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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 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

Last TLE update

18 hours ago

Origin

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 (7 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, 9.4 m

Radar Cross Section

14.423 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 18 hours ago

0 IRIDIUM 138
1 43071U 17083B   25128.51952637  .00000003  00000-0 -61075-5 0  9998
2 43071  86.3936 130.8770 0001709  84.5417 275.5974 14.34217365386130

Epoch: 2025-05-08T12:28Z

Definitive object data (Epoch: 2025-05-08T12:28:07.078Z)

Latitude

0.00001°

Longitude

77.25866°

Altitude

780.6 km

Speed

7.464 km/s

True Right ascension

08h 43m 30s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

-47.27871°

Longitude

73.04874°

Altitude

796.828 km

Speed

7.454 km/s

Apparent Right ascension

05h 37m 18s

Apparent Declination

-52° 09' 38"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

14:48:55

Azimuth

232.669° WSW

Elevation

-58.857°

Doppler factor

Orbital elements

Apogee altitude

775.855 km

Perigee altitude

773.411 km

Semi-major axis

7,152.77 km

Eccentricity

0.0001709

Inclination

86.3936°

RAAN

130.877°

Arg. of periapsis

84.5417°

True anomaly

275.57791°

Mean anomaly

275.5974°

Eccentric anomaly

275.58765°

Mean motion

3.58783 °/min

BSTAR

-0.0000061075

Orbital period

100.34 mins

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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°

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.
4 mins	2025-05-09 10:50:03.624Z	45.507° ENE	2025-05-09 10:52:03.624Z	68.57° E	12.992°	2025-05-09 10:54:03.624Z	93.1° ESE
8 mins	2025-05-09 12:30:03.624Z	348.653° N	2025-05-09 12:34:03.624Z	243.406° WSW	42.017°	2025-05-09 12:38:03.624Z	190.514° SSW
7 mins	2025-05-09 23:46:03.624Z	131.466° SE	2025-05-09 23:49:03.624Z	85.565° E	25.292°	2025-05-09 23:53:03.624Z	28.813° NE
7 mins	2025-05-10 01:27:03.624Z	232.608° WSW	2025-05-10 01:30:03.624Z	285.96° WNW	26.963°	2025-05-10 01:34:03.624Z	339.754° N

Authenticating...

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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.