OBJECT B, 66651
Orbit data source: Space-Track
OBJECT B, 66651 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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66651 intel report (Beta)
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Identifier
Orbit
Country
KR / SKORRelated business
None
Manufacturer
Unknown
Mission
Operational Civil Technology
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Launch site
Object type
Unknown
Shape & HBR
Box, 1.1 m
Radar Cross Section
0.080 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 OBJECT B
1 66651U 25274B 26152.23809932 .00002948 00000-0 28769-3 0 9994
2 66651 97.7482 81.6085 0013507 50.6711 309.5704 14.93130669 27837Epoch: 2026-06-01T05:42Z
TLE epoch observation values (Epoch: 2026-06-01T05:42:51.781Z)
Latitude
0.00004°
Longitude
106.16445°
Altitude
585.237 km
Speed
7.571 km/s
True Right ascension
05h 26m 26s
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
03:18:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
594.603 km
Perigee altitude
575.792 km
Semi-major axis
6,963.335 km
Eccentricity
0.00135
Inclination
97.7482°
RAAN
81.6085°
Arg. of periapsis
50.6711°
True anomaly
309.45096°
Mean anomaly
309.5704°
Eccentric anomaly
309.51069°
Mean motion
3.73523 °/min
Orbital period
96.38 mins
BSTAR
0.00028769
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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 B 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-01 18:43:14.869Z | 129.776° SE | 2026-06-01 18:46:14.869Z | 67.555° E | 28.731° | 2026-06-01 18:49:14.869Z | 10.881° NNE |
| 4 mins | 2026-06-01 20:20:14.869Z | 240.64° WSW | 2026-06-01 20:21:14.869Z | 258.039° W | 16.761° | 2026-06-01 20:24:14.869Z | 307.311° NW |
| 7 mins | 2026-06-02 08:01:14.869Z | 19.9° NNE | 2026-06-02 08:04:14.869Z | 93.805° ESE | 43.002° | 2026-06-02 08:08:14.869Z | 185.052° SSW |
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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