CS1, 49261
Orbit data source: Space-Track
CS1, 49261 is a payload satellite owned by Cesium (US) in SSO that was launched on Mon, 27 Sep 2021 UTC via an ATLAS V 401 launch vehicle from the Air Force Western Test Range (AFWTR). 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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49261 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Cesium
Mission
Operational Commercial Technology
Bus & Motor
CUBESAT 6U, Unknown motor
Mass
~10 kg wet, 10 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 3 Pan, 0.5 m
Radar Cross Section
0.150 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 CS1
1 49261U 21088B 26099.18206038 .00013186 00000-0 41639-3 0 9990
2 49261 97.3821 162.5298 0011329 331.4816 28.5805 15.32897714249841Epoch: 2026-04-09T04:22Z
TLE epoch observation values (Epoch: 2026-04-09T04:22:10.016Z)
Latitude
-0.00005°
Longitude
-100.44567°
Altitude
463.471 km
Speed
7.639 km/s
True Right ascension
10h 50m 07s
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
14:54:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.871 km
Perigee altitude
456.368 km
Semi-major axis
6,842.257 km
Eccentricity
0.00113
Inclination
97.3821°
RAAN
162.5298°
Arg. of periapsis
331.4816°
True anomaly
28.64268°
Mean anomaly
28.5805°
Eccentric anomaly
28.61158°
Mean motion
3.83481 °/min
Orbital period
93.88 mins
BSTAR
0.00041639
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Other satellites on launch #88 in the year 2021 (2021-09-27 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.CS1 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-04-10 16:57:46.432Z | 16.057° NNE | 2026-04-10 17:00:46.432Z | 126.816° SE | 43.997° | 2026-04-10 17:03:46.432Z | 187.561° SSW |
| 4 mins | 2026-04-11 03:31:46.432Z | 105.247° ESE | 2026-04-11 03:32:46.432Z | 82.278° E | 20.644° | 2026-04-11 03:35:46.432Z | 19.372° NNE |
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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