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T-MICROSAT-1, 66766

Orbit data source: Space-Track

T-MICROSAT-1, 66766 is a Taiwanese 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 src="https://www.satcat.com/sats-embedded/66766?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/66766?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66766, 2025-276DE

Orbit

SSO

Country

TW / TWN

Related business

Taiwan Space Agency (TW)

Manufacturer

TRON

Mission

Operational Commercial Communications

Bus & Motor

CUBESAT 8U, Unknown motor

Mass

15 kg wet, ~15 kg dry

Launch date (UTC)

2025-11-28 (7 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.2 m

Radar Cross Section

0.100 m², Medium (>0.1 m² and < 1m²)

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

TLE from 13 hours ago

0 T-MICROSAT-1
1 66766U 25276DE  26192.74767015  .00003585  00000-0  16442-3 0  9991
2 66766  97.4158 266.0936 0002232 103.5054 256.6430 15.21074875 34177

Epoch: 2026-07-11T17:56Z

TLE epoch observation values (Epoch: 2026-07-11T17:56:38.700Z)

Latitude

-0.0001°

Longitude

67.27592°

Altitude

506.044 km

Speed

7.611 km/s

True Right ascension

17h 44m 22s

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

19:41:41

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

501.097 km

Perigee altitude

498.027 km

Semi-major axis

6,877.699 km

Eccentricity

0.00022

Inclination

97.4158°

RAAN

266.0936°

Arg. of periapsis

103.5054°

True anomaly

256.61812°

Mean anomaly

256.643°

Eccentric anomaly

256.63056°

Mean motion

3.80521 °/min

Orbital period

94.61 mins

BSTAR

0.00016442

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

FLOCK 4H 32, 66735

FOSSASAT2E24, 66780

GYEONGGISAT-1, 66771

LEMUR-2-CELIJO-SB-PK, 66781

LEMUR-2-STARLIGHT, 66783

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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.

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T-MICROSAT-1 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.
5 mins	2026-07-12 18:12:19.984Z	342.594° N	2026-07-12 18:14:19.984Z	270.765° WNW	33.781°	2026-07-12 18:17:19.984Z	215.011° SW
5 mins	2026-07-13 04:49:19.984Z	152.488° SSE	2026-07-13 04:51:19.984Z	83.675° E	42.336°	2026-07-13 04:54:19.984Z	355.694° N

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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 T-MICROSAT-1, 66766 on other resources

View T-MICROSAT-1, 66766 on NASA - NSSDCA Website

View T-MICROSAT-1, 66766 on Heavens-Above

View T-MICROSAT-1, 66766 on Keep Track

View T-MICROSAT-1, 66766 on Celestrak

View T-MICROSAT-1, 66766 on Gunter's Space Page

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

T-MICROSAT-1, 66766

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: 2026-07-11T17:56:38.700Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

T-MICROSAT-1 Visibility forecast

Co-orbital & Co-planar RSOs

Check out T-MICROSAT-1, 66766 on other resources

Documentation

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