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TIANMU-1 04, 55974

Orbit data source: Space-Track

TIANMU-1 04, 55974 is a payload satellite owned by Hangtian Tianmu (CN) in SSO that was launched on Wed, 22 Mar 2023 UTC via a KUAIZHOU-1A launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). 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/55974?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/55974?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

55974, 2023-039B

Orbit

SSO

Country

CN / PRC

Related business

China Aerospace Science and Industry Corporation (CASIC) (CN)

Manufacturer

Hangtian Tianmu

Mission

Operational Commercial Weather

Bus & Motor

TIANMU, Unknown motor

Mass

50 kg wet, ~50 kg dry

Launch date (UTC)

2023-03-22 (3 years ago)

Launch vehicle

KUAIZHOU-1A

Launch site

Jiuquan Satellite Launch Center, China (JSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.8 m

Radar Cross Section

2.000 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 5 hours ago

TLE from 5 hours ago

0 TIANMU-1 04
1 55974U 23039B   26168.16899988  .00012463  00000-0  24115-3 0  9990
2 55974  97.5167 341.2907 0004878  95.9628 264.2178 15.47881557180841

Epoch: 2026-06-17T04:03Z

TLE epoch observation values (Epoch: 2026-06-17T04:03:21.589Z)

Latitude

-0.00003°

Longitude

15.02021°

Altitude

426.385 km

Speed

7.655 km/s

True Right ascension

22h 45m 09s

True Declination

0° 00' 00"

Sunlit

Object was in daylight 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

19:28:21

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

423.174 km

Perigee altitude

416.542 km

Semi-major axis

6,797.995 km

Eccentricity

0.00049

Inclination

97.5167°

RAAN

341.2907°

Arg. of periapsis

95.9628°

True anomaly

264.16219°

Mean anomaly

264.2178°

Eccentric anomaly

264.18999°

Mean motion

3.87233 °/min

Orbital period

92.97 mins

BSTAR

0.00024115

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Other satellites on launch #39 in the year 2023 (2023-03-22 UTC)

KZ-1A R/B, 55977 (Decayed)

TIANMU-1 05, 55975

TIANMU-1 06, 55976

TIANMU-1 03, 55973

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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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TIANMU-1 04 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	2026-06-17 11:56:19.803Z	190.245° SSW	2026-06-17 11:59:19.803Z	278.255° WNW	32.813°	2026-06-17 12:01:19.803Z	328.008° NNW
5 mins	2026-06-18 00:47:19.803Z	350.233° N	2026-06-18 00:49:19.803Z	287.126° WNW	33.999°	2026-06-18 00:52:19.803Z	213.833° 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 TIANMU-1 04, 55974 on other resources

View TIANMU-1 04, 55974 on NASA - NSSDCA Website

View TIANMU-1 04, 55974 on Heavens-Above

View TIANMU-1 04, 55974 on Keep Track

View TIANMU-1 04, 55974 on Celestrak

View TIANMU-1 04, 55974 on Gunter's Space Page

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

TIANMU-1 04, 55974

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-06-17T04:03:21.589Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #39 in the year 2023 (2023-03-22 UTC)

TIANMU-1 04 Visibility forecast

Co-orbital & Co-planar RSOs

Check out TIANMU-1 04, 55974 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 5 hours ago