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IRIDIUM 139, 42963

Orbit data source: Space-Track

IRIDIUM 139, 42963 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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Iframe URL

https://www.satcat.com/sats-embedded/42963?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

42963, 2017-061J

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)

2017-10-09 (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 139
1 42963U 17061J   25181.90563341  .00000016  00000-0 -13089-5 0  9991
2 42963  86.3997 172.1218 0002358  81.3589 278.7874 14.34217731404499

Epoch: 2025-06-30T21:44Z

TLE epoch observation values (Epoch: 2025-06-30T21:44:06.726Z)

Latitude

-0.00002°

Longitude

-73.11496°

Altitude

780.461 km

Speed

7.464 km/s

True Right ascension

11h 28m 29s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-16.86041°

Longitude

-74.34611°

Altitude

784.61 km

Speed

7.46 km/s

Apparent Right ascension

09h 06m 50s

Apparent Declination

-35° 12' 00"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

17:39:28

Azimuth

259.58° W

Elevation

-49.209°

Doppler factor

Orbital elements

Apogee altitude

776.318 km

Perigee altitude

772.945 km

Semi-major axis

7,152.769 km

Eccentricity

0.00024

Inclination

86.3997°

RAAN

172.1218°

Arg. of periapsis

81.3589°

True anomaly

Unknown

Mean anomaly

278.7874°

Eccentric anomaly

Unknown

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

-0.0000013089

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

IRIDIUM 139 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	2025-07-01 11:42:45.397Z	351.971° N	2025-07-01 11:46:45.397Z	282.128° WNW	43.615°	2025-07-01 11:51:45.397Z	186.793° SSW
6 mins	2025-07-01 22:59:45.397Z	124.188° SE	2025-07-01 23:02:45.397Z	75.641° E	23.595°	2025-07-01 23:05:45.397Z	34.058° NE
7 mins	2025-07-02 00:39:45.397Z	225.194° WSW	2025-07-02 00:42:45.397Z	274.744° WNW	28.667°	2025-07-02 00:46:45.397Z	337.981° N

Authenticating...

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Check out IRIDIUM 139, 42963 on other resources

View IRIDIUM 139, 42963 on NASA - NSSDCA Website

View IRIDIUM 139, 42963 on Heavens-Above

View IRIDIUM 139, 42963 on Keep Track

View IRIDIUM 139, 42963 on Celestrak

View IRIDIUM 139, 42963 on Gunter's Space Page

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