SDS-4, 38339
Orbit data source: Space-Track
SDS-4, 38339 is a payload satellite owned by JAXA (JP) in SSO that was launched on Thu, 17 May 2012 UTC via an H-IIA 202 launch vehicle from the Tanegashima Space Center (TNSTA). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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38339 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
JP / JPNRelated business
Manufacturer
JAXA
Mission
Operational Civil Technology
Bus & Motor
SDS-1, Unknown motor
Mass
50 kg wet, 50 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 0.8 m
Radar Cross Section
0.514 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 SDS-4
1 38339U 12025C 25309.26953956 .00001355 00000-0 20808-3 0 9995
2 38339 98.1435 38.8177 0005740 299.3626 60.7009 14.75227859722963Epoch: 2025-11-05T06:28Z
TLE epoch observation values (Epoch: 2025-11-05T06:28:08.217Z)
Latitude
0.00001°
Longitude
-102.96117°
Altitude
645.464 km
Speed
7.536 km/s
True Right ascension
02h 35m 16s
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
10:13:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
645.516 km
Perigee altitude
637.457 km
Semi-major axis
7,019.623 km
Eccentricity
0.00057
Inclination
98.1435°
RAAN
38.8177°
Arg. of periapsis
299.3626°
True anomaly
60.75828°
Mean anomaly
60.7009°
Eccentric anomaly
60.72959°
Mean motion
3.69039 °/min
Orbital period
97.55 mins
BSTAR
0.00020808
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Other satellites on launch #25 in the year 2012 (2012-05-17 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.SDS-4 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-11-05 18:26:48.508Z | 35.801° NE | 2025-11-05 18:29:48.508Z | 90.851° ESE | 30.999° | 2025-11-05 18:33:48.508Z | 164.274° S |
| 4 mins | 2025-11-05 20:04:48.508Z | 320.278° NNW | 2025-11-05 20:06:48.508Z | 284.923° WNW | 18.634° | 2025-11-05 20:08:48.508Z | 254.672° W |
| 6 mins | 2025-11-06 05:24:48.508Z | 117.001° SE | 2025-11-06 05:26:48.508Z | 77.419° E | 27.113° | 2025-11-06 05:30:48.508Z | 9.235° NNE |
| 5 mins | 2025-11-06 07:01:48.508Z | 230.792° WSW | 2025-11-06 07:03:48.508Z | 267.882° W | 21.208° | 2025-11-06 07:06:48.508Z | 314.327° NW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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