BD-18, 40748
Orbit data source: Space-Track
BD-18, 40748 is a payload satellite owned by CNSA (CN) in MEO that was launched on Sat, 25 Jul 2015 UTC via a CHANG ZHENG 3B/YZ-1 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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40748 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Awaiting activation Defense Navigation
Bus & Motor
BD-3M, Unknown motor
Mass
1,014 kg wet, ~850 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 5.0 m
Radar Cross Section
8.984 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 BD-18
1 40748U 15037A 25309.95116606 -.00000049 00000-0 00000-0 0 9996
2 40748 55.0708 309.7267 0012900 262.5057 97.3561 1.86229007 69969Epoch: 2025-11-05T22:49Z
TLE epoch observation values (Epoch: 2025-11-05T22:49:40.747Z)
Latitude
-0.00009°
Longitude
-78.11277°
Altitude
21,533.204 km
Speed
3.779 km/s
True Right ascension
20h 38m 53s
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
12:17:28
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
21,564.254 km
Perigee altitude
21,492.255 km
Semi-major axis
27,906.392 km
Eccentricity
0.00129
Inclination
55.0708°
RAAN
309.7267°
Arg. of periapsis
262.5057°
True anomaly
97.50268°
Mean anomaly
97.3561°
Eccentric anomaly
97.42939°
Mean motion
0.46557 °/min
Orbital period
773.24 mins
BSTAR
0
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Other satellites on launch #37 in the year 2015 (2015-07-25 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-18 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-11-06 16:13:24.985Z | 305.782° NW | 2025-11-06 16:13:24.985Z | 305.782° NW | 10.125° | 2025-11-06 16:17:24.985Z | 304.291° NW |
| 391 mins | 2025-11-06 23:25:24.985Z | 183.253° SSW | 2025-11-07 02:21:24.985Z | 107.295° ESE | 44.806° | 2025-11-07 05:56:24.985Z | 75.933° E |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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