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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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Identifier
43071, 2017-083B
Orbit
LEO
Last TLE update
11 hours ago
Origin
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, 9.4 m
Radar Cross Section
14.423 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 11 hours ago
0 IRIDIUM 138
1 43071U 17083B   25191.52050134  .00000014  00000-0 -21697-5 0  9998
2 43071  86.3956 104.5364 0002654  83.1133 277.0364 14.34217526395161
Epoch: 2025-07-10T12:29Z
TLE epoch observation values (Epoch: 2025-07-10T12:29:31.315Z)
Latitude
-0.00011°
Longitude
-11.52969°
Altitude
780.487 km
Speed
7.464 km/s
True Right ascension
06h 58m 08s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-50.01548°
Longitude
172.56143°
Altitude
798.775 km
Speed
7.452 km/s
Apparent Right ascension
21h 38m 10s
Apparent Declination
-50° 40' 13"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
11:52:31
Azimuth
125.974° SE
Elevation
-64.326°
Doppler factor
1
Orbital elements
Apogee altitude
776.531 km
Perigee altitude
772.734 km
Semi-major axis
7,152.769 km
Eccentricity
0.00027
Inclination
86.3956°
RAAN
104.5364°
Arg. of periapsis
83.1133°
True anomaly
Unknown
Mean anomaly
277.0364°
Eccentric anomaly
Unknown
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
-0.0000021697
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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.
9 mins2025-07-11 05:48:26.076Z13.197° NNE2025-07-11 05:53:26.076Z94.176° ESE33.247°2025-07-11 05:57:26.076Z150.957° SSE
5 mins2025-07-11 07:31:26.076Z308.86° NW2025-07-11 07:33:26.076Z279.224° WNW19.737°2025-07-11 07:36:26.076Z238.544° WSW
8 mins2025-07-11 18:45:26.076Z181.308° SSW2025-07-11 18:49:26.076Z359.983° N44.322°2025-07-11 18:53:26.076Z2.292° NNE
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