# Kosmos 2155

> Russian military early warning satellite

**Wikidata**: [Q2032466](https://www.wikidata.org/wiki/Q2032466)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_2155)  
**Source**: https://4ort.xyz/entity/kosmos-2155

## Summary
Kosmos 2155 is a Russian military early warning satellite launched on September 13, 1991, as part of the US-KS series. It was operated by the Russian Space Forces and deployed from the Baikonur Cosmodrome using a Proton-K rocket.

## Key Facts
- **Class**: US-KS (Russian/Soviet early warning satellite)
- **Operator**: Russian Space Forces
- **Launch Date**: September 13, 1991
- **Launch Vehicle**: Proton-K
- **Launch Site**: Baikonur Cosmodrome Site 81/23
- **Manufacturer**: NPO Lavochkin
- **Space Tug**: Blok DM-2
- **COSPAR ID**: 1991-064A
- **Wikidata ID**: Q21702

## FAQs
### Q: What was the purpose of Kosmos 2155?
A: Kosmos 2155 was a military early warning satellite designed to detect and track missile launches, part of the US-KS series.

### Q: Who operated Kosmos 2155?
A: The satellite was operated by the Russian Space Forces.

### Q: What rocket launched Kosmos 2155?
A: It was launched using a Proton-K rocket from Baikonur Cosmodrome Site 81/23.

### Q: When was Kosmos 2155 launched?
A: The satellite was launched on September 13, 1991.

### Q: Who manufactured Kosmos 2155?
A: The satellite was manufactured by NPO Lavochkin.

## Why It Matters
Kosmos 2155 was part of the US-KS series, a critical component of Russia's early warning system. These satellites played a vital role in detecting and tracking missile launches, providing early detection of potential threats. The US-KS satellites were part of a broader network that included ground-based radars and other sensors, ensuring continuous monitoring of strategic airspace. The satellite's deployment highlights Russia's commitment to maintaining a robust early warning infrastructure, which remains essential for national defense and strategic deterrence.

## Notable For
- **Military Early Warning**: One of the US-KS satellites, designed to detect missile launches.
- **Proton-K Launch**: Deployed using the Proton-K rocket, a reliable Soviet-era carrier rocket.
- **Russian Space Forces Operation**: Operated by the Russian Space Forces, reflecting its military role.
- **Blok DM-2 Space Tug**: Used as a space tug to adjust the satellite's orbit.
- **Baikonur Cosmodrome Launch**: Launched from Site 81/23, a key launch pad for Soviet and Russian military satellites.

## Body
### Classification and Role
Kosmos 2155 is classified as a US-KS satellite, part of a series of Russian and Soviet early warning satellites. These satellites were designed to detect and track missile launches, providing critical early warning of potential threats.

### Launch Details
- **Launch Date**: September 13, 1991
- **Launch Vehicle**: Proton-K, a Russian carrier rocket with a long history in Soviet and Russian space programs.
- **Launch Site**: Baikonur Cosmodrome Site 81/23, a primary launch site for Soviet and Russian military satellites.

### Technical Specifications
- **Manufacturer**: NPO Lavochkin, a major Russian aerospace manufacturer.
- **Space Tug**: Blok DM-2, used to adjust the satellite's orbit after launch.
- **COSPAR ID**: 1991-064A, the international identifier for the satellite.

### Operational Context
Kosmos 2155 was operated by the Russian Space Forces, indicating its military role. The satellite was part of a broader early warning system that included ground-based radars and other sensors, ensuring continuous monitoring of strategic airspace.

### Historical Significance
The US-KS series, including Kosmos 2155, was part of Russia's early warning infrastructure, which has been a cornerstone of its strategic defense capabilities. The satellite's deployment reflects the ongoing efforts to maintain and upgrade Russia's early warning systems.

## References

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