Key statistics
Satellite EXPLORER 18 (IMP-1) at a glance.
Uptime
764
Days in orbit
Revolutions
N/A
Per day
Orbit
OTHER
Other
Inclination
N/A
Latest
Satellite identification and parameters
Extended collection of information and parameters for EXPLORER 18 (IMP-1).
Object identification
Object name: EXPLORER 18 (IMP-1)
International designator: 1963-046A
Object number (NORAD): 693
Object ID (CCSDS): 693
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
Orbital parameters
Decay date: Dec. 30, 1965
Inclination: 35.19 deg
Period: 5610.65 minutes
Apoapsis: 192044.0 km
Periapsis: 4386.0 km
Two-line elements (TLE)
No TLE available, as this satellite has decayed and is no longer in orbit.
Live tracking on map
Satellite EXPLORER 18 (IMP-1) has decayed and is no longer in orbit. No tracking available.
In-orbit conjunctions
Satellite EXPLORER 18 (IMP-1) has decayed and is no longer in orbit. No conjunctions available.
Associated space launch
Test flight of the cryogenic Centaur stage.
EXPLORER 18 (IMP-1) was lifted into orbit during the mission ‘Atlas Centaur | AC-2 Instrumentation Ring’, on board a Atlas Centaur space rocket.
The launch took place on Nov. 27, 1963, 7:03 p.m. from Launch Complex 36A.
For more information about the launch, click the button.
Atlas Centaur | AC-2 Instrumentation Ring
Agency: N/A
Status: Launch Successful
Launch date: Nov. 27, 1963, 7:03 p.m. UTC
Rocket: Atlas Centaur
Launch pad: Launch Complex 36A
Location: Cape Canaveral SFS, FL, USA
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