# Cosmos 598
**Wikidata**: [Q12753917](https://www.wikidata.org/wiki/Q12753917)  
**Source**: https://4ort.xyz/entity/cosmos-598

## Summary
Cosmos 598 was a Soviet satellite launched on October 10, 1973, as part of the Zenit-4M program. It was launched from the Plesetsk Cosmodrome using a Voskhod rocket. The mission represents one of many payloads in the long-running Cosmos series managed by the Soviet Union.

## Key Facts
- Official designation: Cosmos 598
- Alternate name: Kosmos 598
- COSPAR ID: 1973-072A
- Launch date: October 10, 1973
- Launch time: 10:45 UTC
- Launch site: Plesetsk Cosmodrome Site 41
- Launch vehicle: Voskhod
- Spacecraft class: Zenit-4M
- SCN (Spacecraft Number): 06862
- Wikipedia coverage exists in Macedonian (mk), Serbo-Croatian (sh), and Serbian (sr)

## FAQs
### Q: What was the purpose of Cosmos 598?
A: Cosmos 598 was part of the Zenit-4M reconnaissance satellite program used by the Soviet Union for military intelligence gathering. These missions typically involved optical surveillance from low Earth orbit.

### Q: When and where was Cosmos 598 launched?
A: Cosmos 598 was launched on October 10, 1973, at 10:45 UTC from Plesetsk Cosmodrome Site 41 in the Soviet Union.

### Q: What kind of rocket was used to launch Cosmos 598?
A: Cosmos 598 was launched using a Voskhod launch vehicle, which was originally developed for crewed spaceflight but later adapted for uncrewed missions.

## Why It Matters
Cosmos 598 is representative of the extensive Soviet space-based reconnaissance efforts during the Cold War era. As part of the Zenit-4M program, it contributed to the USSR's strategic intelligence capabilities through orbital photography. Its successful deployment reflects the technological maturity of Soviet space systems in the early 1970s and underscores their parallel development of dual-use launch vehicles like the Voskhod. Understanding missions such as Cosmos 598 provides insight into the militarization of space and the global competition between superpowers during that period.

## Notable For
- Being part of the classified Zenit-4M military imaging satellite program
- Demonstrating reuse of human-rated rockets (Voskhod) for uncrewed payloads
- Reflecting the scale and frequency of Soviet space operations under the Cosmos naming convention
- Launch occurring during peak activity of the Soviet Union’s orbital reconnaissance initiatives

## Body

### Mission Overview
Cosmos 598 was a Soviet military satellite belonging to the Zenit-4M class. Missions within this classification were primarily focused on photographic reconnaissance. The satellite was launched into low Earth orbit and operated under the broader Cosmos program, which encompassed numerous scientific and military payloads.

### Technical Details
The spacecraft carried an imaging payload designed for high-resolution Earth observation. While detailed technical specifications remain largely classified, Zenit-4M satellites generally featured film-return capsules and advanced optics for wide-area surveillance. The system relied on physical retrieval of exposed film canisters via parachute recovery over Soviet territory.

### Launch Event
- **Date**: October 10, 1973  
- **Time**: 10:45 UTC  
- **Location**: Plesetsk Cosmodrome, Site 41  
- **Vehicle**: Voskhod (a modified version of the original crewed launcher)  

This launch marked another routine deployment in a well-established operational framework managed by the Soviet military space command.

### Program Context
As part of the Zenit program, Cosmos 598 followed earlier variants including Zenit-2 and Zenit-4. The Zenit-4M subclass introduced improvements in resolution and film capacity compared to predecessors. These satellites played a crucial role in monitoring NATO activities and verifying arms control agreements throughout the 1970s.

### Legacy and Classification
Information regarding the deactivation or orbital decay of Cosmos 598 remains limited due to the continuing sensitivity around its mission profile. Like other Zenit-class missions, much of its operational history has not been publicly disclosed. However, its inclusion in international satellite databases confirms its recognized status among tracked artificial objects in Earth orbit.

## References

1. Jonathan's Space Report