LowEarth

PRAETORIAN SDA_603

NORAD 65566· COSPAR 2025-203B· Active satellite· Military & Reconnaissance· LEO
Launch
Launched on Sep 10, 2025 from Space Launch Complex 4E, United States of America aboard a Falcon 9 Block 5.
Falcon 9 Block 5 | SDA Tranche 1 Transport Layer B
Live · TLE epoch 2026-09-09 01:24 UTC
Orbit class
LEO — Low Earth Orbit (circular, < 2,000 km)
Operator
United States Government
Country
United States
Manufacturer
Launched
Sep 10, 2025
Mass
Apogee
961 km
Perigee
948 km
Inclination
81.30°
Period
1.73 h

Altitude history

Apogee and perigee for PRAETORIAN SDA_603 across 103 days of archived orbital elements (104 element sets, one per day).

Trend
Stable
Change
-0.2 km
Rate
-0.00 km/day
Now
948 × 961 km
954962946May 29Sep 9
Apogee Perigee

Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.

Launched with

20 other catalogued objects still in orbit from launch 2025-203 (Falcon 9 Block 5 | SDA Tranche 1 Transport Layer B).

Sources & further reading

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