TIANMU-1 03, 55973
Orbit data source: Space-Track
TIANMU-1 03, 55973 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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55973 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
Hangtian Tianmu
Mission
Operational Commercial Weather
Bus & Motor
TIANMU, Unknown motor
Mass
50 kg wet, ~50 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box, 0.8 m
Radar Cross Section
2.000 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 TIANMU-1 03
1 55973U 23039A 26153.30300344 .00016266 00000-0 32563-3 0 9993
2 55973 97.5226 326.6951 0004012 135.4980 224.6592 15.46831140178538Epoch: 2026-06-02T07:16Z
TLE epoch observation values (Epoch: 2026-06-02T07:16:19.497Z)
Latitude
-0.00002°
Longitude
-33.16405°
Altitude
431.069 km
Speed
7.652 km/s
True Right ascension
21h 46m 46s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
02:46:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
425.667 km
Perigee altitude
420.21 km
Semi-major axis
6,801.075 km
Eccentricity
0.0004
Inclination
97.5226°
RAAN
326.6951°
Arg. of periapsis
135.498°
True anomaly
224.6269°
Mean anomaly
224.6592°
Eccentric anomaly
224.64305°
Mean motion
3.8697 °/min
Orbital period
93.03 mins
BSTAR
0.00032563
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Other satellites on launch #39 in the year 2023 (2023-03-22 UTC)
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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.TIANMU-1 03 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 | 2026-06-03 00:55:31.791Z | 330.47° NNW | 2026-06-03 00:56:31.791Z | 297.358° NW | 28.464° | 2026-06-03 00:59:31.791Z | 222.317° SW |
| 4 mins | 2026-06-03 11:22:31.791Z | 131.808° SE | 2026-06-03 11:23:31.791Z | 85.763° E | 37.45° | 2026-06-03 11:26:31.791Z | 359.817° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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