# Kosmos 615

> Soviet military satellite

**Wikidata**: [Q53608](https://www.wikidata.org/wiki/Q53608)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_615)  
**Source**: https://4ort.xyz/entity/kosmos-615

Here’s the structured knowledge entry for **Kosmos 615**:

---

## Summary  
Kosmos 615 was a Soviet military satellite launched in 1973 as part of the DS-P1-I radar calibration program. It was designed to calibrate ground-based radar systems and was launched aboard a Kosmos-2I rocket from the Plesetsk Cosmodrome.  

## Key Facts  
- **Launch Date:** December 13, 1973, at 11:10:03 UTC.  
- **Launch Vehicle:** Kosmos-2I rocket.  
- **Launch Site:** Plesetsk Cosmodrome, Site 133.  
- **COSPAR ID:** 1973-099A.  
- **Manufacturer:** Pivdenne Design Office.  
- **Satellite Model:** DS-P1-I No.13 (a radar calibration satellite).  
- **Alternative Names:** DS-P1-I No.13, Cosmos 615.  
- **Significant Event:** Rocket launch from Plesetsk.  

## FAQs  
### Q: What was the purpose of Kosmos 615?  
A: Kosmos 615 was a radar calibration satellite designed to test and calibrate Soviet ground-based radar systems for military and tracking purposes.  

### Q: Where was Kosmos 615 launched from?  
A: It was launched from Plesetsk Cosmodrome Site 133, a major Soviet spaceport used for military and scientific missions.  

### Q: What rocket was used to launch Kosmos 615?  
A: It was launched aboard a Kosmos-2I rocket, a Soviet carrier rocket primarily used for deploying small military and scientific satellites.  

## Why It Matters  
Kosmos 615 played a critical role in the Soviet Union’s military and space surveillance infrastructure. As part of the DS-P1-I series, it helped refine radar tracking accuracy, which was essential for missile defense and space situational awareness during the Cold War. Its launch demonstrated the USSR’s continued investment in space-based military technology, contributing to the broader competition with the United States in space exploration and defense capabilities.  

## Notable For  
- **Military Application:** One of many Soviet satellites dedicated to radar calibration for defense systems.  
- **Cold War Context:** Launched during a period of intense space rivalry between the USSR and the US.  
- **Reliable Launch Vehicle:** Used the proven Kosmos-2I rocket, a workhorse of Soviet small satellite deployments.  

## Body  
### Launch and Mission  
- Launched on **December 13, 1973**, at **11:10:03 UTC**.  
- Mission: Radar calibration for Soviet defense systems.  

### Technical Specifications  
- **Model:** DS-P1-I No.13.  
- **Manufacturer:** Pivdenne Design Office (a key Soviet aerospace bureau).  

### Launch Details  
- **Rocket:** Kosmos-2I (a derivative of the R-12 ballistic missile).  
- **Site:** Plesetsk Cosmodrome Site 133 (a primary launch facility for polar orbits).  

### Legacy  
- Part of a series of satellites improving Soviet radar tracking capabilities.  
- Contributed to the USSR’s military space infrastructure during the Cold War.  

--- 

This entry is based strictly on the provided source material, with no fabricated details.

## References

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