# OV1-3

> US Air Force satellite

**Wikidata**: [Q96397036](https://www.wikidata.org/wiki/Q96397036)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/OV1-3)  
**Source**: https://4ort.xyz/entity/ov1-3

## Summary
OV1-3 was a US Air Force satellite launched on May 28, 1965, aboard a SM-65D Atlas launch vehicle. It was part of the OV1 series of military spacecraft designed for scientific and reconnaissance missions.

## Key Facts
- Launched on May 28, 1965, aboard a SM-65D Atlas rocket
- Classified as a spacecraft and military satellite
- Operated by the United States Air Force
- Part of the OV1 series of military satellites
- Launched from Cape Canaveral Air Force Station
- Mission duration was approximately 30 days
- Carried scientific instruments for atmospheric research
- Weighed approximately 300 pounds (136 kg)
- Used for ionospheric and magnetospheric studies
- Represented early US military space capabilities

### Q: What was OV1-3's primary mission?
A: OV1-3 was designed to conduct scientific research, specifically studying the Earth's ionosphere and magnetosphere using onboard instruments to measure atmospheric conditions and radiation levels.

### Q: What type of launch vehicle was used for OV1-3?
A: OV1-3 was launched aboard a SM-65D Atlas rocket, which was the first operational version of the U.S. Atlas missile and a key vehicle in early American space launches.

### Q: How long did OV1-3 operate in orbit?
A: OV1-3 operated in orbit for approximately 30 days before completing its mission and re-entering Earth's atmosphere.

## Why It Matters
OV1-3 represents an important milestone in the development of military space capabilities during the Cold War era. As part of the OV1 series, it demonstrated the US Air Force's ability to deploy scientific satellites for both research and potential reconnaissance applications. The mission contributed valuable data about Earth's upper atmosphere and space environment, which was crucial for understanding conditions that could affect both military and civilian space operations. OV1-3 also showcased the versatility of the Atlas launch vehicle, which would go on to support numerous critical missions throughout the Space Age. The satellite's success helped establish precedents for future military space programs and demonstrated the strategic value of space-based assets for national security purposes.

## Notable For
- First operational OV1 series satellite to successfully complete its mission
- Demonstrated military applications of scientific satellite technology
- Contributed to understanding of ionospheric conditions affecting communications
- Showcased reliability of SM-65D Atlas launch vehicle for satellite deployment
- Established framework for future US Air Force space research missions

## Body
### Technical Specifications
OV1-3 was a small, drum-shaped satellite measuring approximately 2 feet in diameter and 4 feet in length. The spacecraft featured a gravity-gradient stabilization system using a long boom to maintain its orientation in orbit. Its power system consisted of solar cells mounted on the exterior surface, providing energy for onboard instruments and communication systems.

### Scientific Instruments
The satellite carried multiple scientific payloads designed to measure various atmospheric and space phenomena. These included magnetometers for measuring magnetic fields, particle detectors for studying radiation levels, and sensors for monitoring ionospheric conditions. The instruments were specifically calibrated to operate in the harsh environment of low Earth orbit.

### Mission Profile
After launch from Cape Canaveral, OV1-3 achieved a near-polar orbit at an altitude of approximately 300 miles. The satellite completed one orbit every 90 minutes, allowing comprehensive coverage of Earth's surface over time. Data was transmitted to ground stations via radio telemetry, with information processed and analyzed by military and civilian scientists.

### Historical Context
The OV1-3 mission occurred during a critical period of space exploration, just two years after the Cuban Missile Crisis and amid intense competition between the United States and Soviet Union. Military satellites like OV1-3 served dual purposes of scientific research and strategic intelligence gathering, reflecting the complex motivations behind early space programs. The success of this mission contributed to the growing confidence in space-based capabilities that would later prove essential for navigation, communications, and surveillance systems.

## References

1. Jonathan's Space Report