OBJECT XK, 65731
Orbit data source: Space-Track
You're viewing an Uncataloged Satellite
Recently launched and/or uncataloged satellites may have evolving metadata. Metadata may include but not limited to: Owner, Maufacturer, Bus, Motor, and Mission.
OBJECT XK, 65731 is a Japanese satellite in LEO that was delivered to and deployed from the ISS. 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.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
65731 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
JP / JPNRelated business
None
Manufacturer
Unknown
Mission
Operational spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Launch site
Object type
Unknown
Shape & HBR
Unknown shape, 1.1 m
Radar Cross Section
RCS unknown
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 OBJECT XK
1 65731U 98067XK 25298.52335059 .00077867 00000-0 10692-2 0 9995
2 65731 51.6330 20.0709 0004123 13.5816 346.5286 15.56618637 5618Epoch: 2025-10-25T12:33Z
TLE epoch observation values (Epoch: 2025-10-25T12:33:37.490Z)
Latitude
-0.00004°
Longitude
157.51199°
Altitude
395.478 km
Speed
7.676 km/s
True Right ascension
01h 20m 17s
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
05:05:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
400.756 km
Perigee altitude
395.168 km
Semi-major axis
6,776.099 km
Eccentricity
0.00041
Inclination
51.633°
RAAN
20.0709°
Arg. of periapsis
13.5816°
True anomaly
346.51759°
Mean anomaly
346.5286°
Eccentric anomaly
346.52309°
Mean motion
3.89111 °/min
Orbital period
92.52 mins
BSTAR
0.0010692
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 #67 in the year 1998 (1998-11-20 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.OBJECT XK 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-10-26 13:39:47.849Z | 337.69° N | 2025-10-26 13:41:47.849Z | 26.048° NE | 21.467° | 2025-10-26 13:43:47.849Z | 73.258° E |
| 4 mins | 2025-10-26 15:16:47.849Z | 281.672° WNW | 2025-10-26 15:17:47.849Z | 248.88° W | 34.338° | 2025-10-26 15:20:47.849Z | 150.056° SSE |
| 4 mins | 2025-10-27 07:53:47.849Z | 219.492° SW | 2025-10-27 07:55:47.849Z | 102.003° ESE | 42.077° | 2025-10-27 07:57:47.849Z | 59.03° ENE |
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 ascending 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 ascending order |
|---|