# Kosmos 2105

> Russian military early warning satellite

**Wikidata**: [Q3398208](https://www.wikidata.org/wiki/Q3398208)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_2105)  
**Source**: https://4ort.xyz/entity/kosmos-2105

## Summary
Kosmos 2105 is a Russian military early warning satellite launched in 1990. It belongs to the US-K series of Soviet and Russian satellites designed for missile detection and early warning. The satellite was launched aboard a Molniya-M rocket from the Plesetsk Cosmodrome.

## Key Facts
- **Launch Date**: November 20, 1990, at 02:33:14 UTC.  
- **Launch Vehicle**: Molniya-M rocket.  
- **Launch Site**: Plesetsk Cosmodrome Site 16.  
- **COSPAR ID**: 1990-099A.  
- **Satellite Catalog Number (SCN)**: 20941.  
- **Class**: US-K, a series of Soviet/Russian early warning satellites.  
- **Purpose**: Military early warning for missile detection.  

## FAQs
### Q: What was the purpose of Kosmos 2105?  
A: Kosmos 2105 was a military early warning satellite designed to detect missile launches as part of Russia's strategic defense system.  

### Q: What rocket launched Kosmos 2105?  
A: It was launched aboard a Molniya-M rocket, a Soviet space launcher commonly used for military and communications satellites.  

### Q: Where was Kosmos 2105 launched from?  
A: It was launched from Plesetsk Cosmodrome Site 16, a major Russian spaceport used for military and polar orbit missions.  

## Why It Matters  
Kosmos 2105 played a critical role in Russia's early warning satellite network, part of the broader US-K series that monitored potential missile threats during the Cold War and post-Soviet era. These satellites provided strategic intelligence to detect and respond to ballistic missile launches, contributing to nuclear deterrence and national security. The US-K system, including Kosmos 2105, represented a key technological and military asset for Russia, ensuring continuous surveillance capabilities amid geopolitical tensions.  

## Notable For  
- Part of the US-K series, a foundational Soviet/Russian early warning satellite system.  
- Launched during a period of significant military satellite deployment in the late Cold War.  
- Utilized the Molniya-M rocket, a workhorse of Soviet space launches.  

## Body  
### Launch Details  
- **Date**: November 20, 1990.  
- **Time**: 02:33:14 UTC.  
- **Site**: Plesetsk Cosmodrome Site 16.  

### Technical Specifications  
- **Class**: US-K (early warning satellite).  
- **Launch Vehicle**: Molniya-M.  
- **COSPAR ID**: 1990-099A.  
- **Catalog Number**: 20941.  

### Mission Context  
- Kosmos 2105 was part of Russia's efforts to maintain and modernize its early warning satellite network in the early 1990s.  
- The US-K series was a successor to earlier Soviet systems, improving reliability and coverage for missile detection.

## References

1. Jonathan's Space Report