INMARSAT 6-F2, 55683
Orbit data source: Space-Track
INMARSAT 6-F2, 55683 is a payload satellite owned by INMARSAT-Ltd (UK) in HEO that was launched on Sat, 18 Feb 2023 UTC via an FALCON 9 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.
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55683 intel report (Beta)
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Identifier
Orbit
Country
IMRelated business
Manufacturer
Airbus (UK)
Mission
Non-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: 2 days ago
TLE from 2 days ago
0 INMARSAT 6-F2
1 55683U 23022A 26171.35608845 -.00000023 00000-0 00000+0 0 9997
2 55683 5.5397 36.5323 3074903 215.3192 339.1872 1.00953994 10586Epoch: 2026-06-20T08:32Z
TLE epoch observation values (Epoch: 2026-06-20T08:32:46.042Z)
Latitude
0.44421°
Longitude
175.159°
Altitude
24,349.421 km
Speed
4.056 km/s
True Right ascension
14h 07m 41s
True Declination
0° 26' 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
21:40:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
48,504.799 km
Perigee altitude
22,690.504 km
Semi-major axis
41,975.788 km
Eccentricity
0.30749
Inclination
5.5397°
RAAN
36.5323°
Arg. of periapsis
215.3192°
True anomaly
320.24459°
Mean anomaly
339.1872°
Eccentric anomaly
330.51602°
Mean motion
0.25237 °/min
Orbital period
1,426.45 mins
BSTAR
0
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Other satellites on launch #22 in the year 2023 (2023-02-18 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-F2 Visibility forecast
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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. |
|---|---|---|---|---|---|---|---|
| 805 mins | 2026-06-22 10:38:04.786Z | 228.077° WSW | 2026-06-22 15:44:04.786Z | 211.951° SW | 31.257° | 2026-06-23 00:03:04.786Z | 261.811° W |
| 98 mins | 2026-06-23 09:00:04.786Z | 245.391° WSW | 2026-06-23 10:38:04.786Z | 222.708° SW | 22.195° | 2026-06-23 10:38:04.786Z | 222.708° SW |
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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