INMARSAT 5-F1, 39476
Orbit data source: Space-Track
INMARSAT 5-F1, 39476 is a payload satellite owned by INMARSAT-Ltd (UK) in GEO that was launched on Sun, 08 Dec 2013 UTC via a PROTON-M/BRIZ-M launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). 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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39476 intel report (Beta)
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Identifier
Orbit
Country
IMRelated business
Manufacturer
Boeing/ES
Mission
Operational Commercial Communications
Bus & Motor
BSS-702HP, R-4D
Mass
6,090 kg wet, ~3,500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 16.9 m
Radar Cross Section
53.751 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 INMARSAT 5-F1
1 39476U 13073A 26071.94419669 .00000028 00000-0 00000+0 0 9996
2 39476 0.0189 145.5062 0000223 292.7976 134.7464 1.00272806 44611Epoch: 2026-03-12T22:39Z
TLE epoch observation values (Epoch: 2026-03-12T22:39:38.594Z)
Latitude
0.03481°
Longitude
62.57292°
Altitude
35,786.454 km
Speed
3.075 km/s
True Right ascension
14h 12m 16s
True Declination
0° 02' 05"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
12:49:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,788.319 km
Perigee altitude
35,786.439 km
Semi-major axis
42,165.516 km
Eccentricity
0.00002
Inclination
0.0189°
RAAN
145.5062°
Arg. of periapsis
292.7976°
True anomaly
134.74821°
Mean anomaly
134.7464°
Eccentric anomaly
134.74731°
Mean motion
0.25067 °/min
Orbital period
1,436.14 mins
BSTAR
0
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Other satellites on launch #73 in the year 2013 (2013-12-08 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.INMARSAT 5-F1 Visibility
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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. |
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| INMARSAT 5-F1 is likely not visible in the next few days. |
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39476 neighbors
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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
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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