OBJECT A, 40899 (Decayed)
Orbit data source: Space-Track
OBJECT A, 40899 was a Chinese satellite in LEO that was launched on Sat, 19 Sep 2015 UTC via a CHANG ZHENG 6 launch vehicle from the Taiyaun Space Center, China (TSC). Unknown objects in Earth's orbit typically refer to objects detected orbiting the Earth but have not yet been identified or cataloged. These objects could be anything from previously untracked satellites, spent rocket stages, debris from satellite collisions, or even natural meteoroids temporarily captured by Earth's gravity. This object's orbit decayed before it could be identified.
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40899 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
None
Manufacturer
Unknown
Mission
Decayed Amateur Communications
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Launch site
Object type
Unknown
Shape & HBR
Box, 0.3 m
Radar Cross Section
0.475 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 11 months ago
TLE from 11 months ago
0 OBJECT A
1 40899U 15049A 25089.22128863 .15801369 26525-5 17247-3 0 9997
2 40899 97.3955 125.4220 0009888 247.1923 112.8338 16.50187745529137Epoch: 2025-03-30T05:18Z
TLE epoch observation values (Epoch: 2025-03-30T05:18:39.337Z)
Latitude
-0°
Longitude
-142.09655°
Altitude
144.613 km
Speed
7.818 km/s
True Right ascension
08h 21m 41s
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
08:10:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
142.076 km
Perigee altitude
129.195 km
Semi-major axis
6,513.772 km
Eccentricity
0.00099
Inclination
97.3955°
RAAN
125.422°
Arg. of periapsis
247.1923°
True anomaly
112.93818°
Mean anomaly
112.8338°
Eccentric anomaly
112.88599°
Mean motion
4.12852 °/min
Orbital period
87.2 mins
BSTAR
0.00017247
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Other satellites on launch #49 in the year 2015 (2015-09-19 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.OBJECT A 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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| This satellite is decayed. |
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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