PRAETORIAN SDA_618, 65581
Orbit data source: Space-Track
PRAETORIAN SDA_618, 65581 is a payload satellite owned by SDA (US) in LEO that was launched on Wed, 10 Sep 2025 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
65581 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
USRelated business
Manufacturer
York Space Sys
Mission
Operational Defense Communications
Bus & Motor
S-CLASS, Unknown motor
Mass
~300 kg wet, ~300 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 4 Pan, 14.5 m
Radar Cross Section
1.244 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 22 hours ago
TLE from 22 hours ago
0 PRAETORIAN SDA_618
1 65581U 25203S 26170.94095469 .00000180 00000-0 14921-3 0 9998
2 65581 81.3020 7.9356 0009634 180.2746 179.8408 13.84669976 39098Epoch: 2026-06-19T22:34Z
TLE epoch observation values (Epoch: 2026-06-19T22:34:58.485Z)
Latitude
0.00006°
Longitude
121.02921°
Altitude
957.294 km
Speed
7.37 km/s
True Right ascension
00h 31m 44s
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
07:16:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
951.63 km
Perigee altitude
937.52 km
Semi-major axis
7,322.712 km
Eccentricity
0.00096
Inclination
81.302°
RAAN
7.9356°
Arg. of periapsis
180.2746°
True anomaly
179.84111°
Mean anomaly
179.8408°
Eccentric anomaly
179.84095°
Mean motion
3.46366 °/min
Orbital period
103.94 mins
BSTAR
0.00014921
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 #203 in the year 2025 (2025-09-10 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.PRAETORIAN SDA_618 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-20 23:27:42.008Z | 34.306° NE | 2026-06-20 23:30:42.008Z | 67.208° ENE | 16.269° | 2026-06-20 23:33:42.008Z | 99.503° ESE |
| 10 mins | 2026-06-21 01:11:42.008Z | 343.499° N | 2026-06-21 01:15:42.008Z | 294.963° NW | 42.502° | 2026-06-21 01:21:42.008Z | 182.765° SSW |
| 8 mins | 2026-06-21 12:51:42.008Z | 137.903° SSE | 2026-06-21 12:55:42.008Z | 87.124° E | 25.488° | 2026-06-21 12:59:42.008Z | 37.913° NE |
| 10 mins | 2026-06-21 14:35:42.008Z | 221.387° SW | 2026-06-21 14:40:42.008Z | 293.159° NW | 32.579° | 2026-06-21 14:45:42.008Z | 352.898° N |
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 |
|---|