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.
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65731 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
JP / JPNRelated business
None
Manufacturer
Unknown
Mission
Operational Amateur Technology
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Launch site
Object type
Unknown
Shape & HBR
Box + 1 Tether, 0.1 m
Radar Cross Section
0.015 m²
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 OBJECT XK
1 65731U 98067XK 26035.68271661 .00241544 00000-0 11141-2 0 9995
2 65731 51.6223 220.7082 0003525 230.7997 129.2693 15.82313285 21638Epoch: 2026-02-04T16:23Z
TLE epoch observation values (Epoch: 2026-02-04T16:23:06.715Z)
Latitude
0.00002°
Longitude
-159.91555°
Altitude
326.146 km
Speed
7.713 km/s
True Right ascension
14h 42m 49s
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
03:04:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
326.781 km
Perigee altitude
322.056 km
Semi-major axis
6,702.555 km
Eccentricity
0.00035
Inclination
51.6223°
RAAN
220.7082°
Arg. of periapsis
230.7997°
True anomaly
129.30056°
Mean anomaly
129.2693°
Eccentric anomaly
129.28493°
Mean motion
3.95533 °/min
Orbital period
91.02 mins
BSTAR
0.0011141
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Other satellites on launch #67 in the year 1998 (1998-11-20 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 XK 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-02-05 15:18:52.413Z | 244.113° WSW | 2026-02-05 15:21:52.413Z | 1.584° NNE | 38.12° | 2026-02-05 15:23:52.413Z | 44.389° NE |
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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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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 |
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