SPAWAR-CAL-O

MilitaryLEOSSOPolarUnited States

SPAWAR-CAL-O is a military satellite, as listed in Jonathan McDowell's GCAT catalogue, with ownership listed as United States in CelesTrak's catalogue, currently in low Earth orbit, around 450 km altitude. It completes one orbit of Earth roughly every 94 minutes at an inclination of 97.4°. It was launched in 2018. Track its live position and see when it passes over your location on azmth.

Orbital data

NORAD ID: 43766
COSPAR ID: 2018-099J
Type: Military
Orbit: LEO
Perigee (lowest): 450 km
Apogee (highest): 460 km
Inclination: 97.42°
Orbital period: 94 min
Launch year: 2018
Owner (CelesTrak): United States

Orbital data updated: 2026-10-18 · from CelesTrak, refreshed every 2 hours.

Who operates it

United StatesLIVEMission ended 3 Dec 2018

Calibration target

Independent assessment

GCAT classes it as a military satellite for calibration and records its mission as ended on 3 Dec 2018 (17 Oct 2026).

Data: GCAT · CC BY 4.0 Class, mission and status adapted from GCAT by Jonathan McDowell, CC BY 4.0, data update 17 Oct 2026.

Military satellites, counted and explained →

About LEO orbit

Low Earth Orbit. Up to 2,000 km altitude. Where most satellites live including the ISS (~420 km), Starlink (~550 km), and Earth observation. Orbital period roughly 90 minutes.