FLEX, 100690
Orbit data source: Space-Track
FLEX, 100690 is an ESA payload satellite in SSO that was launched on Tue, 15 Sep 2026 UTC launched from the French Guiana (FRGUI). 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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100690 intel report (Beta)
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Identifier
Orbit
Country
ESARelated business
Manufacturer
Thales Alenia
Mission
Operational Civil Imaging
Bus & Motor
SENTINEL-3A, Unknown motor
Mass
1,140 kg wet, 1,100 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Box + 1 Pan, 3.9 m
Radar Cross Section
12.696 m²
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 FLEX
1 A0690U 26209B 26261.92139446 .00000272 00000-0 13876-3 0 9998
2 A0690 98.6264 328.0250 0001996 91.5312 268.6096 14.23478291 534Epoch: 2026-09-18T22:06Z
TLE epoch observation values (Epoch: 2026-09-18T22:06:48.481Z)
Latitude
0.00005°
Longitude
-1.51436°
Altitude
816.57 km
Speed
7.445 km/s
True Right ascension
21h 52m 05s
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
02:28:59
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
812.198 km
Perigee altitude
809.329 km
Semi-major axis
7,188.9 km
Eccentricity
0.0002
Inclination
98.6264°
RAAN
328.025°
Arg. of periapsis
91.5312°
True anomaly
268.58673°
Mean anomaly
268.6096°
Eccentric anomaly
268.59817°
Mean motion
3.56082 °/min
Orbital period
101.1 mins
BSTAR
0.00013876
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Other satellites on launch #209 in the year 2026 (2026-09-15 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.FLEX 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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-09-19 17:14:13.153Z | 17.401° NNE | 2026-09-19 17:19:13.153Z | 71.922° E | 70.097° | 2026-09-19 17:24:13.153Z | 186.578° SSW |
| 4 mins | 2026-09-19 18:57:13.153Z | 319.671° NNW | 2026-09-19 18:59:13.153Z | 294.616° NW | 14.977° | 2026-09-19 19:01:13.153Z | 271.034° WNW |
| 4 mins | 2026-09-20 02:59:13.153Z | 78.122° E | 2026-09-20 03:00:13.153Z | 66.067° ENE | 14.055° | 2026-09-20 03:03:13.153Z | 31.009° NE |
| 9 mins | 2026-09-20 04:36:13.153Z | 172.553° S | 2026-09-20 04:40:13.153Z | 290.306° WNW | 74.865° | 2026-09-20 04:45:13.153Z | 343.649° 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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