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FOSSASAT2E23, 66788

Orbit data source: Space-Track

FOSSASAT2E23, 66788 is a Spanish payload satellite in SSO that was launched on Fri, 28 Nov 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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Iframe URL

https://www.satcat.com/sats-embedded/66788?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66788, 2025-276EC

Orbit

SSO

Country

ES / SPN

Related business

WISeKey International Holding Ltd (CH)

Manufacturer

Fossa Systems

Mission

Operational Commercial Communications

Bus & Motor

CUBESAT 3U, Unknown motor

Mass

4 kg wet, 4 kg dry

Launch date (UTC)

2025-11-28 (9 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 14.5 m

Radar Cross Section

0.035 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 5 hours ago

TLE from 5 hours ago

0 FOSSASAT2E23
1 66788U 25276EC  26238.95135255  .00008267  00000-0  35788-3 0  9990
2 66788  97.4199 311.7586 0004428 221.8333 138.2566 15.22663315 41197

Epoch: 2026-08-26T22:49Z

TLE epoch observation values (Epoch: 2026-08-26T22:49:56.860Z)

Latitude

0.00003°

Longitude

-5.9253°

Altitude

503.177 km

Speed

7.611 km/s

True Right ascension

20h 47m 02s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

19:05:12

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

497.817 km

Perigee altitude

491.731 km

Semi-major axis

6,872.911 km

Eccentricity

0.00044

Inclination

97.4199°

RAAN

311.7586°

Arg. of periapsis

221.8333°

True anomaly

138.29037°

Mean anomaly

138.2566°

Eccentric anomaly

138.27349°

Mean motion

3.80919 °/min

Orbital period

94.51 mins

BSTAR

0.00035788

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Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

OBJECT CJ, 66746

BRO-17, 66672

OBJECT H, 66673

LEMUR-2-DEANANDMAEVE, 66680

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FOSSASAT2E23 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	2026-08-27 05:16:05.382Z	186.499° SSW	2026-08-27 05:19:05.382Z	273.991° WNW	37.718°	2026-08-27 05:22:05.382Z	336.136° NNW
5 mins	2026-08-27 18:20:05.382Z	337.244° NNW	2026-08-27 18:22:05.382Z	277.64° WNW	29.21°	2026-08-27 18:25:05.382Z	221.746° SW

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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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Check out FOSSASAT2E23, 66788 on other resources

View FOSSASAT2E23, 66788 on NASA - NSSDCA Website

View FOSSASAT2E23, 66788 on Heavens-Above

View FOSSASAT2E23, 66788 on Keep Track

View FOSSASAT2E23, 66788 on Celestrak

View FOSSASAT2E23, 66788 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

FOSSASAT2E23, 66788

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-08-26T22:49:56.860Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

FOSSASAT2E23 Visibility forecast

Co-orbital & Co-planar RSOs

Check out FOSSASAT2E23, 66788 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 5 hours ago