KSLV-II R/B, 66663
Orbit data source: Space-Track
KSLV-II R/B, 66663 is space debris in SSO originally from a launch on Wed, 26 Nov 2025 UTC launched from the Naro Space Center, South Korea (NSC). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
66663 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
KR / SKORRelated business
Manufacturer
KARI
Mission
Spacecraft
Bus & Motor
Unknown
Mass
1,250 kg wet, 1,250 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 8.0 m
Radar Cross Section
10.006 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 22 hours ago
TLE from 22 hours ago
0 KSLV-II R/B
1 66663U 25274P 26151.80146681 -.00001385 00000-0 -10581-3 0 9993
2 66663 97.7509 82.8988 0060701 98.1294 262.6820 14.98713106 27876Epoch: 2026-05-31T19:14Z
TLE epoch observation values (Epoch: 2026-05-31T19:14:06.732Z)
Latitude
-0.00006°
Longitude
-94.92717°
Altitude
579.549 km
Speed
7.568 km/s
True Right ascension
05h 31m 35s
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
03:19:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
610.044 km
Perigee altitude
525.717 km
Semi-major axis
6,946.017 km
Eccentricity
0.00607
Inclination
97.7509°
RAAN
82.8988°
Arg. of periapsis
98.1294°
True anomaly
261.99277°
Mean anomaly
262.682°
Eccentric anomaly
262.33731°
Mean motion
3.74921 °/min
Orbital period
96.02 mins
BSTAR
-0.00010581
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #274 in the year 2025 (2025-11-26 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.KSLV-II R/B Visibility forecast
Loading observer location...
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 19:23:43.580Z | 164.686° S | 2026-06-01 19:26:43.580Z | 146.94° SSE | 44.28° | 2026-06-01 19:30:43.580Z | 348.772° N |
| 6 mins | 2026-06-02 08:39:43.580Z | 352.221° N | 2026-06-02 08:41:43.580Z | 304.052° NW | 35.853° | 2026-06-02 08:45:43.580Z | 212.301° SW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|