ONEWEB-0661, 55821
Orbit data source: Space-Track
ONEWEB-0661, 55821 is a payload satellite owned by One Web (NAA) (UK) in LEO that was launched on Thu, 09 Mar 2023 UTC via an FALCON 9 launch vehicle from the Air Force Eastern Test Range (AFETR). 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
55821 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
UKRelated business
Manufacturer
One Web
Mission
Operational Commercial Communications
Bus & Motor
ARROW, Unknown motor
Mass
148 kg wet, ~140 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Trap Box + 2 Pan, 6.7 m
Radar Cross Section
3.464 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 ONEWEB-0661
1 55821U 23029AB 26171.35849459 -.00000153 00000-0 -44585-3 0 9991
2 55821 87.8959 289.1106 0001646 96.5342 263.5975 13.14503158159803Epoch: 2026-06-20T08:36Z
TLE epoch observation values (Epoch: 2026-06-20T08:36:13.932Z)
Latitude
-0.00004°
Longitude
-108.52171°
Altitude
1,208.822 km
Speed
7.25 km/s
True Right ascension
19h 16m 26s
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
21:52:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,204.15 km
Perigee altitude
1,201.655 km
Semi-major axis
7,581.04 km
Eccentricity
0.00016
Inclination
87.8959°
RAAN
289.1106°
Arg. of periapsis
96.5342°
True anomaly
263.57876°
Mean anomaly
263.5975°
Eccentric anomaly
263.58813°
Mean motion
3.28814 °/min
Orbital period
109.48 mins
BSTAR
-0.00044585
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 #29 in the year 2023 (2023-03-09 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.ONEWEB-0661 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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-06-22 19:40:36.375Z | 6.597° NNE | 2026-06-22 19:46:36.375Z | 103.266° ESE | 42.994° | 2026-06-22 19:52:36.375Z | 169.766° S |
| 8 mins | 2026-06-22 21:31:36.375Z | 320.175° NNW | 2026-06-22 21:35:36.375Z | 281.14° WNW | 19.261° | 2026-06-22 21:39:36.375Z | 245.253° WSW |
| 12 mins | 2026-06-23 07:57:36.375Z | 169.454° S | 2026-06-23 08:03:36.375Z | 55.531° ENE | 43.689° | 2026-06-23 08:09:36.375Z | 4.695° NNE |
| 7 mins | 2026-06-23 09:50:36.375Z | 257.787° W | 2026-06-23 09:53:36.375Z | 286.763° WNW | 17.775° | 2026-06-23 09:57:36.375Z | 323.043° 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 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 |
|---|