STARLINK-31121, 58685
Orbit data source: Space-Track
STARLINK-31121, 58685 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 29 Dec 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.
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58685 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK V2M, Unknown motor
Mass
730 kg wet, ~700 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 17.7 m
Radar Cross Section
33.884 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 STARLINK-31121
1 58685U 23211U 26171.44279833 -.00000010 00000-0 91678-5 0 9996
2 58685 42.9989 224.6098 0001422 276.4178 83.6512 15.27576612138188Epoch: 2026-06-20T10:37Z
TLE epoch observation values (Epoch: 2026-06-20T10:37:37.775Z)
Latitude
-0.00001°
Longitude
156.54504°
Altitude
482.727 km
Speed
7.626 km/s
True Right ascension
14h 58m 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
21:26:20
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.981 km
Perigee altitude
484.029 km
Semi-major axis
6,863.142 km
Eccentricity
0.00014
Inclination
42.9989°
RAAN
224.6098°
Arg. of periapsis
276.4178°
True anomaly
83.6674°
Mean anomaly
83.6512°
Eccentric anomaly
83.6593°
Mean motion
3.81732 °/min
Orbital period
94.31 mins
BSTAR
0.0000091678
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Other satellites on launch #211 in the year 2023 (2023-12-29 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.STARLINK-31121 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 | 2026-06-22 11:44:19.972Z | 279.707° WNW | 2026-06-22 11:47:19.972Z | 222.725° SW | 35.542° | 2026-06-22 11:50:19.972Z | 137.607° SSE |
| 6 mins | 2026-06-23 06:20:19.972Z | 226.946° WSW | 2026-06-23 06:22:19.972Z | 183.178° SSW | 37.93° | 2026-06-23 06:26:19.972Z | 77.084° E |
| 6 mins | 2026-06-23 07:59:19.972Z | 277.614° WNW | 2026-06-23 08:01:19.972Z | 322.408° NNW | 38.791° | 2026-06-23 08:05:19.972Z | 71.594° E |
| 6 mins | 2026-06-23 09:38:19.972Z | 292.795° NW | 2026-06-23 09:41:19.972Z | 41.379° NE | 39.667° | 2026-06-23 09:44:19.972Z | 90.1° ESE |
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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