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: 7 hours ago
TLE from 7 hours ago
0 SACI 1
1 25941U 99057B 25289.09764071 .00000797 00000-0 19811-3 0 9997
2 25941 98.6713 324.1378 0007618 331.1088 28.9685 14.54600322377159Epoch: 2025-10-16T02:20Z
TLE epoch observation values (Epoch: 2025-10-16T02:20:36.157Z)
Latitude
-0.00001°
Longitude
-95.8751°
Altitude
708.901 km
Speed
7.504 km/s
True Right ascension
21h 36m 33s
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
04:00:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
713.172 km
Perigee altitude
702.376 km
Semi-major axis
7,085.911 km
Eccentricity
0.00076
Inclination
98.6713°
RAAN
324.1378°
Arg. of periapsis
331.1088°
True anomaly
29.01082°
Mean anomaly
28.9685°
Eccentric anomaly
28.98965°
Mean motion
3.63873 °/min
Orbital period
98.94 mins
BSTAR
0.00019811
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Other satellites on launch #57 in the year 1999 (1999-10-14 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.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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-16 14:29:22.105Z | 43.709° NE | 2025-10-16 14:32:22.105Z | 86.058° E | 22.9° | 2025-10-16 14:36:22.105Z | 148.211° SSE |
| 6 mins | 2025-10-16 16:08:22.105Z | 337.91° N | 2025-10-16 16:10:22.105Z | 299.759° NW | 28.239° | 2025-10-16 16:14:22.105Z | 232.229° WSW |
| 6 mins | 2025-10-17 01:36:22.105Z | 117.35° SE | 2025-10-17 01:39:22.105Z | 65.257° ENE | 25.805° | 2025-10-17 01:42:22.105Z | 16.157° NNE |
| 6 mins | 2025-10-17 03:14:22.105Z | 215.949° SW | 2025-10-17 03:17:22.105Z | 270.929° WNW | 25.346° | 2025-10-17 03:20:22.105Z | 317.26° NNW |
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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