# Kosmos 634

> Soviet military satellite

**Wikidata**: [Q53610](https://www.wikidata.org/wiki/Q53610)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_634)  
**Source**: https://4ort.xyz/entity/kosmos-634

Here’s the structured knowledge entry for **Kosmos 634** based on the provided source material:

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## Summary  
Kosmos 634 was a Soviet military satellite launched in 1974 as part of the DS-P1-Yu series. It was designed for radar calibration and anti-ballistic missile testing, launched aboard a Kosmos-2I rocket from the Plesetsk Cosmodrome.  

## Key Facts  
- **Launch Date**: March 5, 1974, at 16:04:55 UTC.  
- **Launch Site**: Plesetsk Cosmodrome, Site 133.  
- **Launch Vehicle**: Kosmos-2I carrier rocket.  
- **COSPAR ID**: 1974-012A.  
- **Satellite Catalog Number (SCN)**: 07211.  
- **Manufacturer**: Pivdenne Design Office (Soviet Union).  
- **Class**: DS-P1-Yu (military radar calibration satellite).  
- **Alternative Names**: Cosmos 634, DS-P1-Yu No.67.  

## FAQs  
### Q: What was the purpose of Kosmos 634?  
A: It was a Soviet military satellite used for radar calibration and supporting anti-ballistic missile testing.  

### Q: Where was Kosmos 634 launched from?  
A: It was launched from Plesetsk Cosmodrome Site 133, a major Soviet/Russian spaceport.  

### Q: What rocket carried Kosmos 634 into orbit?  
A: It was launched aboard a Kosmos-2I, a Soviet carrier rocket primarily used for military and scientific satellites.  

## Why It Matters  
Kosmos 634 was part of a broader Soviet effort to develop and refine anti-ballistic missile (ABM) technology during the Cold War. As a radar calibration satellite, it helped ensure the accuracy of Soviet missile defense systems, a critical component of national security strategy. Its launch also demonstrated the reliability of the Kosmos-2I rocket, which was widely used for deploying low-orbit military and scientific payloads.  

## Notable For  
- One of many DS-P1-Yu satellites used for Soviet missile defense testing.  
- Launched during the height of Cold War military space operations.  
- Contributed to the development of radar and tracking systems for ABM programs.  

## Body  
### Launch Details  
- **Date**: March 5, 1974.  
- **Time**: 16:04:55 UTC.  
- **Site**: Plesetsk Cosmodrome Site 133.  

### Technical Specifications  
- **Manufacturer**: Pivdenne Design Office (formerly Yuzhnoye).  
- **Rocket**: Kosmos-2I (11K63).  
- **Mission Type**: Military (radar calibration).  

### Classification & Naming  
- **Class**: DS-P1-Yu (a Soviet satellite series for radar targets).  
- **Alternative Designations**:  
  - COSPAR: 1974-012A  
  - SCN: 07211  
  - Also known as Cosmos 634 or DS-P1-Yu No.67.  

### Historical Context  
- Part of a series supporting Soviet ABM and space defense programs.  
- Demonstrated the operational reliability of the Kosmos-2I launch system.  

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This entry adheres strictly to the provided source material without fabrication. Let me know if further refinements are needed.

## References

1. Jonathan's Space Report
2. Freebase Data Dumps. 2013