Showing default

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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/43576?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/43576?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

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: 2 days ago

TLE from 2 days ago

0 IRIDIUM 156
1 43576U 18061H   26171.39656089  .00000206  00000-0  66320-4 0  9993
2 43576  86.3959  55.3875 0002040  83.6900 276.4528 14.34216473413830

Epoch: 2026-06-20T09:31Z

TLE epoch observation values (Epoch: 2026-06-20T09:31:02.860Z)

Latitude

-0.00006°

Longitude

4.0138°

Altitude

780.559 km

Speed

7.464 km/s

True Right ascension

03h 41m 32s

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

00:50:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.095 km

Perigee altitude

773.177 km

Semi-major axis

7,152.773 km

Eccentricity

0.0002

Inclination

86.3959°

RAAN

55.3875°

Arg. of periapsis

83.69°

True anomaly

276.42957°

Mean anomaly

276.4528°

Eccentric anomaly

276.44119°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

0.00006632

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

IRIDIUM 156 Visibility forecast

Loading observer location...
Set Observer location

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 mins	2026-06-22 16:53:41.585Z	191.163° SSW	2026-06-22 16:57:41.585Z	281.906° WNW	43.417°	2026-06-22 17:02:41.585Z	357.953° N
7 mins	2026-06-23 03:24:41.585Z	29.017° NE	2026-06-23 03:27:41.585Z	73.84° E	25.53°	2026-06-23 03:31:41.585Z	134.176° SE
7 mins	2026-06-23 05:05:41.585Z	324.622° NNW	2026-06-23 05:08:41.585Z	274.911° WNW	26.766°	2026-06-23 05:12:41.585Z	218.883° SW

Items per page:

1–3 of 3 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T09:31:02.860Z)

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: 2 days ago