SJ-7, 28737
Orbit data source: Space-Track
SJ-7, 28737 is a payload satellite owned by CASC (CN) in SSO that was launched on Tue, 05 Jul 2005 UTC via a CHANG ZHENG 2D 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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28737 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
SAST
Mission
Operational Civil Technology
Bus & Motor
FY-1?, Unknown motor
Mass
~1,000 kg wet, ~1,000 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 1.0 m
Radar Cross Section
6.000 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 SJ-7
1 28737U 05024A 25291.26512610 .00012729 00000-0 64737-3 0 9991
2 28737 97.7545 310.3154 0018456 145.4162 214.8275 15.16838804111297Epoch: 2025-10-18T06:21Z
TLE epoch observation values (Epoch: 2025-10-18T06:21:46.895Z)
Latitude
0.00002°
Longitude
-172.12862°
Altitude
528.931 km
Speed
7.593 km/s
True Right ascension
20h 41m 15s
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
07:09:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
525.104 km
Perigee altitude
499.67 km
Semi-major axis
6,890.524 km
Eccentricity
0.00185
Inclination
97.7545°
RAAN
310.3154°
Arg. of periapsis
145.4162°
True anomaly
214.70694°
Mean anomaly
214.8275°
Eccentric anomaly
214.7672°
Mean motion
3.79459 °/min
Orbital period
94.87 mins
BSTAR
0.00064737
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Other satellites on launch #24 in the year 2005 (2005-07-05 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.SJ-7 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 | 2025-10-18 14:51:39.982Z | 329.671° NNW | 2025-10-18 14:52:39.982Z | 302.966° NW | 27.186° | 2025-10-18 14:55:39.982Z | 230.359° WSW |
| 6 mins | 2025-10-19 01:29:39.982Z | 172.209° S | 2025-10-19 01:32:39.982Z | 316.662° NNW | 43.001° | 2025-10-19 01:35:39.982Z | 344.603° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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