Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

INTELSAT 503

retired

CommunicationsGEOCOSPAR 1981-119ALaunched 12/15/1981

Mission & Launch

Launch Mission: Intelsat 503
Launch Vehicle: Atlas SLV-3D Centaur
Launch Date: 12/15/1981
Last Contact: 1/19/1998

Orbit & Mass

Orbit Class: GEO
Altitude: 35,786 km
Inclination: 0.09 deg
Dry Mass: 775 kg
Total Mass: 1,928 kg

Payload Classification

Mission Type: Communications
Payload Category: COM
Payload Class: C

Organizations

Operator: Intelsat
Manufacturer: Ford Aerospace, Palo Alto

Constellation

Name: Intelsat IS GEO fleet
Active Satellites: 19

Registry

COSPAR ID: 1981-119A