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IRIDIUM 166, 43570

Orbit data source: Space-Track

IRIDIUM 166, 43570 is a payload satellite owned by Iridium (US) in LEO that was launched on Wed, 25 Jul 2018 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/43570?theme=dark&initialShowStats=false

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Identifier

43570, 2018-061B

Orbit

LEO

Country

Related business

Iridium Communications Inc. (US)

Manufacturer

NGIS SSG Gilbert

Mission

Operational Commercial Communications

Bus & Motor

ELITEBUS, Unknown motor

Mass

860 kg wet, 700 kg dry

Launch date (UTC)

2018-07-25 (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: 10 hours ago

TLE from 10 hours ago

0 IRIDIUM 166
1 43570U 18061B   26128.24789434  .00000155  00000-0  48345-4 0  9994
2 43570  86.3954  73.4440 0002286  82.0026 278.1429 14.34222425407670

Epoch: 2026-05-08T05:56Z

TLE epoch observation values (Epoch: 2026-05-08T05:56:58.070Z)

Latitude

-0.00007°

Longitude

118.11963°

Altitude

780.471 km

Speed

7.464 km/s

True Right ascension

04h 53m 46s

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

23:38:13

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.251 km

Perigee altitude

772.981 km

Semi-major axis

7,152.753 km

Eccentricity

0.00023

Inclination

86.3954°

RAAN

73.444°

Arg. of periapsis

82.0026°

True anomaly

278.11697°

Mean anomaly

278.1429°

Eccentric anomaly

278.12993°

Mean motion

3.58784 °/min

Orbital period

100.34 mins

BSTAR

0.000048345

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Other satellites on launch #61 in the year 2018 (2018-07-25 UTC)

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IRIDIUM 166 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	2026-05-08 21:08:47.508Z	195.046° SSW	2026-05-08 21:12:47.508Z	305.669° NW	41.706°	2026-05-08 21:16:47.508Z	355.415° N
7 mins	2026-05-09 07:39:47.508Z	31.281° NE	2026-05-09 07:42:47.508Z	81.881° E	26.93°	2026-05-09 07:46:47.508Z	138.833° SSE
6 mins	2026-05-09 09:20:47.508Z	319.208° NNW	2026-05-09 09:23:47.508Z	267.176° W	25.154°	2026-05-09 09:26:47.508Z	225.242° WSW

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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 166, 43570 on other resources

View IRIDIUM 166, 43570 on NASA - NSSDCA Website

View IRIDIUM 166, 43570 on Heavens-Above

View IRIDIUM 166, 43570 on Keep Track

View IRIDIUM 166, 43570 on Celestrak

View IRIDIUM 166, 43570 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 166, 43570

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-05-08T05:56:58.070Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #61 in the year 2018 (2018-07-25 UTC)

IRIDIUM 166 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDIUM 166, 43570 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago