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 Commercial Technology
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
2025-05-14 (3 months ago)
Launch vehicle
CHANG ZHENG 2D
Launch site
Jiuquan Satellite Launch Center, China (JSC)
Object type
Unknown
Shape & HBR
Box + 2 Pan, 0.1 m
Radar Cross Section
0.135 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 8 hours ago
0 OBJECT K
1 63991U 25100K   25211.18875774  .00017201  00000-0  76804-3 0  9993
2 63991  97.4003 285.5179 0013386  17.4559 342.7134 15.21346914 11688
Epoch: 2025-07-30T04:31Z
TLE epoch observation values (Epoch: 2025-07-30T04:31:48.668Z)
Latitude
-0.00007°
Longitude
-90.50644°
Altitude
496.075 km
Speed
7.621 km/s
True Right ascension
19h 02m 04s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
70.04499°
Longitude
-111.01007°
Altitude
508.583 km
Speed
7.619 km/s
Apparent Right ascension
15h 20m 56s
Apparent Declination
19° 42' 06"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
02:17:13
Azimuth
342.893° N
Elevation
-28.558°
Doppler factor
1
Orbital elements
Apogee altitude
507.946 km
Perigee altitude
489.535 km
Semi-major axis
6,876.878 km
Eccentricity
0.00134
Inclination
97.4003°
RAAN
285.5179°
Arg. of periapsis
17.4559°
True anomaly
342.66775°
Mean anomaly
342.7134°
Eccentric anomaly
342.69058°
Mean motion
3.80589 °/min
Orbital period
94.59 mins
BSTAR
0.00076804
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