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IRIDIUM 156, 43576

Orbit data source: Space-Track

IRIDIUM 156, 43576 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/43576?theme=dark&initialShowStats=false

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Identifier

43576, 2018-061H

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 156
1 43576U 18061H   26046.23183424  .00000053  00000-0  11849-4 0  9991
2 43576  86.3950 107.7466 0002081  91.0083 269.1351 14.34217875395894

Epoch: 2026-02-15T05:33Z

TLE epoch observation values (Epoch: 2026-02-15T05:33:50.478Z)

Latitude

-0.00004°

Longitude

-120.95722°

Altitude

780.74 km

Speed

7.463 km/s

True Right ascension

07h 10m 59s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

19:28:27

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.12 km

Perigee altitude

773.143 km

Semi-major axis

7,152.768 km

Eccentricity

0.00021

Inclination

86.395°

RAAN

107.7466°

Arg. of periapsis

91.0083°

True anomaly

269.11126°

Mean anomaly

269.1351°

Eccentric anomaly

269.12318°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

0.000011849

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

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IRIDIUM 156 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.
6 mins	2026-02-16 03:28:07.057Z	122.928° SE	2026-02-16 03:31:07.057Z	83.379° E	19.695°	2026-02-16 03:34:07.057Z	41.83° NE
8 mins	2026-02-16 05:08:07.057Z	213.957° SW	2026-02-16 05:12:07.057Z	291.52° WNW	33.083°	2026-02-16 05:16:07.057Z	346.065° N
8 mins	2026-02-16 15:38:07.057Z	13.58° NNE	2026-02-16 15:42:07.057Z	84.771° E	36.578°	2026-02-16 15:46:07.057Z	154.163° 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 156, 43576 on other resources

View IRIDIUM 156, 43576 on NASA - NSSDCA Website

View IRIDIUM 156, 43576 on Heavens-Above

View IRIDIUM 156, 43576 on Keep Track

View IRIDIUM 156, 43576 on Celestrak

View IRIDIUM 156, 43576 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 156, 43576

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: 2026-02-15T05:33:50.478Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

IRIDIUM 156 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDIUM 156, 43576 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 11 hours ago