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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
25941 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
BR / 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 26139.92914362 .00000259 00000-0 71752-4 0 9990
2 25941 98.6379 187.4814 0008822 33.0423 327.1322 14.54881230408539Epoch: 2026-05-19T22:17Z
TLE epoch observation values (Epoch: 2026-05-19T22:17:58.008Z)
Latitude
-0.0001°
Longitude
-24.60629°
Altitude
707.463 km
Speed
7.505 km/s
True Right ascension
12h 29m 55s
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
15:16:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
713.11 km
Perigee altitude
700.609 km
Semi-major axis
7,084.996 km
Eccentricity
0.00088
Inclination
98.6379°
RAAN
187.4814°
Arg. of periapsis
33.0423°
True anomaly
327.07729°
Mean anomaly
327.1322°
Eccentric anomaly
327.10475°
Mean motion
3.63943 °/min
Orbital period
98.92 mins
BSTAR
0.000071752
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
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
Loading observer location...
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 | 2026-05-20 15:23:11.301Z | 36.006° NE | 2026-05-20 15:27:11.301Z | 101.225° ESE | 28.538° | 2026-05-20 15:31:11.301Z | 160.869° S |
| 6 mins | 2026-05-20 17:02:11.301Z | 335.806° NNW | 2026-05-20 17:05:11.301Z | 283.724° WNW | 22.952° | 2026-05-20 17:08:11.301Z | 241.754° WSW |
| 7 mins | 2026-05-21 02:30:11.301Z | 127.599° SE | 2026-05-21 02:33:11.301Z | 70.936° E | 30.962° | 2026-05-21 02:37:11.301Z | 5.492° NNE |
| 5 mins | 2026-05-21 04:09:11.301Z | 232.537° WSW | 2026-05-21 04:11:11.301Z | 265.946° W | 20.422° | 2026-05-21 04:14:11.301Z | 310.384° NW |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
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 |
|---|