# Cosmos  637

> communications satellite

**Wikidata**: [Q592825](https://www.wikidata.org/wiki/Q592825)  
**Source**: https://4ort.xyz/entity/cosmos-637

## Summary
Cosmos 637 was a communications satellite launched on March 26, 1974, using a Proton-K rocket from the Baikonur Cosmodrome. It was part of the Soviet Union's Kosmos satellite program and was equipped with a Blok-DM space tug for orbital adjustments.

## Key Facts
- **Class**: Communications satellite
- **Launch Date**: March 26, 1974
- **Launch Vehicle**: Proton-K
- **Launch Site**: Baikonur Cosmodrome Site 81/23
- **Launch Time**: 13:35:00 UTC
- **Space Tug**: Blok-DM
- **COSPAR ID**: 1974-017A
- **SCN (NORAD Catalog Number)**: 07229
- **Wikipedia Availability**: Available in Hungarian, Macedonian, Serbo-Croatian, and Serbian

## FAQs
### Q: What type of satellite was Cosmos 637?
A: Cosmos 637 was a communications satellite designed for telecommunications.

### Q: Which rocket launched Cosmos 637?
A: Cosmos 637 was launched by a Proton-K rocket from the Baikonur Cosmodrome on March 26, 1974.

### Q: What was the purpose of the Blok-DM on Cosmos 637?
A: The Blok-DM served as a space tug to adjust the satellite's orbit after launch.

### Q: Where can I find more information about Cosmos 637?
A: Detailed information is available in Wikipedia articles in Hungarian, Macedonian, Serbo-Croatian, and Serbian.

### Q: What was the significance of the COSPAR ID for Cosmos 637?
A: The COSPAR ID (1974-017A) is a unique identifier assigned to the satellite by the Committee on Space Research.

## Why It Matters
Cosmos 637 was part of the Soviet Union's extensive Kosmos satellite program, which played a crucial role in early space communications. Launched during the Cold War era, it contributed to the development of satellite-based telecommunications infrastructure. The use of a Proton-K rocket and Blok-DM space tug demonstrated advanced orbital maneuvering capabilities. While specific details about its operational role are limited, it represents a key milestone in the Soviet space program's efforts to establish a global communications network.

## Notable For
- **First Use of Blok-DM**: Cosmos 637 was one of the first satellites to utilize the Blok-DM space tug for orbital adjustments.
- **Cold War Communications**: Part of the Soviet Union's early satellite communications initiatives.
- **Proton-K Launch**: Demonstrated the reliability of the Proton-K rocket in deploying communications satellites.
- **COSPAR Identification**: Assigned a unique identifier (1974-017A) by the Committee on Space Research.
- **Multilingual Documentation**: Available in multiple languages, indicating its broader interest and documentation efforts.

## Body
### Classification
Cosmos 637 was classified as a communications satellite, designed to support telecommunications. It was part of the broader Kosmos satellite program, which included various scientific and military missions.

### Launch Details
- **Date**: March 26, 1974
- **Time**: 13:35:00 UTC
- **Vehicle**: Proton-K
- **Site**: Baikonur Cosmodrome Site 81/23

### Orbital Adjustments
The satellite was equipped with a Blok-DM space tug, which facilitated precise orbital adjustments after launch. This technology was critical for maintaining the satellite's operational position.

### Identification
- **COSPAR ID**: 1974-017A
- **SCN**: 07229

### Documentation
Cosmos 637 has Wikipedia entries in Hungarian, Macedonian, Serbo-Croatian, and Serbian, reflecting its broader documentation and interest across different linguistic communities.

## References

1. Jonathan's Space Report