INMARSAT 6-F1, 50319
Orbit data source: Space-Track
INMARSAT 6-F1, 50319 is a payload satellite owned by INMARSAT-Ltd (UK) in GEO that was launched on Wed, 22 Dec 2021 UTC via an H-IIA 204 launch vehicle from the Tanegashima Space Center (TNSTA). 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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Identifier
Orbit
Country
IMRelated business
Manufacturer
Airbus (UK)
Mission
Operational Commercial Communications
Bus & Motor
EUROSTAR 3000EOR, SPT140D
Mass
5,470 kg wet, 4,000 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Dish + 2 Pan, 23.5 m
Radar Cross Section
55.453 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 4 days ago
TLE from 4 days ago
0 INMARSAT 6-F1
1 50319U 21128A 26169.84022277 -.00000178 00000-0 00000-0 0 9995
2 50319 0.0186 327.5438 0000303 244.7765 80.9907 1.00270212 16272Epoch: 2026-06-18T20:09Z
TLE epoch observation values (Epoch: 2026-06-18T20:09:55.247Z)
Latitude
-0.02707°
Longitude
83.76874°
Altitude
35,786.326 km
Speed
3.075 km/s
True Right ascension
19h 33m 18s
True Declination
0° 01' 37"
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
21:40:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,789.384 km
Perigee altitude
35,786.829 km
Semi-major axis
42,166.243 km
Eccentricity
0.00003
Inclination
0.0186°
RAAN
327.5438°
Arg. of periapsis
244.7765°
True anomaly
80.99413°
Mean anomaly
80.9907°
Eccentric anomaly
80.99241°
Mean motion
0.25067 °/min
Orbital period
1,436.17 mins
BSTAR
0
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Other satellites on launch #128 in the year 2021 (2021-12-22 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 6-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 6-F1 is likely not visible in the next few days. |
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50319 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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