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MUOS 3, 40374

Orbit data source: Space-Track

MUOS 3, 40374 is a payload satellite owned by SPAWAR Pacific (US) in GEO that was launched on Wed, 21 Jan 2015 UTC via an ATLAS V 551 launch vehicle from the Air Force Eastern Test Range (AFETR). 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.

Not visible in the next 10 days

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/40374?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/40374?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

40374, 2015-002A

Orbit

GEO

Last TLE update

10 hours ago

Origin

United States Navy (US)

Manufacturer

LMSS/LMCSS

Mission

Operational Defense Communications

Bus & Motor

A2100, BT-4

Mass

6,800 kg wet, 3,800 kg dry

Launch date (UTC)

2015-01-21 (10 years ago)

Launch vehicle

ATLAS V 551

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan + 1 Dish, 28.7 m

Radar Cross Section

71.298 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 10 hours ago

0 MUOS 3
1 40374U 15002A   25191.77278009 -.00000118  00000-0  00000-0 0  9995
2 40374   3.8808  41.1126 0054766 177.1483 333.4020  1.00271125 38163

Epoch: 2025-07-10T18:32Z

TLE epoch observation values (Epoch: 2025-07-10T18:32:48.199Z)

Latitude

1.93629°

Longitude

-15.69395°

Altitude

35,581.041 km

Speed

3.09 km/s

True Right ascension

12h 45m 45s

True Declination

1° 56' 04"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-3.07038°

Longitude

142.26603°

Altitude

35,936.484 km

Speed

3.064 km/s

Apparent Right ascension

23h 44m 02s

Apparent Declination

-8° 28' 04"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

17:16:51

Azimuth

92.206° ESE

Elevation

-10.618°

Doppler factor

Orbital elements

Apogee altitude

36,018.769 km

Perigee altitude

35,556.917 km

Semi-major axis

42,165.98 km

Eccentricity

0.00548

Inclination

3.8808°

RAAN

41.1126°

Arg. of periapsis

177.1483°

True anomaly

Unknown

Mean anomaly

333.402°

Eccentric anomaly

Unknown

Mean motion

0.25067 °/min

Orbital period

1,436.16 mins

BSTAR

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40374 neighbors

Authenticating...

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Other satellites on launch #2 in the year 2015 (2015-01-21 UTC)

ATLAS 5 CENTAUR R/B, 40375

MUOS 3 Visibility

Observer location: undefined°, undefined°

MUOS 3 is likely not visible in the next few days

Authenticating...

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Check out MUOS 3, 40374 on other resources

View MUOS 3, 40374 on NASA - NSSDCA Website

View MUOS 3, 40374 on Heavens-Above

View MUOS 3, 40374 on Keep Track

View MUOS 3, 40374 on Celestrak

View MUOS 3, 40374 on Gunter's Space Page

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