Key statistics
Satellite OV1-4 at a glance.
Uptime
21758
Days in orbit
Revolutions
≈ 13.9
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
144.5
Latest
Satellite identification and parameters
Extended collection of information and parameters for OV1-4.
Object identification
Identified? True
Debris? False
Object name: OV1-4
International designator: 1966-025A
Object number (NORAD): 2121
Object ID (CCSDS): 2121
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 103.8 minutes
Inclination: 144.5049 deg
SMA: 7316.299 km
Apoapsis: 998.597 km
Periapsis: 877.731 km
RAAN: 249.8783 deg
Eccentricy: 0.00826007
Argument of periapsis: 110.4914 deg
Mean anomaly: 250.465 deg
Mean motion: 13.87284652 rev/day
Mean motion (dot): 0.00000428 rev/day2
B* drag term: 0.00013013525 1/REarth
Two-line elements (TLE)
Creation date: Oct. 23, 2025, 2:46 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 22, 2025, 4:39 p.m. UTC
TLE line 0: 0 OV1-4
TLE line 1: 1 02121U 66025A 25295.69430233 .00000428 00000-0 13014-3 0 9994
TLE line 2: 2 02121 144.5049 249.8783 0082601 110.4914 250.4650 13.87284652 18145
Live tracking on map
Real-time ground track for satellite OV1-4.
In-orbit conjunctions
A list of the most updated potential collisions computed for object OV1-4.
Associated space launch
The OV1 (Orbiting Vehicle 1) were small research satellite to be launched piggy back on Atlas ICBM test flights. They consisted in general of the OV1 satellite and the OV1-PM propulsion module (or upper stage) to reach orbit.
OV1-4 was lifted into orbit during the mission ‘Atlas D | OV1-4 & 5’, on board a Atlas D space rocket.
The launch took place on March 30, 1966, 9:20 a.m. from 576B3.
For more information about the launch, click the button.
Atlas D | OV1-4 & 5
Agency: N/A
Status: Launch Successful
Launch date: March 30, 1966, 9:20 a.m. UTC
Rocket: Atlas D
Launch pad: 576B3
Location: Vandenberg SFB, CA, USA
...
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