
3.2919 °/min
Orbital period
109.36 mins
BSTAR
-0.00056275
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Other satellites on launch #40 in the year 2015 (2015-08-27 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 27 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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-10-24 12:23:36.277Z | 4.605° NNE | 2026-10-24 12:29:36.277Z | 294.542° NW | 55.156° | 2026-10-24 12:36:36.277Z | 216.807° SW |
| 8 mins | 2026-10-24 21:06:36.277Z | 90.312° ESE | 2026-10-24 21:09:36.277Z | 61.125° ENE | 20.605° | 2026-10-24 21:14:36.277Z | 14.794° NNE |
| 12 mins | 2026-10-24 22:51:36.277Z | 169.44° S | 2026-10-24 22:56:36.277Z | 222.906° SW | 77.746° | 2026-10-24 23:03:36.277Z | 342.088° N |
| 8 mins | 2026-10-25 10:21:36.277Z | 59.644° ENE | 2026-10-25 10:24:36.277Z | 89.574° E | 20.655° | 2026-10-25 10:29:36.277Z | 136.006° SSE |
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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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