# Kosmos 1675

> Russian military early warning satellite

**Wikidata**: [Q3399349](https://www.wikidata.org/wiki/Q3399349)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_1675)  
**Source**: https://4ort.xyz/entity/kosmos-1675

## Summary
Kosmos 1675 was a Russian military early warning satellite launched in 1985 as part of the US-K series, designed to detect missile launches. It operated as part of the Soviet/Russian nuclear deterrent system during the Cold War.

## Key Facts
- **Launch Date**: August 12, 1985, at 15:09:03 UTC.
- **Launch Vehicle**: Molniya-M rocket.
- **Launch Site**: Plesetsk Cosmodrome Site 16.
- **COSPAR ID**: 1985-071A.
- **Satellite Catalog Number (SCN)**: 15952.
- **Class**: US-K early warning satellite.
- **Alternate Names**: Kosmos 1675.
- **Primary Mission**: Detecting intercontinental ballistic missile (ICBM) launches using infrared sensors.

## FAQs
### Q: What was the purpose of Kosmos 1675?
A: Kosmos 1675 was designed to detect missile launches as part of the Soviet/Russian early warning system, providing critical data for nuclear deterrence during the Cold War.

### Q: When and where was Kosmos 1675 launched?
A: It was launched on August 12, 1985, at 15:09:03 UTC from Plesetsk Cosmodrome Site 16 aboard a Molniya-M rocket.

### Q: What type of satellite was Kosmos 1675?
A: It belonged to the US-K class of early warning satellites, equipped with infrared sensors to identify ICBM launches.

## Why It Matters
Kosmos 1675 played a role in the Soviet Union’s strategic defense network by monitoring for potential missile threats, a critical function during the Cold War. Early warning satellites like Kosmos 1675 provided leaders with advance notice of attacks, enabling retaliatory strikes and maintaining the balance of nuclear deterrence. As part of the US-K series, it exemplified the technological investments made by the Soviet Union to secure its borders and project power. Its launch in 1985 also highlighted the ongoing arms race, where space-based surveillance was essential for national security strategies.

## Notable For
- **US-K Series Membership**: Part of the first generation of Soviet early warning satellites.
- **Molniya-M Launch Vehicle**: Utilized a rocket designed for high-priority military and scientific missions.
- **Cold War Role**: Contributed to nuclear deterrence by monitoring missile activity.
- **Plesetsk Cosmodrome Launch**: Originated from a key Soviet spaceport specialized in military launches.

## Body

### Launch Details
- **Date/Time**: Launched on August 12, 1985, at 15:09:03 UTC.
- **Site**: Plesetsk Cosmodrome Site 16, a facility primarily used for military satellite deployments.
- **Vehicle**: Molniya-M rocket (8K78M), a four-stage launch vehicle derived from the R-7 Semyorka.

### Satellite Specifications
- **Class**: US-K (a series of satellites using infrared sensors to detect missile plumes).
- **Identifiers**:
  - **COSPAR ID**: 1985-071A.
  - **Satellite Catalog Number (SCN)**: 15952.
- **Mission Type**: Military early warning system component.

### Mission and Operations
- **Primary Function**: Monitoring for intercontinental ballistic missile (ICBM) launches to provide early warnings of potential nuclear attacks.
- **Technology**: Employed infrared sensors to detect heat signatures from rocket launches.
- **Deployment Context**: Part of a network of satellites in highly elliptical orbits to ensure continuous coverage of key regions.

### Legacy
- **System Contribution**: Enhanced the Soviet Union’s ability to detect and respond to missile threats, a cornerstone of its nuclear strategy.
- **Historical Context**: Operated during a period of heightened Cold War tensions, underscoring the critical role of space-based assets in military planning.

## References

1. Jonathan's Space Report