OBJECT K, 63991

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 K, 63991 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
63991, 2025-100K
Orbit
SSO
Last TLE update
8 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 8 hours ago
0 OBJECT K
1 63991U 25100K   25169.93225463  .00013421  00000-0  61983-3 0  9994
2 63991  97.4024 244.9906 0015388 149.0117 211.2029 15.20216180  5411
Epoch: 2025-06-18T22:22Z
TLE epoch observation values (Epoch: 2025-06-18T22:22:26.8Z)
Latitude
-0.00003°
Longitude
1.97174°
Altitude
517.345 km
Speed
7.6 km/s
True Right ascension
16h 19m 57s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
-78.78486°
Longitude
42.94576°
Altitude
539.981 km
Speed
7.587 km/s
Apparent Right ascension
03h 59m 25s
Apparent Declination
-70° 21' 56"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
16:45:13
Azimuth
172.563° S
Elevation
-58.976°
Doppler factor
1
Orbital elements
Apogee altitude
512.741 km
Perigee altitude
491.566 km
Semi-major axis
6,880.29 km
Eccentricity
0.00154
Inclination
97.4024°
RAAN
244.9906°
Arg. of periapsis
149.0117°
True anomaly
Unknown
Mean anomaly
211.2029°
Eccentric anomaly
Unknown
Mean motion
3.80306 °/min
Orbital period
94.66 mins
BSTAR
0.00061983
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OBJECT K 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 17:53:49.790Z11.263° NNE2025-06-19 17:56:49.790Z201.698° SSW44.104°2025-06-19 17:59:49.790Z193.835° SSW
4 mins2025-06-20 04:32:49.790Z116.804° SE2025-06-20 04:34:49.790Z54.753° ENE28.002°2025-06-20 04:36:49.790Z14.247° NNE
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