SACI 1, 25941
Orbit data source: Space-Track
SACI 1, 25941 is a payload satellite owned by INPE (BR) in SSO that was launched on Thu, 14 Oct 1999 UTC via a CHANG ZHENG 4B launch vehicle from the Taiyaun Space Center, China (TSC). 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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25941 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
Unknown / BRAZRelated business
Manufacturer
INPE
Mission
Civil Science
Bus & Motor
SACI, Unknown motor
Mass
60 kg wet, 60 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 4 Pan, 0.6 m
Radar Cross Section
0.500 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 SACI 1
1 25941U 99057B 26038.07123300 .00000637 00000-0 15997-3 0 9996
2 25941 98.6554 82.1627 0007794 343.6455 16.4488 14.54780270393726Epoch: 2026-02-07T01:42Z
TLE epoch observation values (Epoch: 2026-02-07T01:42:34.531Z)
Latitude
-0.00003°
Longitude
-80.6812°
Altitude
707.743 km
Speed
7.505 km/s
True Right ascension
05h 28m 39s
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
12:21:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
712.71 km
Perigee altitude
701.666 km
Semi-major axis
7,085.325 km
Eccentricity
0.00078
Inclination
98.6554°
RAAN
82.1627°
Arg. of periapsis
343.6455°
True anomaly
16.47411°
Mean anomaly
16.4488°
Eccentric anomaly
16.46145°
Mean motion
3.63918 °/min
Orbital period
98.92 mins
BSTAR
0.00015997
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Other satellites on launch #57 in the year 1999 (1999-10-14 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.SACI 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-02-07 15:29:24.012Z | 22.373° NNE | 2026-02-07 15:33:24.012Z | 98.04° ESE | 41.375° | 2026-02-07 15:37:24.012Z | 180.572° SSW |
| 7 mins | 2026-02-08 02:36:24.012Z | 152.357° SSE | 2026-02-08 02:39:24.012Z | 78.727° E | 42.94° | 2026-02-08 02:43:24.012Z | 353.091° 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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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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