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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   26033.45392633  .00000113  00000-0  33147-4 0  9990
2 43071  86.3982  17.9882 0002540  92.1018 268.0468 14.34217143424824

Epoch: 2026-02-02T10:53Z

TLE epoch observation values (Epoch: 2026-02-02T10:53:39.234Z)

Latitude

-0.00012°

Longitude

81.92573°

Altitude

780.783 km

Speed

7.463 km/s

True Right ascension

01h 11m 57s

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

03:28:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.45 km

Perigee altitude

772.817 km

Semi-major axis

7,152.771 km

Eccentricity

0.00025

Inclination

86.3982°

RAAN

17.9882°

Arg. of periapsis

92.1018°

True anomaly

268.01771°

Mean anomaly

268.0468°

Eccentric anomaly

268.03226°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

0.000033147

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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.
9 mins	2026-02-03 10:54:23.098Z	359.776° N	2026-02-03 10:59:23.098Z	122.88° SE	44.51°	2026-02-03 11:03:23.098Z	174.651° S
5 mins	2026-02-03 22:12:23.098Z	113.576° SE	2026-02-03 22:14:23.098Z	87.301° E	17.842°	2026-02-03 22:17:23.098Z	46.138° ENE
8 mins	2026-02-03 23:51:23.098Z	208.46° SW	2026-02-03 23:55:23.098Z	284.313° WNW	35.69°	2026-02-03 23:59:23.098Z	346.875° 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 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: 2026-02-02T10:53:39.234Z)

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