OBJECT D, 49398
Orbit data source: Space-Track
OBJECT D, 49398 is a Japanese satellite in SSO that was launched on Tue, 09 Nov 2021 UTC via an EPSILON launch vehicle from the Kagoshima Space Center University Of Tokyo (KSCUT). 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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49398 intel report (Beta)
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Identifier
Orbit
Country
JP / JPNRelated business
National Satellite Center, Vietnam Academy of Science and Te (VN)Manufacturer
VNSC/MEISEI
Mission
Non-operational Civil Com/Tech
Bus & Motor
CUBESAT 3U, Unknown motor
Mass
4 kg wet, 4 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Unknown
Shape & HBR
Box + 1 Ant, 3.5 m
Radar Cross Section
0.281 m², Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 OBJECT D
1 49398U 21102D 26095.05926344 .00015282 00000-0 54091-3 0 9994
2 49398 97.3284 138.3136 0010894 103.9511 256.2941 15.29174988242848Epoch: 2026-04-05T01:25Z
TLE epoch observation values (Epoch: 2026-04-05T01:25:20.361Z)
Latitude
-0.00006°
Longitude
-76.39135°
Altitude
483.16 km
Speed
7.623 km/s
True Right ascension
09h 13m 15s
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
19:28:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
482.694 km
Perigee altitude
467.762 km
Semi-major axis
6,853.365 km
Eccentricity
0.00109
Inclination
97.3284°
RAAN
138.3136°
Arg. of periapsis
103.9511°
True anomaly
256.17286°
Mean anomaly
256.2941°
Eccentric anomaly
256.23348°
Mean motion
3.82549 °/min
Orbital period
94.11 mins
BSTAR
0.00054091
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Other satellites on launch #102 in the year 2021 (2021-11-09 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 D 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-04-05 16:07:56.904Z | 339.76° N | 2026-04-05 16:09:56.904Z | 268.805° W | 31.427° | 2026-04-05 16:11:56.904Z | 223.184° SW |
| 5 mins | 2026-04-06 02:41:56.904Z | 146.564° SSE | 2026-04-06 02:43:56.904Z | 48.246° ENE | 39.99° | 2026-04-06 02:46:56.904Z | 356.145° N |
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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