OBJECT K, 66659
Orbit data source: Space-Track
OBJECT K, 66659 is a South Korean satellite in SSO that was launched on Wed, 26 Nov 2025 UTC via an NURI launch vehicle from the Naro Space Center, South Korea (NSC). 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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66659 intel report (Beta)
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Identifier
Orbit
Country
KR / SKORRelated business
Manufacturer
COSMW
Mission
Operational Commercial Imaging
Bus & Motor
CUBESAT 3U, Unknown motor
Mass
5 kg wet, 5 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Unknown
Shape & HBR
Box, 1.1 m
Radar Cross Section
0.035 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 OBJECT K
1 66659U 25274K 26152.26913423 .00002567 00000-0 24717-3 0 9992
2 66659 97.7487 81.8892 0014910 73.3429 286.9426 14.93763625 27850Epoch: 2026-06-01T06:27Z
TLE epoch observation values (Epoch: 2026-06-01T06:27:33.197Z)
Latitude
-0.00007°
Longitude
95.24201°
Altitude
586.245 km
Speed
7.569 km/s
True Right ascension
05h 27m 33s
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
03:18:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
593.608 km
Perigee altitude
572.849 km
Semi-major axis
6,961.366 km
Eccentricity
0.00149
Inclination
97.7487°
RAAN
81.8892°
Arg. of periapsis
73.3429°
True anomaly
286.77907°
Mean anomaly
286.9426°
Eccentric anomaly
286.86084°
Mean motion
3.73681 °/min
Orbital period
96.34 mins
BSTAR
0.00024717
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Other satellites on launch #274 in the year 2025 (2025-11-26 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 K 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-01 19:26:15.320Z | 172.968° S | 2026-06-01 19:30:15.320Z | 301.838° NW | 42.999° | 2026-06-01 19:33:15.320Z | 342.787° N |
| 6 mins | 2026-06-02 08:45:15.320Z | 345.364° N | 2026-06-02 08:48:15.320Z | 271.347° WNW | 29.758° | 2026-06-02 08:51:15.320Z | 223.155° SW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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