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: 15 hours ago
TLE from 15 hours ago
0 FOSSASAT2E21
1 64536U 25135J 26207.57759803 .00003135 00000-0 14807-3 0 9996
2 64536 97.4675 321.4938 0005434 61.7342 298.4440 15.20156799 60803Epoch: 2026-07-26T13:51Z
TLE epoch observation values (Epoch: 2026-07-26T13:51:44.469Z)
Latitude
-0.00014°
Longitude
169.28501°
Altitude
506.676 km
Speed
7.612 km/s
True Right ascension
21h 25m 58s
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
18:21:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
506.074 km
Perigee altitude
498.597 km
Semi-major axis
6,880.472 km
Eccentricity
0.00054
Inclination
97.4675°
RAAN
321.4938°
Arg. of periapsis
61.7342°
True anomaly
298.38923°
Mean anomaly
298.444°
Eccentric anomaly
298.41662°
Mean motion
3.80291 °/min
Orbital period
94.66 mins
BSTAR
0.00014807
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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 | 2026-07-27 07:22:39.745Z | 144.141° SSE | 2026-07-27 07:25:39.745Z | 48.642° ENE | 35.511° | 2026-07-27 07:28:39.745Z | 359.825° N |
| 5 mins | 2026-07-27 20:27:39.745Z | 19.287° NNE | 2026-07-27 20:29:39.745Z | 140.134° SSE | 43.848° | 2026-07-27 20:32:39.745Z | 187.865° SSW |
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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