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IRIDIUM 123, 42804

Orbit data source: Space-Track

IRIDIUM 123, 42804 is a payload satellite owned by Iridium (US) in LEO that was launched on Sun, 25 Jun 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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Iframe URL

https://www.satcat.com/sats-embedded/42804?theme=dark&initialShowStats=false

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Identifier

42804, 2017-039B

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)

2017-06-25 (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 123
1 42804U 17039B   26262.88795063  .00000053  00000-0  11740-4 0  9997
2 42804  86.3973 314.0733 0002237  90.5503 269.5949 14.34217779483524

Epoch: 2026-09-19T21:18Z

TLE epoch observation values (Epoch: 2026-09-19T21:18:38.934Z)

Latitude

-0.00003°

Longitude

-4.37896°

Altitude

780.73 km

Speed

7.463 km/s

True Right ascension

20h 56m 17s

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

19:03:50

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.232 km

Perigee altitude

773.031 km

Semi-major axis

7,152.769 km

Eccentricity

0.00022

Inclination

86.3973°

RAAN

314.0733°

Arg. of periapsis

90.5503°

True anomaly

269.56927°

Mean anomaly

269.5949°

Eccentric anomaly

269.58208°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

0.00001174

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Other satellites on launch #39 in the year 2017 (2017-06-25 UTC)

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IRIDIUM 123 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.
9 mins	2026-09-20 04:07:21.462Z	180.665° SSW	2026-09-20 04:11:21.462Z	177.039° S	81.358°	2026-09-20 04:16:21.462Z	2.642° NNE
6 mins	2026-09-20 14:39:21.462Z	39.703° NE	2026-09-20 14:42:21.462Z	84.879° E	22.536°	2026-09-20 14:45:21.462Z	124.207° SE
8 mins	2026-09-20 16:19:21.462Z	333.82° NNW	2026-09-20 16:22:21.462Z	286.171° WNW	38.164°	2026-09-20 16:27:21.462Z	208.169° SW

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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 123, 42804 on other resources

View IRIDIUM 123, 42804 on NASA - NSSDCA Website

View IRIDIUM 123, 42804 on Heavens-Above

View IRIDIUM 123, 42804 on Keep Track

View IRIDIUM 123, 42804 on Celestrak

View IRIDIUM 123, 42804 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 123, 42804

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: 2026-09-19T21:18:38.934Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #39 in the year 2017 (2017-06-25 UTC)

IRIDIUM 123 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDIUM 123, 42804 on other resources

Documentation

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