OBJECT J, 63990

Orbit data source: Space-Track

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Recently launched and/or uncataloged satellites may have evolving metadata. Metadata may include but not limited to: Owner, Maufacturer, Bus, Motor, and Mission.

OBJECT J, 63990 is a Chinese satellite in SSO that was launched on Wed, 14 May 2025 UTC via a CHANG ZHENG 2D launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). 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.

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Identifier
63990, 2025-100J
Orbit
SSO
Last TLE update
10 hours ago
Origin
Flag of CNCN / PRC
Manufacturer
Unknown
Mission
Operational spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
2025-05-14 (1 month ago)
Launch vehicle
CHANG ZHENG 2D
Launch site
Jiuquan Satellite Launch Center, China (JSC)
Object type
Unknown
Shape & HBR
Unknown
Radar Cross Section
Large (>1 m²)

Expand to show TLE details & history

TLE from 10 hours ago
0 OBJECT J
1 63990U 25100J   25169.87460719  .00011782  00000-0  55236-3 0  9993
2 63990  97.4021 244.9137 0013785 136.9190 223.3127 15.19750168  5395
Epoch: 2025-06-18T20:59Z
TLE epoch observation values (Epoch: 2025-06-18T20:59:26.061Z)
Latitude
0.00004°
Longitude
22.70473°
Altitude
516.598 km
Speed
7.601 km/s
True Right ascension
16h 19m 39s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
70.20685°
Longitude
-135.84964°
Altitude
510.251 km
Speed
7.62 km/s
Apparent Right ascension
05h 46m 46s
Apparent Declination
18° 15' 40"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
17:47:24
Azimuth
0.178° NNE
Elevation
-31.823°
Doppler factor
1
Orbital elements
Apogee altitude
513.047 km
Perigee altitude
494.075 km
Semi-major axis
6,881.698 km
Eccentricity
0.00138
Inclination
97.4021°
RAAN
244.9137°
Arg. of periapsis
136.919°
True anomaly
Unknown
Mean anomaly
223.3127°
Eccentric anomaly
Unknown
Mean motion
3.80189 °/min
Orbital period
94.69 mins
BSTAR
0.00055236
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OBJECT J Visibility forecast

Observer location: undefined°, undefined°

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.
6 mins2025-06-19 18:05:50.536Z1.099° NNE2025-06-19 18:08:50.536Z260.924° W39.947°2025-06-19 18:11:50.536Z205.814° SW
5 mins2025-06-20 04:44:50.536Z134.748° SE2025-06-20 04:46:50.536Z55.092° ENE36.083°2025-06-20 04:49:50.536Z0.579° NNE
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