INMARSAT 3-F4, 24819
Orbit data source: Space-Track
INMARSAT 3-F4, 24819 is a payload satellite owned by INMARSAT (UK) in GEO that was launched on Tue, 03 Jun 1997 UTC via an ARIANE 44L launch vehicle from the French Guiana (FRGUI). 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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24819 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
IMRelated business
Manufacturer
LMT/EW
Mission
Non-operational Civil Communications
Bus & Motor
AS4000, STAR 37FM
Mass
1,999 kg wet, 813 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Hex Poly + 2 Pan, 10.3 m
Radar Cross Section
67.817 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 INMARSAT 3-F4
1 24819U 97027A 25253.32356478 -.00000174 00000-0 00000-0 0 9997
2 24819 11.0110 39.9504 0010026 76.2853 91.3744 0.99495206103275Epoch: 2025-09-10T07:45Z
TLE epoch observation values (Epoch: 2025-09-10T07:45:55.996Z)
Latitude
2.33012°
Longitude
101.84114°
Altitude
36,005.793 km
Speed
3.067 km/s
True Right ascension
13h 51m 42s
True Declination
2° 19' 40"
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
15:02:13
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,049.216 km
Perigee altitude
35,964.226 km
Semi-major axis
42,384.858 km
Eccentricity
0.001
Inclination
11.011°
RAAN
39.9504°
Arg. of periapsis
76.2853°
True anomaly
91.48925°
Mean anomaly
91.3744°
Eccentric anomaly
91.43183°
Mean motion
0.24873 °/min
Orbital period
1,447.36 mins
BSTAR
0
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Other satellites on launch #27 in the year 1997 (1997-06-03 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 3-F4 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. |
|---|---|---|---|---|---|---|---|
| INMARSAT 3-F4 is likely not visible in the next few days. |
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24819 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 ascending 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 ascending order |
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