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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 embed code

<iframe src="https://www.satcat.com/sats-embedded/43071?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

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

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ISO8601 Format

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, 4.7 m

Radar Cross Section

14.423 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 14 hours ago

TLE from 14 hours ago

0 IRIDIUM 138
1 43071U 17083B   25243.07943303  .00000008  00000-0 -42960-5 0  9994
2 43071  86.3895  82.9605 0001490  88.4695 271.6671 14.34217529402554

Epoch: 2025-08-31T01:54Z

TLE epoch observation values (Epoch: 2025-08-31T01:54:23.013Z)

Latitude

-0.00009°

Longitude

74.86008°

Altitude

780.688 km

Speed

7.464 km/s

True Right ascension

05h 31m 50s

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

08:00:47

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

775.698 km

Perigee altitude

773.567 km

Semi-major axis

7,152.77 km

Eccentricity

0.00015

Inclination

86.3895°

RAAN

82.9605°

Arg. of periapsis

88.4695°

True anomaly

271.65003°

Mean anomaly

271.6671°

Eccentric anomaly

271.65857°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

-0.000004296

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

IRIDIUM 138 Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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.
6 mins	2025-09-01 00:15:52.280Z	38.391° NE	2025-09-01 00:18:52.280Z	75.29° E	16.032°	2025-09-01 00:21:52.280Z	112.248° ESE
8 mins	2025-09-01 01:56:52.280Z	339.688° N	2025-09-01 01:59:52.280Z	275.097° WNW	38.792°	2025-09-01 02:04:52.280Z	196.567° SSW
8 mins	2025-09-01 13:11:52.280Z	141.805° SSE	2025-09-01 13:15:52.280Z	72.798° E	29.174°	2025-09-01 13:19:52.280Z	21.8° NNE
6 mins	2025-09-01 14:53:52.280Z	244.544° WSW	2025-09-01 14:55:52.280Z	276.323° WNW	22.964°	2025-09-01 14:59:52.280Z	332.677° NNW