Key statistics
Satellite EXPLORER 40 (INJUN-5) at a glance.
Uptime
20891
Days in orbit
Revolutions
≈ 12.2
Per day
Orbit
MEO
Medium Earth Orbit
Inclination
80.7
Latest
Satellite identification and parameters
Extended collection of information and parameters for EXPLORER 40 (INJUN-5).
Object identification
Identified? True
Debris? False
Object name: EXPLORER 40 (INJUN-5)
International designator: 1968-066B
Object number (NORAD): 3338
Object ID (CCSDS): 3338
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 117.697 minutes
Inclination: 80.6566 deg
SMA: 7955.575 km
Apoapsis: 2477.194 km
Periapsis: 677.686 km
RAAN: 272.116 deg
Eccentricy: 0.11309729
Argument of periapsis: 76.468 deg
Mean anomaly: 295.9644 deg
Mean motion: 12.23475888 rev/day
Mean motion (dot): 0.00000201 rev/day2
B* drag term: 0.00019586996 1/REarth
Two-line elements (TLE)
Creation date: Oct. 18, 2025, 2:17 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 17, 2025, 11:58 p.m. UTC
TLE line 0: 0 EXPLORER 40 (INJUN-5)
TLE line 1: 1 03338U 68066B 25290.99913021 .00000201 00000-0 19587-3 0 9991
TLE line 2: 2 03338 80.6566 272.1160 1130973 76.4680 295.9644 12.23475888548693
Live tracking on map
Real-time ground track for satellite EXPLORER 40 (INJUN-5).
In-orbit conjunctions
A list of the most updated potential collisions computed for object EXPLORER 40 (INJUN-5).
Associated space launch
Explorer 39 was an inflatable sphere, 3.6 m in diameter. It was orbited to make atmospheric density determinations.
EXPLORER 40 (INJUN-5) was lifted into orbit during the mission ‘Scout B | Explorer 39’, on board a Scout B space rocket.
The launch took place on Aug. 8, 1968, 8:12 p.m. from Space Launch Complex 5.
For more information about the launch, click the button.
Scout B | Explorer 39
Agency: N/A
Status: Launch Successful
Launch date: Aug. 8, 1968, 8:12 p.m. UTC
Rocket: Scout B
Launch pad: Space Launch Complex 5
Location: Vandenberg SFB, CA, USA
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