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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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https://www.satcat.com/sats-embedded/38339?theme=dark&initialShowStats=false

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Identifier

38339, 2012-025C

Orbit

SSO

Country

JP / JPN

Related business

JAXA (Japan Aerospace Exploration Agency) (JP)

Manufacturer

JAXA

Mission

Operational Civil Technology

Bus & Motor

SDS-1, Unknown motor

Mass

50 kg wet, 50 kg dry

Launch date (UTC)

2012-05-17 (14 years ago)

Launch vehicle

H-IIA 202

Launch site

Tanegashima Space Center (TNSTA)

Object type

Payload

Rocket body

Debris

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 & history
Last TLE update: 10 hours ago

TLE from 10 hours ago

0 SDS-4
1 38339U 12025C   26079.90203646  .00000950  00000-0  14672-3 0  9997
2 38339  98.1334 175.2853 0006068 210.9223 149.1629 14.75654414742967

Epoch: 2026-03-20T21:38Z

TLE epoch observation values (Epoch: 2026-03-20T21:38:55.950Z)

Latitude

-0.00003°

Longitude

32.12174°

Altitude

649.743 km

Speed

7.531 km/s

True Right ascension

11h 41m 08s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

12:27:32

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

644.391 km

Perigee altitude

635.873 km

Semi-major axis

7,018.269 km

Eccentricity

0.00061

Inclination

98.1334°

RAAN

175.2853°

Arg. of periapsis

210.9223°

True anomaly

149.19852°

Mean anomaly

149.1629°

Eccentric anomaly

149.18071°

Mean motion

3.69146 °/min

Orbital period

97.52 mins

BSTAR

0.00014672

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Other satellites on launch #25 in the year 2012 (2012-05-17 UTC)

H-2A DEB, 54712 (Decayed)

H-2A DEB, 38347

HORYU 2, 38340

H-2A DEB, 39006 (Decayed)

H-2A DEB, 54723 (Decayed)

H-2A DEB, 54728 (Decayed)

H-2A DEB, 54737 (Decayed)

H-2A DEB, 54717 (Decayed)

H-2A DEB, 54725 (Decayed)

H-2A DEB, 54740 (Decayed)

H-2A DEB, 54719 (Decayed)

H-2A DEB, 54736 (Decayed)

H-2A DEB, 54731 (Decayed)

H-2A DEB, 43398 (Decayed)

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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	2026-03-21 19:22:40.472Z	5.633° NNE	2026-03-21 19:25:40.472Z	316.926° NNW	42.331°	2026-03-21 19:29:40.472Z	203.904° SW
7 mins	2026-03-22 06:19:40.472Z	168.353° S	2026-03-22 06:22:40.472Z	243.741° WSW	44.915°	2026-03-22 06:26:40.472Z	346.005° N

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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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Check out SDS-4, 38339 on other resources

View SDS-4, 38339 on NASA - NSSDCA Website

View SDS-4, 38339 on Heavens-Above

View SDS-4, 38339 on Keep Track

View SDS-4, 38339 on Celestrak

View SDS-4, 38339 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

SDS-4, 38339

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-03-20T21:38:55.950Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #25 in the year 2012 (2012-05-17 UTC)

SDS-4 Visibility forecast

Co-orbital & Co-planar RSOs

Check out SDS-4, 38339 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago