USA 143

25724
Spacetrack Directory Number
1999-04-30
Orbit launches
3337.5 km
Average height
23062.21 km/h
Average velocity


Satellite information USA 143 - USA 143 (MILSTAR-2 1)

Spacetrack Directory Name USA 143
Alternative name USA 143 (MILSTAR-2 1)
Follow USA 143 USA 143 Tracker
Pass predictions USA 143 Pass predictions USA 143
Orbit launches 1999-04-30 (27 years ago)
Days in orbit 9992
Country/organisation of origin USA (US)
Starting point AFETR (Kennedy Space Center/Cape Canaveral, USA)
Perigee 1097 km
Apogee 5149 km
Orbit slope (inclination) 28.22°
Laps per day 9
Height USA 143 3337.5 km

Additional information USA 143

USA 143, 25724 is a payload satellite owned by USAF SMC (US) in LEO that was launched on Fri, 30 Apr 1999 UTC via a TITAN 401B/CENTAUR launch vehicle from the Air Force Eastern Test Range (AFETR). Payloads include a variety of satellites, spacecraft, and rockets 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.

satellite USA 143 Date of exalting 30.04.1999y. Average height of ISS USA 143 hundred 3337.5 km. Average velocity USA 143 is 23062.21 km/h. Inclination USA 143 satellite 28.22°.

TLE



Average orbit height USA 143

Average velocity USA 143

Average inclination USA 143

Mean right ascension of the ascending node (RAAN) USA 143

Mean argument of perigee USA 143

Mean semi-major axis of the orbit USA 143

Mean orbital eccentricity USA 143

Update time: 2026-09-06 20:00:22
Average height of ISS USA 143 is: 3337.5km
Average velocity USA 143 is: 23062.21km/h
Average orbit height USA 143 is: 28.22°
USA 143 a new group of Starlink satellites has been launched 1999-04-30
USA 143 is from 9992 days Days in orbit.