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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, 2025-276ED

Orbit

SSO

Country

ES / SPN

Related business

WISeKey International Holding Ltd (CH)

Manufacturer

Fossa Systems

Mission

Operational spacecraft

Bus & Motor

CUBESAT 3U, Unknown motor

Mass

4 kg wet, 4 kg dry

Launch date (UTC)

2025-11-28 (6 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 14.5 m

Radar Cross Section

RCS unknown

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 FOSSASAT2E23
1 66788U 25276ED  26141.18482238  .00005844  00000-0  26578-3 0  9999
2 66788  97.4247 215.2717 0005265 202.1779 157.9230 15.21098238 26320

Epoch: 2026-05-21T04:26Z

TLE epoch observation values (Epoch: 2026-05-21T04:26:08.653Z)

Latitude

-0°

Longitude

-90.09801°

Altitude

508.976 km

Speed

7.608 km/s

True Right ascension

14h 21m 05s

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

02:07:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

503.113 km

Perigee altitude

495.871 km

Semi-major axis

6,877.629 km

Eccentricity

0.00053

Inclination

97.4247°

RAAN

215.2717°

Arg. of periapsis

202.1779°

True anomaly

157.94566°

Mean anomaly

157.923°

Eccentric anomaly

157.93433°

Mean motion

3.80527 °/min

Orbital period

94.61 mins

BSTAR

0.00026578

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

FLOCK 4H 30, 66733

NUSAT-51 (YVONNE BRILL), 66740

LEMUR-2-CELIJO-SB-PK, 66781

LEMUR-2-STARLIGHT, 66783

OBJECT AB, 66691

MERCURY ONE (M1), 66742

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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.
7 mins	2026-05-21 17:37:18.042Z	18.407° NNE	2026-05-21 17:41:18.042Z	143.942° SSE	39.93°	2026-05-21 17:44:18.042Z	183.135° SSW
4 mins	2026-05-22 04:16:18.042Z	113.734° SE	2026-05-22 04:18:18.042Z	69.425° E	22.562°	2026-05-22 04:20:18.042Z	26.177° NE

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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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-05-21T04:26:08.653Z)

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: 13 hours ago