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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 src="https://www.satcat.com/sats-embedded/42804?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/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: 7 hours ago

TLE from 7 hours ago

0 IRIDIUM 123
1 42804U 17039B   26266.58568323 -.00000009  00000-0 -10340-4 0  9993
2 42804  86.3964 312.5273 0002062  90.4084 269.7348 14.34217144484055

Epoch: 2026-09-23T14:03Z

TLE epoch observation values (Epoch: 2026-09-23T14:03:23.031Z)

Latitude

-0.00001°

Longitude

99.24665°

Altitude

780.727 km

Speed

7.463 km/s

True Right ascension

20h 50m 06s

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

14:33:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.109 km

Perigee altitude

773.159 km

Semi-major axis

7,152.771 km

Eccentricity

0.00021

Inclination

86.3964°

RAAN

312.5273°

Arg. of periapsis

90.4084°

True anomaly

269.71117°

Mean anomaly

269.7348°

Eccentric anomaly

269.72299°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

-0.00001034

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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.
10 mins	2026-09-24 03:33:16.460Z	172.222° S	2026-09-24 03:38:16.460Z	84.528° E	70.452°	2026-09-24 03:43:16.460Z	7.384° NNE
5 mins	2026-09-24 14:06:16.460Z	47.059° ENE	2026-09-24 14:08:16.460Z	73.958° E	18.015°	2026-09-24 14:11:16.460Z	112.684° SE
8 mins	2026-09-24 15:46:16.460Z	338.037° N	2026-09-24 15:49:16.460Z	278.351° WNW	49.624°	2026-09-24 15:54:16.460Z	199.19° SSW

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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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-09-23T14:03:23.031Z)

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: 7 hours ago