STARLINK-3604, 51815
Orbit data source: Space-Track
STARLINK-3604, 51815 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 25 Feb 2022 UTC via an FALCON 9 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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51815 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
297 kg wet, ~275 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 10.1 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 STARLINK-3604
1 51815U 22017AZ 26171.43664066 .00086911 00000-0 53109-2 0 9999
2 51815 53.1601 227.7472 0001103 82.4953 277.6164 15.09529323239595Epoch: 2026-06-20T10:28Z
TLE epoch observation values (Epoch: 2026-06-20T10:28:45.753Z)
Latitude
0°
Longitude
161.90528°
Altitude
538.428 km
Speed
7.594 km/s
True Right ascension
15h 10m 59s
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
21:33:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
538.654 km
Perigee altitude
537.129 km
Semi-major axis
6,916.028 km
Eccentricity
0.00011
Inclination
53.1601°
RAAN
227.7472°
Arg. of periapsis
82.4953°
True anomaly
277.60387°
Mean anomaly
277.6164°
Eccentric anomaly
277.61014°
Mean motion
3.77362 °/min
Orbital period
95.4 mins
BSTAR
0.0053109
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Other satellites on launch #17 in the year 2022 (2022-02-25 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-3604 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-06-22 10:33:29.224Z | 338.244° N | 2026-06-22 10:35:29.224Z | 8.544° NNE | 14.492° | 2026-06-22 10:37:29.224Z | 41.36° NE |
| 6 mins | 2026-06-22 12:13:29.224Z | 330.294° NNW | 2026-06-22 12:15:29.224Z | 15.6° NNE | 33.743° | 2026-06-22 12:19:29.224Z | 105.356° ESE |
| 4 mins | 2026-06-22 13:53:29.224Z | 264.842° W | 2026-06-22 13:55:29.224Z | 217.174° SW | 23.377° | 2026-06-22 13:57:29.224Z | 180.926° SSW |
| 6 mins | 2026-06-23 05:23:29.224Z | 203.352° SW | 2026-06-23 05:25:29.224Z | 143.581° SSE | 39.059° | 2026-06-23 05:29:29.224Z | 58.192° ENE |
| 5 mins | 2026-06-23 07:03:29.224Z | 296.354° NW | 2026-06-23 07:05:29.224Z | 344.102° N | 23.827° | 2026-06-23 07:08:29.224Z | 31.957° NE |
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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