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IRIDIUM 121, 42812

Orbit data source: Space-Track

IRIDIUM 121, 42812 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/42812?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/42812?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

42812, 2017-039K

Orbit

LEO

Last TLE update

8 hours ago

Origin

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 (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, 9.4 m

Radar Cross Section

14.423 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 8 hours ago

0 IRIDIUM 121
1 42812U 17039K   25128.92887373  .00000109  00000-0  31965-4 0  9990
2 42812  86.3994 162.6438 0002491  91.3611 268.7870 14.34216395411883

Epoch: 2025-05-08T22:17Z

Definitive object data (Epoch: 2025-05-08T22:17:34.69Z)

Latitude

-0.00003°

Longitude

-38.74307°

Altitude

780.761 km

Speed

7.463 km/s

True Right ascension

10h 50m 34s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

21.71142°

Longitude

-37.46243°

Altitude

779.805 km

Speed

7.466 km/s

Apparent Right ascension

07h 54m 27s

Apparent Declination

-13° 34' 25"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

14:54:50

Azimuth

268.927° W

Elevation

-20.166°

Doppler factor

Orbital elements

Apogee altitude

776.418 km

Perigee altitude

772.854 km

Semi-major axis

7,152.773 km

Eccentricity

0.0002491

Inclination

86.3994°

RAAN

162.6438°

Arg. of periapsis

91.3611°

True anomaly

268.75846°

Mean anomaly

268.787°

Eccentric anomaly

268.77273°

Mean motion

3.58783 °/min

BSTAR

0.000031965

Orbital period

100.34 mins

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

IRIDIUM 121 Visibility forecast

Observer location: undefined°, undefined°

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	2025-05-09 13:55:56.801Z	9.436° NNE	2025-05-09 14:00:56.801Z	93.764° ESE	37.187°	2025-05-09 14:04:56.801Z	156.537° SSE
5 mins	2025-05-09 15:38:56.801Z	307.621° NW	2025-05-09 15:40:56.801Z	280.629° WNW	16.912°	2025-05-09 15:43:56.801Z	243.002° WSW
8 mins	2025-05-10 02:52:56.801Z	189.052° SSW	2025-05-10 02:56:56.801Z	305.876° NW	43.743°	2025-05-10 03:00:56.801Z	357.965° N

Authenticating...

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Check out IRIDIUM 121, 42812 on other resources

View IRIDIUM 121, 42812 on NASA - NSSDCA Website

View IRIDIUM 121, 42812 on Heavens-Above

View IRIDIUM 121, 42812 on Keep Track

View IRIDIUM 121, 42812 on Celestrak

View IRIDIUM 121, 42812 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.