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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: 9 hours ago

TLE from 9 hours ago

0 SDS-4
1 38339U 12025C   26263.57176933  .00000587  00000-0  92929-4 0  9991
2 38339  98.1373   0.1225 0006873   3.8351 356.2910 14.75949279770055

Epoch: 2026-09-20T13:43Z

TLE epoch observation values (Epoch: 2026-09-20T13:43:20.870Z)

Latitude

0.00005°

Longitude

154.8215°

Altitude

640.332 km

Speed

7.54 km/s

True Right ascension

00h 00m 29s

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

15:47:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

644.02 km

Perigee altitude

634.374 km

Semi-major axis

7,017.334 km

Eccentricity

0.00069

Inclination

98.1373°

RAAN

0.1225°

Arg. of periapsis

3.8351°

True anomaly

356.2859°

Mean anomaly

356.291°

Eccentric anomaly

356.28845°

Mean motion

3.6922 °/min

Orbital period

97.5 mins

BSTAR

0.000092929

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

H-2A DEB, 39006 (Decayed)

H-2A DEB, 54734 (Decayed)

H-2A DEB, 54722 (Decayed)

H-2A DEB, 54716 (Decayed)

H-2A DEB, 43398 (Decayed)

H-2A DEB, 39004 (Decayed)

H-2A DEB, 54703 (Decayed)

H-2A DEB, 38346 (Decayed)

GCOM W1, 38337

H-2A DEB, 38345 (Decayed)

H-2A DEB, 43397 (Decayed)

H-2A DEB, 54719 (Decayed)

KOMPSAT 3, 38338

H-2A DEB, 54730 (Decayed)

H-2A DEB, 39007 (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	2026-09-21 06:07:22.072Z	142.309° SSE	2026-09-21 06:10:22.072Z	91.989° ESE	45.38°	2026-09-21 06:14:22.072Z	2.183° NNE
7 mins	2026-09-21 19:35:22.072Z	6.708° NNE	2026-09-21 19:38:22.072Z	274.381° WNW	74.313°	2026-09-21 19:42:22.072Z	200.713° SSW

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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: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-09-20T13:43:20.870Z)

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: 9 hours ago