FOSSASAT2E21, 64536
Orbit data source: Space-Track
FOSSASAT2E21, 64536 is a payload satellite owned by WiseKey (ES) in SSO that was launched on Mon, 23 Jun 2025 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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64536 intel report (Beta)
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Identifier
Orbit
Country
ES / SPNRelated business
Manufacturer
Fossa Systems
Mission
Operational Commercial Communications
Bus & Motor
CUBESAT 3U, Unknown motor
Mass
4 kg wet, 4 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 0.2 m
Radar Cross Section
0.035 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 FOSSASAT2E21
1 64536U 25135J 26221.86118907 .00001423 00000-0 68819-4 0 9999
2 64536 97.4686 335.6353 0004373 20.9068 339.2345 15.20224153 62974Epoch: 2026-08-09T20:40Z
TLE epoch observation values (Epoch: 2026-08-09T20:40:06.735Z)
Latitude
-0.00005°
Longitude
67.25513°
Altitude
505.438 km
Speed
7.613 km/s
True Right ascension
22h 22m 32s
True Declination
0° 00' 00"
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
15:31:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
505.141 km
Perigee altitude
499.123 km
Semi-major axis
6,880.269 km
Eccentricity
0.00044
Inclination
97.4686°
RAAN
335.6353°
Arg. of periapsis
20.9068°
True anomaly
339.21672°
Mean anomaly
339.2345°
Eccentric anomaly
339.22561°
Mean motion
3.80308 °/min
Orbital period
94.66 mins
BSTAR
0.000068819
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Other satellites on launch #135 in the year 2025 (2025-06-23 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.FOSSASAT2E21 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-08-10 07:50:35.851Z | 176.067° S | 2026-08-10 07:53:35.851Z | 213.831° SW | 40.338° | 2026-08-10 07:57:35.851Z | 342.037° N |
| 5 mins | 2026-08-10 20:56:35.851Z | 341.998° N | 2026-08-10 20:58:35.851Z | 271.417° WNW | 33.508° | 2026-08-10 21:01:35.851Z | 215.717° SW |
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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