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: 1 day ago
TLE from 1 day ago
0 FOSSASAT2E21
1 64536U 25135J 26259.11455323 .00002618 00000-0 12342-3 0 9990
2 64536 97.4717 12.5326 0003232 208.9563 151.1494 15.20376925 68631Epoch: 2026-09-16T02:44Z
TLE epoch observation values (Epoch: 2026-09-16T02:44:57.399Z)
Latitude
0.00007°
Longitude
-23.77736°
Altitude
509.741 km
Speed
7.608 km/s
True Right ascension
00h 50m 07s
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
05:41:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.895 km
Perigee altitude
499.447 km
Semi-major axis
6,879.808 km
Eccentricity
0.00032
Inclination
97.4717°
RAAN
12.5326°
Arg. of periapsis
208.9563°
True anomaly
151.16726°
Mean anomaly
151.1494°
Eccentric anomaly
151.15833°
Mean motion
3.80346 °/min
Orbital period
94.65 mins
BSTAR
0.00012342
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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 | 2026-09-17 20:22:16.806Z | 17.595° NNE | 2026-09-17 20:26:16.806Z | 136.96° SSE | 62.122° | 2026-09-17 20:29:16.806Z | 183.693° SSW |
| 4 mins | 2026-09-18 07:02:16.806Z | 104.302° ESE | 2026-09-18 07:03:16.806Z | 80.417° E | 25.244° | 2026-09-18 07:06:16.806Z | 18.095° NNE |
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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