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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: 11 hours ago

TLE from 11 hours ago

0 IRIDIUM 166
1 43570U 18061B   26123.92225842  .00000234  00000-0  76390-4 0  9991
2 43570  86.3949  75.2526 0002310  82.7091 277.4367 14.34221618407054

Epoch: 2026-05-03T22:08Z

TLE epoch observation values (Epoch: 2026-05-03T22:08:03.127Z)

Latitude

-0.00005°

Longitude

-118.57929°

Altitude

780.492 km

Speed

7.464 km/s

True Right ascension

05h 01m 00s

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

16:55:18

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.271 km

Perigee altitude

772.967 km

Semi-major axis

7,152.756 km

Eccentricity

0.00023

Inclination

86.3949°

RAAN

75.2526°

Arg. of periapsis

82.7091°

True anomaly

277.41045°

Mean anomaly

277.4367°

Eccentric anomaly

277.42358°

Mean motion

3.58784 °/min

Orbital period

100.34 mins

BSTAR

0.00007639

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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.
5 mins	2026-05-04 20:03:42.578Z	104.217° ESE	2026-05-04 20:05:42.578Z	77.254° E	16.361°	2026-05-04 20:08:42.578Z	41.065° NE
8 mins	2026-05-04 21:42:42.578Z	208.404° SW	2026-05-04 21:45:42.578Z	271.915° WNW	38.066°	2026-05-04 21:50:42.578Z	351.751° N
8 mins	2026-05-05 08:12:42.578Z	21.104° NNE	2026-05-05 08:16:42.578Z	95.578° ESE	31.553°	2026-05-05 08:20:42.578Z	149.123° SSE

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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: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2026-05-03T22:08:03.127Z)

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: 11 hours ago