STARLINK-3618, 51998
Orbit data source: Space-Track
STARLINK-3618, 51998 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 09 Mar 2022 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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51998 intel report (Beta)
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Edit Public Description
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: 1 day ago
TLE from 1 day ago
0 STARLINK-3618
1 51998U 22025AU 25346.45996128 -.00000389 00000-0 -63681-5 0 9998
2 51998 53.2175 50.7105 0001273 86.7854 273.3284 15.08830063207750Epoch: 2025-12-12T11:02Z
TLE epoch observation values (Epoch: 2025-12-12T11:02:20.654Z)
Latitude
-0.00001°
Longitude
163.72316°
Altitude
540.62 km
Speed
7.593 km/s
True Right ascension
03h 22m 50s
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
09:14:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.899 km
Perigee altitude
539.138 km
Semi-major axis
6,918.156 km
Eccentricity
0.00013
Inclination
53.2175°
RAAN
50.7105°
Arg. of periapsis
86.7854°
True anomaly
273.31384°
Mean anomaly
273.3284°
Eccentric anomaly
273.32112°
Mean motion
3.77188 °/min
Orbital period
95.44 mins
BSTAR
-0.0000063681
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Other satellites on launch #25 in the year 2022 (2022-03-09 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-3618 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 | 2025-12-13 12:57:36.484Z | 341.1° N | 2025-12-13 12:59:36.484Z | 30.284° NE | 28.428° | 2025-12-13 13:02:36.484Z | 90.441° ESE |
| 6 mins | 2025-12-13 14:36:36.484Z | 285.736° WNW | 2025-12-13 14:38:36.484Z | 241.404° WSW | 31.562° | 2025-12-13 14:42:36.484Z | 158.945° S |
| 6 mins | 2025-12-14 06:07:36.484Z | 193.169° SSW | 2025-12-14 06:10:36.484Z | 120.339° SE | 30.976° | 2025-12-14 06:13:36.484Z | 66.993° ENE |
| 5 mins | 2025-12-14 07:47:36.484Z | 279.498° WNW | 2025-12-14 07:49:36.484Z | 328.631° NNW | 28.891° | 2025-12-14 07:52:36.484Z | 30.329° 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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