# S3-3

> This spacecraft was a small observatory in a near-polar orbit with eight different sensors on board. It was designed to observe various magnetospheric parameters and their interrelationships

**Wikidata**: [Q113275428](https://www.wikidata.org/wiki/Q113275428)  
**Source**: https://4ort.xyz/entity/s3-3

## Summary
S3-3 was a small spacecraft launched in 1976 to study Earth's magnetosphere using eight specialized sensors. It operated in a near-polar orbit to analyze magnetospheric parameters and their interrelationships, contributing to scientific understanding of space-environment interactions.

## Key Facts
- **Launch Date**: July 8, 1976
- **Launch Vehicle**: Titan IIID
- **Launch Site**: Vandenberg Space Launch Complex 2 East
- **COSPAR ID**: 1976-065B
- **NSSDCA ID**: 1976-065B
- **Aliases**: SESP S74-2A, SS74-2A, 09007, S74-2
- **Mission Focus**: Observing magnetospheric parameters with eight sensors
- **Orbit Type**: Near-polar

## FAQs
### Q: When was S3-3 launched?
A: S3-3 was launched on July 8, 1976, aboard a Titan IIID rocket from Vandenberg Space Launch Complex 2 East.

### Q: What was the primary purpose of S3-3?
A: The spacecraft was designed to observe and study various magnetospheric parameters and their interrelationships using its suite of eight sensors.

### Q: What type of orbit did S3-3 operate in?
A: It operated in a near-polar orbit, enabling comprehensive coverage of Earth's magnetosphere.

## Why It Matters
S3-3 played a critical role in advancing knowledge of Earth's magnetosphere, a region essential for understanding space weather and its impacts on satellites and terrestrial systems. By deploying eight distinct sensors, the mission provided insights into how different magnetospheric parameters interact, addressing key questions in space physics. Its near-polar orbit allowed for broad spatial coverage, enhancing the dataset's value for researchers. As part of the broader effort to map and model the near-Earth space environment, S3-3 contributed to foundational science that supports modern technological infrastructure, from communication networks to navigation systems.

## Notable For
- Carried eight specialized sensors to study magnetospheric phenomena.
- Operated in a near-polar orbit for extensive spatial data collection.
- Part of the Space Environment Satellite Program (SESP) as S74-2A.
- Utilized the Titan IIID launch vehicle, a variant of the Titan III rocket family.

## Body
### Launch Details
- **Date**: July 8, 1976
- **Vehicle**: Titan IIID, launched from Vandenberg Space Launch Complex 2 East
- **Identifier**: SCN 09007

### Mission Objectives
- Study magnetospheric parameters (e.g., particle fluxes, magnetic fields)
- Analyze interrelationships between observed phenomena
- Provide data to improve models of Earth's space environment

### Instrumentation
- Equipped with eight sensors tailored for magnetospheric research
- Instruments designed to measure multiple parameters simultaneously

### Orbit Characteristics
- **Type**: Near-polar
- **Purpose**: Enable continuous monitoring of magnetospheric dynamics across diverse latitudes

### Program Affiliation
- Part of the Space Environment Satellite Program (SESP)
- Designated S74-2A within the program's nomenclature

## References

1. Jonathan's Space Report