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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: 3 hours ago

TLE from 3 hours ago

0 SDS-4
1 38339U 12025C   26170.21588205  .00000323  00000-0  54780-4 0  9999
2 38339  98.1377 266.1525 0005615 297.1008  62.9628 14.75822475756280

Epoch: 2026-06-19T05:10Z

TLE epoch observation values (Epoch: 2026-06-19T05:10:52.209Z)

Latitude

0.00002°

Longitude

-79.01309°

Altitude

643.76 km

Speed

7.537 km/s

True Right ascension

17h 44m 36s

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

18:57:58

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

643.539 km

Perigee altitude

635.658 km

Semi-major axis

7,017.736 km

Eccentricity

0.00056

Inclination

98.1377°

RAAN

266.1525°

Arg. of periapsis

297.1008°

True anomaly

63.02013°

Mean anomaly

62.9628°

Eccentric anomaly

62.99146°

Mean motion

3.69188 °/min

Orbital period

97.51 mins

BSTAR

0.00005478

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

H-2A DEB, 39005 (Decayed)

H-2A DEB, 54737 (Decayed)

H-2A DEB, 54722 (Decayed)

H-2A DEB, 43398 (Decayed)

H-2A DEB, 54712 (Decayed)

H-2A DEB, 54703 (Decayed)

H-2A DEB, 43397 (Decayed)

H-2A DEB, 54721 (Decayed)

H-2A DEB, 54730 (Decayed)

HORYU 2, 38340

H-2A DEB, 38347

H-2A DEB, 39002 (Decayed)

H-2A DEB, 54720 (Decayed)

H-2A DEB, 54726 (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.
8 mins	2026-06-19 18:46:10.355Z	30.364° NE	2026-06-19 18:50:10.355Z	101.06° ESE	31.924°	2026-06-19 18:54:10.355Z	167.176° S
4 mins	2026-06-19 20:25:10.355Z	314.461° NW	2026-06-19 20:26:10.355Z	297.043° NW	18.277°	2026-06-19 20:29:10.355Z	251.684° W
6 mins	2026-06-20 05:44:10.355Z	122.826° SE	2026-06-20 05:47:10.355Z	61.845° ENE	27.672°	2026-06-20 05:50:10.355Z	11.768° NNE
5 mins	2026-06-20 07:21:10.355Z	226.11° WSW	2026-06-20 07:23:10.355Z	259.854° W	20.567°	2026-06-20 07:26:10.355Z	309.812° NW

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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: 3 hours ago

TLE from 3 hours ago

TLE epoch observation values (Epoch: 2026-06-19T05:10:52.209Z)

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: 3 hours ago