BD-20, 40938
Orbit data source: Space-Track
BD-20, 40938 is a payload satellite owned by CNSA (CN) that was launched on Tue, 29 Sep 2015 UTC via a CHANG ZHENG 3B launch vehicle from the Xichang Space Center, China (XSC). 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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40938 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Awaiting activation Defense Navigation
Bus & Motor
BD-3I, AKM?
Mass
~1,150 kg wet, ~1,150 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 5.0 m
Radar Cross Section
9.494 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 month ago
TLE from 1 month ago
0 BD-20
1 40938U 15053A 26027.67705003 -.00000079 00000-0 00000+0 0 9999
2 40938 49.4373 260.4556 0061515 187.1638 17.4903 1.00254296 37942Epoch: 2026-01-27T16:14Z
TLE epoch observation values (Epoch: 2026-01-27T16:14:57.122Z)
Latitude
-18.59243°
Longitude
86.5215°
Altitude
35,548.001 km
Speed
3.092 km/s
True Right ascension
06h 28m 51s
True Declination
-18° 34' 29"
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
14:29:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,051.072 km
Perigee altitude
35,532.257 km
Semi-major axis
42,169.802 km
Eccentricity
0.00615
Inclination
49.4373°
RAAN
260.4556°
Arg. of periapsis
187.1638°
True anomaly
17.70372°
Mean anomaly
17.4903°
Eccentric anomaly
17.59685°
Mean motion
0.25063 °/min
Orbital period
1,436.35 mins
BSTAR
0
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Other satellites on launch #53 in the year 2015 (2015-09-29 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.BD-20 Visibility
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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. |
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| BD-20 is likely not visible in the next few days. |
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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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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