ALPHASAT (I-4A F4), 39215
Orbit data source: Space-Track
ALPHASAT (I-4A F4), 39215 is a UK payload satellite in GEO that was launched on Thu, 25 Jul 2013 UTC via an ARIANE 5ECA 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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Identifier
Orbit
Country
IMRelated business
Manufacturer
Astrium/Toulouse
Mission
Operational Commercial Communications
Bus & Motor
ALPHABUS, S400
Mass
6,650 kg wet, ~3,500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan + 1 Dish, 20.0 m
Radar Cross Section
46.013 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 ALPHASAT (I-4A F4)
1 39215U 13038A 26192.56981963 .00000138 00000-0 00000-0 0 9994
2 39215 2.9995 1.2185 0002133 138.2180 20.0372 1.00274146 44260Epoch: 2026-07-11T13:40Z
TLE epoch observation values (Epoch: 2026-07-11T13:40:32.416Z)
Latitude
1.12661°
Longitude
24.89801°
Altitude
35,776.841 km
Speed
3.075 km/s
True Right ascension
10h 38m 03s
True Declination
1° 07' 32"
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
13:03:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,795.993 km
Perigee altitude
35,778.005 km
Semi-major axis
42,165.136 km
Eccentricity
0.00021
Inclination
2.9995°
RAAN
1.2185°
Arg. of periapsis
138.218°
True anomaly
20.04558°
Mean anomaly
20.0372°
Eccentric anomaly
20.04139°
Mean motion
0.25068 °/min
Orbital period
1,436.12 mins
BSTAR
0
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Other satellites on launch #38 in the year 2013 (2013-07-25 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.ALPHASAT (I-4A 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. |
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| ALPHASAT (I-4A F4) is likely not visible in the next few days. |
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39215 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
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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