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IRIDIUM 100, 42956

Orbit data source: Space-Track

IRIDIUM 100, 42956 is a payload satellite owned by Iridium (US) in LEO that was launched on Mon, 09 Oct 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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https://www.satcat.com/sats-embedded/42956?theme=dark&initialShowStats=false

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Identifier

42956, 2017-061B

Orbit

LEO

Country

Related business

Iridium Communications Inc. (US)

Manufacturer

OATK SSG Gilbert

Mission

Operational Commercial Communications

Bus & Motor

ELITEBUS, Unknown motor

Mass

860 kg wet, 700 kg dry

Launch date (UTC)

2017-10-09 (9 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: 5 hours ago

TLE from 5 hours ago

0 IRIDIUM 100
1 42956U 17061B   26141.79225350 -.00000006  00000-0 -91626-5 0  9995
2 42956  86.3988  36.2192 0002089  83.3570 276.7864 14.34217514450997

Epoch: 2026-05-21T19:00Z

TLE epoch observation values (Epoch: 2026-05-21T19:00:50.702Z)

Latitude

0.00003°

Longitude

-128.42443°

Altitude

780.543 km

Speed

7.464 km/s

True Right ascension

02h 24m 52s

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

09:25:02

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.127 km

Perigee altitude

773.138 km

Semi-major axis

7,152.769 km

Eccentricity

0.00021

Inclination

86.3988°

RAAN

36.2192°

Arg. of periapsis

83.357°

True anomaly

276.76263°

Mean anomaly

276.7864°

Eccentric anomaly

276.77451°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

-0.0000091626

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Other satellites on launch #61 in the year 2017 (2017-10-09 UTC)

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IRIDIUM 100 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	2026-05-22 03:58:53.152Z	39.267° NE	2026-05-22 04:01:53.152Z	79.501° E	18.081°	2026-05-22 04:04:53.152Z	117.544° SE
8 mins	2026-05-22 05:38:53.152Z	340.088° N	2026-05-22 05:42:53.152Z	264.506° W	35.749°	2026-05-22 05:46:53.152Z	203.709° SW
7 mins	2026-05-22 16:54:53.152Z	144.399° SSE	2026-05-22 16:57:53.152Z	91.649° ESE	32.499°	2026-05-22 17:01:53.152Z	23.047° NE
6 mins	2026-05-22 18:36:53.152Z	250.997° W	2026-05-22 18:38:53.152Z	281.502° WNW	20.59°	2026-05-22 18:42:53.152Z	332.592° NNW

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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 100, 42956 on other resources

View IRIDIUM 100, 42956 on NASA - NSSDCA Website

View IRIDIUM 100, 42956 on Heavens-Above

View IRIDIUM 100, 42956 on Keep Track

View IRIDIUM 100, 42956 on Celestrak

View IRIDIUM 100, 42956 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 100, 42956

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-05-21T19:00:50.702Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #61 in the year 2017 (2017-10-09 UTC)

IRIDIUM 100 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDIUM 100, 42956 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 5 hours ago