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, 0.1 m
Radar Cross Section
0.035 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 FOSSASAT2E21
1 64536U 25135J 26150.83165439 .00003529 00000-0 16770-3 0 9996
2 64536 97.4634 265.3436 0002880 230.9449 129.1530 15.19865428 52183Epoch: 2026-05-30T19:57Z
TLE epoch observation values (Epoch: 2026-05-30T19:57:34.939Z)
Latitude
-0°
Longitude
77.60599°
Altitude
510.588 km
Speed
7.608 km/s
True Right ascension
17h 41m 22s
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
12:24:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
505.197 km
Perigee altitude
501.234 km
Semi-major axis
6,881.352 km
Eccentricity
0.00029
Inclination
97.4634°
RAAN
265.3436°
Arg. of periapsis
230.9449°
True anomaly
129.17859°
Mean anomaly
129.153°
Eccentric anomaly
129.16579°
Mean motion
3.80218 °/min
Orbital period
94.68 mins
BSTAR
0.0001677
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-05-31 07:09:04.322Z | 136.591° SSE | 2026-05-31 07:12:04.322Z | 78.1° E | 29.14° | 2026-05-31 07:15:04.322Z | 10.634° NNE |
| 6 mins | 2026-05-31 20:14:04.322Z | 27.767° NE | 2026-05-31 20:17:04.322Z | 129.311° SE | 36.587° | 2026-05-31 20:20:04.322Z | 176.982° S |
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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