USA 143

Satellite information

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Satellite Type and Status

PAYLOADIN ORBIT

Key statistics

Satellite USA 143 at a glance.

Uptime

9567

Days in orbit

Revolutions

≈ 9.4

Per day

Orbit

MEO

Medium Earth Orbit

Inclination

28.2

Latest

Satellite identification and parameters

Extended collection of information and parameters for USA 143.

Object identification

Identified? True

Debris? False

Object name: USA 143

International designator: 1999-023A

Object number (NORAD): 25724

Object ID (CCSDS): 25724

Country: UNITED STATES OF AMERICA (US)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 153.601 minutes

Inclination: 28.2337 deg

SMA: 9500.726 km

Apoapsis: 5147.157 km

Periapsis: 1098.026 km

RAAN: 86.9483 deg

Eccentricy: 0.2130959

Argument of periapsis: 311.5701 deg

Mean anomaly: 32.0369 deg

Mean motion: 9.37491943 rev/day

Mean motion (dot): -0.00000071 rev/day2

B* drag term: -0.0013782 1/REarth

Two-line elements (TLE)

Creation date: July 8, 2025, 2:27 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: July 7, 2025, 10:46 p.m. UTC

TLE line 0: 0 USA 143

TLE line 1: 1 25724U 99023A 25188.94926338 -.00000071 00000-0 -13782-2 0 9994

TLE line 2: 2 25724 28.2337 86.9483 2130959 311.5701 32.0369 9.37491943 40042

Live tracking on map

Real-time ground track for satellite USA 143.

In-orbit conjunctions

There are no conjunctions computed for USA 143, at the moment. Check back to stay up to date, as we update our databases every day.

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Associated space launch

Milstar (Military Strategic & Tactical Relay) is the tactical and strategic multiservice satellite system designed to provide survivable communications for U.S. forces worldwide.

USA 143 was lifted into orbit during the mission ‘Titan IVB | Milstar 3’, on board a Titan IVB space rocket.

The launch took place on April 30, 1999, 4:30 p.m. from Space Launch Complex 40.

For more information about the launch, click the button.

Launch to space Titan IVB | Milstar 3
Titan IVB | Milstar 3

Agency: N/A

Status: Launch Failure

Launch date: April 30, 1999, 4:30 p.m. UTC

Rocket: Titan IVB

Launch pad: Space Launch Complex 40

Location: Cape Canaveral SFS, FL, USA

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Latest news about this satellite

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