Showing default

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.

Loading next visibility...

Iframe embed code

<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

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

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 (2 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: 22 hours ago

TLE from 22 hours ago

0 FORMOSAT-8A
1 66666U 25276A   26034.21652246  .00002770  00000-0  21932-3 0  9991
2 66666  97.6547 110.4218 0006701  50.6104 309.5713 15.01392101  9962

Epoch: 2026-02-03T05:11Z

TLE epoch observation values (Epoch: 2026-02-03T05:11:47.540Z)

Latitude

-0.00001°

Longitude

-100.92692°

Altitude

562.699 km

Speed

7.582 km/s

True Right ascension

07h 21m 41s

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

05:37:28

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

564.253 km

Perigee altitude

554.955 km

Semi-major axis

6,937.741 km

Eccentricity

0.00067

Inclination

97.6547°

RAAN

110.4218°

Arg. of periapsis

50.6104°

True anomaly

309.51208°

Mean anomaly

309.5713°

Eccentric anomaly

309.54169°

Mean motion

3.75592 °/min

Orbital period

95.85 mins

BSTAR

0.00021932

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

FORMOSAT-8A Visibility forecast

Loading observer location...
Set Observer location

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	2026-02-04 05:19:38.852Z	192.94° SSW	2026-02-04 05:21:38.852Z	246.93° WSW	37.62°	2026-02-04 05:25:38.852Z	336.88° NNW
4 mins	2026-02-04 16:59:38.852Z	72.573° E	2026-02-04 17:00:38.852Z	92.849° ESE	19.04°	2026-02-04 17:03:38.852Z	142.476° SSE
5 mins	2026-02-04 18:33:38.852Z	334.669° NNW	2026-02-04 18:35:38.852Z	290.699° WNW	25.311°	2026-02-04 18:38:38.852Z	233.991° WSW

Items per page:

1–3 of 3 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

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

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-02-03T05:11:47.540Z)

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: 22 hours ago