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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Edit Public Description
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: 20 hours ago
TLE from 20 hours ago
0 CS1
1 49261U 21088B 25348.15881597 .00015087 00000-0 53823-3 0 9992
2 49261 97.4056 46.9074 0014218 24.6498 335.5418 15.28883960232099Epoch: 2025-12-14T03:48Z
TLE epoch observation values (Epoch: 2025-12-14T03:48:41.699Z)
Latitude
-0.0001°
Longitude
-93.34208°
Altitude
473.375 km
Speed
7.634 km/s
True Right ascension
03h 07m 37s
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
22:40:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.847 km
Perigee altitude
466.356 km
Semi-major axis
6,854.238 km
Eccentricity
0.00142
Inclination
97.4056°
RAAN
46.9074°
Arg. of periapsis
24.6498°
True anomaly
335.47423°
Mean anomaly
335.5418°
Eccentric anomaly
335.50803°
Mean motion
3.82476 °/min
Orbital period
94.12 mins
BSTAR
0.00053823
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-12-15 03:30:43.636Z | 127.131° SE | 2025-12-15 03:33:43.636Z | 60.621° ENE | 23.743° | 2025-12-15 03:35:43.636Z | 19.174° NNE |
| 4 mins | 2025-12-15 16:31:43.636Z | 53.344° ENE | 2025-12-15 16:32:43.636Z | 83.869° E | 29.798° | 2025-12-15 16:35:43.636Z | 161.426° S |
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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