OBJECT B, 66176

Orbit data source: Space-Track

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Recently launched and/or uncataloged satellites may have evolving metadata. Metadata may include but not limited to: Owner, Maufacturer, Bus, Motor, and Mission.

OBJECT B, 66176 is a satellite owned by CASC (CN) in SSO that was launched on Sun, 26 Oct 2025 UTC launched from the Xichang Space Center, China (XSC). Unknown objects in Earth's orbit typically refer to objects detected orbiting the Earth but have not yet been identified or cataloged. These objects could be anything from previously untracked satellites, spent rocket stages, debris from satellite collisions, or even natural meteoroids temporarily captured by Earth's gravity.

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<iframe src="https://www.satcat.com/sats-embedded/66176?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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https://www.satcat.com/sats-embedded/66176?theme=dark&initialShowStats=false

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Identifier

66176, 2025-242B

Orbit

SSO

Country

CN / PRC

Related business

China Aerospace Science and Technology Corporation (CASC) (CN)

Manufacturer

CALT

Mission

Spacecraft

Bus & Motor

CZ-3A STAGE 3, Unknown motor

Mass

~2,800 kg wet, ~2,800 kg dry

Launch date (UTC)

2025-10-26 (8 months ago)

Launch vehicle

Unknown

Launch site

Xichang Space Center, China (XSC)

Object type

Unknown

Shape & HBR

Cyl + 1 Nozzle, 4.2 m

Radar Cross Section

32.704 m², Large (>1 m²)

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Last TLE update: 8 hours ago

TLE from 8 hours ago

0 OBJECT B
1 66176U 25242B   26171.49920794  .00043561  00000-0  45554-3 0  9997
2 66176  97.4208 256.2021 0065846 252.1348 107.2720 15.61567716 36788

Epoch: 2026-06-20T11:58Z

TLE epoch observation values (Epoch: 2026-06-20T11:58:51.566Z)

Latitude

-0.00007°

Longitude

167.7743°

Altitude

399.762 km

Speed

7.663 km/s

True Right ascension

17h 04m 48s

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

07:18:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

424.539 km

Perigee altitude

335.539 km

Semi-major axis

6,758.176 km

Eccentricity

0.00658

Inclination

97.4208°

RAAN

256.2021°

Arg. of periapsis

252.1348°

True anomaly

107.99074°

Mean anomaly

107.272°

Eccentric anomaly

107.63155°

Mean motion

3.9066 °/min

Orbital period

92.15 mins

BSTAR

0.00045554

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Other satellites on launch #242 in the year 2025 (2025-10-26 UTC)

OBJECT A, 66175

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OBJECT B 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.
4 mins	2026-06-21 05:02:58.567Z	114.29° SE	2026-06-21 05:04:58.567Z	66.368° ENE	20.412°	2026-06-21 05:06:58.567Z	23.134° 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 OBJECT B, 66176 on other resources

View OBJECT B, 66176 on Heavens-Above

View OBJECT B, 66176 on Keep Track

View OBJECT B, 66176 on Celestrak

View OBJECT B, 66176 on Gunter's Space Page

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

OBJECT B, 66176

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-06-20T11:58:51.566Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #242 in the year 2025 (2025-10-26 UTC)

OBJECT B Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT B, 66176 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago