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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Edit Public Description
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: 5 hours ago
TLE from 5 hours ago
0 INMARSAT 6-F2
1 55683U 23022A 25291.25764258 -.00000318 00000-0 00000-0 0 9997
2 55683 4.9129 34.6734 3070701 212.4806 182.0509 1.00956833 8112Epoch: 2025-10-18T06:11Z
TLE epoch observation values (Epoch: 2025-10-18T06:11:00.318Z)
Latitude
2.70431°
Longitude
-51.64797°
Altitude
48,471.823 km
Speed
2.245 km/s
True Right ascension
04h 32m 22s
True Declination
2° 42' 08"
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
06:05:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
48,486.136 km
Perigee altitude
22,707.599 km
Semi-major axis
41,975.005 km
Eccentricity
0.30707
Inclination
4.9129°
RAAN
34.6734°
Arg. of periapsis
212.4806°
True anomaly
181.14253°
Mean anomaly
182.0509°
Eccentric anomaly
181.56913°
Mean motion
0.25238 °/min
Orbital period
1,426.41 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. |
|---|---|---|---|---|---|---|---|
| 403 mins | 2025-10-18 11:16:44.447Z | 141.636° SSE | 2025-10-18 12:44:44.447Z | 147.131° SSE | 34.975° | 2025-10-18 17:59:44.447Z | 114.803° SE |
| 439 mins | 2025-10-19 03:57:44.447Z | 102.773° ESE | 2025-10-19 11:16:44.447Z | 139.529° SSE | 33.853° | 2025-10-19 11:16:44.447Z | 139.529° SSE |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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