Key statistics
Satellite ISIS 1 at a glance.
Uptime
20613
Days in orbit
Revolutions
≈ 11.3
Per day
Orbit
HEO
HEO
Inclination
88.5
Latest
Satellite identification and parameters
Extended collection of information and parameters for ISIS 1.
Object identification
Identified? True
Debris? False
Object name: ISIS 1
International designator: 1969-009A
Object number (NORAD): 3669
Object ID (CCSDS): 3669
Country: CANADA (CA)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 127.402 minutes
Inclination: 88.4516 deg
SMA: 8387.102 km
Apoapsis: 3440.776 km
Periapsis: 577.158 km
RAAN: 182.0091 deg
Eccentricy: 0.1707156
Argument of periapsis: 223.6839 deg
Mean anomaly: 121.5997 deg
Mean motion: 11.30276937 rev/day
Mean motion (dot): 0.00000081 rev/day2
B* drag term: 0.000055765 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, 4:58 p.m. UTC
TLE line 0: 0 ISIS 1
TLE line 1: 1 03669U 69009A 25188.70704299 .00000081 00000-0 55765-4 0 9991
TLE line 2: 2 03669 88.4516 182.0091 1707156 223.6839 121.5997 11.30276937320850
Live tracking on map
Real-time ground track for satellite ISIS 1.
Associated space launch
ISIS 1 (International Satellite for Ionosphere Studies) was an ionospheric observatory instrumented with sweep- and fixed-frequency ionosondes, a VLF receiver, energetic and soft particle detectors, an ion mass spectrometer, an electrostatic probe, an electrostatic analyzer, a beacon transmitter, and a cosmic noise experiment.
ISIS 1 was lifted into orbit during the mission ‘Thor Delta E1 | Isis 1’, on board a Thor Delta E1 space rocket.
The launch took place on Jan. 30, 1969, 6:46 a.m. from Space Launch Complex 2E.
For more information about the launch, click the button.
Thor Delta E1 | Isis 1
Agency: N/A
Status: Launch Successful
Launch date: Jan. 30, 1969, 6:46 a.m. UTC
Rocket: Thor Delta E1
Launch pad: Space Launch Complex 2E
Location: Vandenberg SFB, CA, USA
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