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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
Identifier
40374, 2015-002A
Orbit
GEO
Last TLE update
10 hours ago
Origin
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
1
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
0
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40374 neighbors
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Other satellites on launch #2 in the year 2015 (2015-01-21 UTC)

MUOS 3 Visibility

Observer location: undefined°, undefined°

MUOS 3 is likely not visible in the next few days
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