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IRIDIUM 138, 43071

Orbit data source: Space-Track

IRIDIUM 138, 43071 is a payload satellite owned by Iridium (US) in LEO that was launched on Sat, 23 Dec 2017 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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Iframe URL

https://www.satcat.com/sats-embedded/43071?theme=dark&initialShowStats=false

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Identifier

43071, 2017-083B

Orbit

LEO

Country

Related business

Iridium Communications Inc. (US)

Manufacturer

OATK SSG Gilbert

Mission

Operational Commercial Communications

Bus & Motor

ELITEBUS, Unknown motor

Mass

860 kg wet, 700 kg dry

Launch date (UTC)

2017-12-23 (8 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Trap Box + 2 Pan, 4.8 m

Radar Cross Section

10.154 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 IRIDIUM 138
1 43071U 17083B   25363.49989685  .00000132  00000-0  40099-4 0  9993
2 43071  86.3970  32.6044 0001905 100.6904 259.4507 14.34218075419814

Epoch: 2025-12-29T11:59Z

TLE epoch observation values (Epoch: 2025-12-29T11:59:51.087Z)

Latitude

0.00002°

Longitude

114.4449°

Altitude

780.967 km

Speed

7.463 km/s

True Right ascension

02h 10m 25s

True Declination

0° 00' 00"

Sunlit

Object was in daylight 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

03:03:30

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

775.993 km

Perigee altitude

773.268 km

Semi-major axis

7,152.768 km

Eccentricity

0.00019

Inclination

86.397°

RAAN

32.6044°

Arg. of periapsis

100.6904°

True anomaly

259.42924°

Mean anomaly

259.4507°

Eccentric anomaly

259.43997°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

0.000040099

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Other satellites on launch #83 in the year 2017 (2017-12-23 UTC)

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IRIDIUM 138 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	2025-12-30 13:41:38.710Z	15.776° NNE	2025-12-30 13:45:38.710Z	80.062° E	33.745°	2025-12-30 13:49:38.710Z	148.765° SSE
6 mins	2025-12-30 15:23:38.710Z	314.064° NW	2025-12-30 15:25:38.710Z	286.598° WNW	19.384°	2025-12-30 15:29:38.710Z	233.922° WSW
9 mins	2025-12-31 02:37:38.710Z	181.584° SSW	2025-12-31 02:41:38.710Z	206.414° SW	44.971°	2025-12-31 02:46:38.710Z	2.239° NNE

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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 IRIDIUM 138, 43071 on other resources

View IRIDIUM 138, 43071 on NASA - NSSDCA Website

View IRIDIUM 138, 43071 on Heavens-Above

View IRIDIUM 138, 43071 on Keep Track

View IRIDIUM 138, 43071 on Celestrak

View IRIDIUM 138, 43071 on Gunter's Space Page

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

IRIDIUM 138, 43071

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2025-12-29T11:59:51.087Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #83 in the year 2017 (2017-12-23 UTC)

IRIDIUM 138 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDIUM 138, 43071 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 15 hours ago