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FORMOSAT-8A, 66666

Orbit data source: Space-Track

FORMOSAT-8A, 66666 is a payload satellite owned by TASA (TW) 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 src="https://www.satcat.com/sats-embedded/66666?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/66666?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66666, 2025-276A

Orbit

SSO

Country

TW / TWN

Related business

Taiwan Space Agency (TW)

Manufacturer

TASA

Mission

Operational Civil Imaging/Sci

Bus & Motor

FS8, AOCS

Mass

380 kg wet, 380 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

Box + 2 Pan, 2.2 m

Radar Cross Section

3.681 m²

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 FORMOSAT-8A
1 66666U 25276A   26147.20450697  .00001706  00000-0  13909-3 0  9994
2 66666  97.6533 221.7631 0005011 347.9969  12.1135 15.00786139 26912

Epoch: 2026-05-27T04:54Z

TLE epoch observation values (Epoch: 2026-05-27T04:54:29.402Z)

Latitude

0.00002°

Longitude

-96.62636°

Altitude

564.126 km

Speed

7.581 km/s

True Right ascension

14h 47m 03s

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

04:48:23

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

564.95 km

Perigee altitude

557.996 km

Semi-major axis

6,939.61 km

Eccentricity

0.0005

Inclination

97.6533°

RAAN

221.7631°

Arg. of periapsis

347.9969°

True anomaly

12.12556°

Mean anomaly

12.1135°

Eccentric anomaly

12.11953°

Mean motion

3.7544 °/min

Orbital period

95.89 mins

BSTAR

0.00013909

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

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FORMOSAT-8A 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	2026-05-28 05:01:23.942Z	168.875° S	2026-05-28 05:05:23.942Z	287.984° WNW	44.782°	2026-05-28 05:08:23.942Z	345.689° N
5 mins	2026-05-28 18:17:23.942Z	346.887° N	2026-05-28 18:19:23.942Z	295.263° NW	34.306°	2026-05-28 18:22:23.942Z	221.092° 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 FORMOSAT-8A, 66666 on other resources

View FORMOSAT-8A, 66666 on NASA - NSSDCA Website

View FORMOSAT-8A, 66666 on Heavens-Above

View FORMOSAT-8A, 66666 on Keep Track

View FORMOSAT-8A, 66666 on Celestrak

View FORMOSAT-8A, 66666 on Gunter's Space Page

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

FORMOSAT-8A, 66666

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2026-05-27T04:54:29.402Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

FORMOSAT-8A Visibility forecast

Co-orbital & Co-planar RSOs

Check out FORMOSAT-8A, 66666 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 15 hours ago