OBJECT XK, 65731 (Decayed)
Orbit data source: Space-Track
OBJECT XK, 65731 was 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. This object's orbit decayed before it could be identified.
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65731 intel report (Beta)
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Identifier
Orbit
Country
JP / JPNRelated business
None
Manufacturer
Unknown
Mission
Decayed 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: 2 weeks ago
TLE from 2 weeks ago
0 OBJECT XK
1 65731U 98067XK 26068.92741765 .09286799 12338-4 75526-3 0 9994
2 65731 51.6052 44.2508 0002463 211.8091 148.2786 16.39072868 26940Epoch: 2026-03-09T22:15Z
TLE epoch observation values (Epoch: 2026-03-09T22:15:28.884Z)
Latitude
-0.00009°
Longitude
-97.23296°
Altitude
170.407 km
Speed
7.805 km/s
True Right ascension
02h 57m 00s
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
15:44:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
170.415 km
Perigee altitude
167.19 km
Semi-major axis
6,546.94 km
Eccentricity
0.00025
Inclination
51.6052°
RAAN
44.2508°
Arg. of periapsis
211.8091°
True anomaly
148.29344°
Mean anomaly
148.2786°
Eccentric anomaly
148.28602°
Mean motion
4.09719 °/min
Orbital period
87.87 mins
BSTAR
0.00075526
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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
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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. |
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| This satellite is decayed. |
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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