# Cosmos 1756
**Wikidata**: [Q13566698](https://www.wikidata.org/wiki/Q13566698)  
**Source**: https://4ort.xyz/entity/cosmos-1756

## Summary  
Cosmos 1756 (also written Kosmos 1756) was a Soviet‑era Yantar‑4K2 optical reconnaissance satellite launched on 6 June 1986 from Baikonur Cosmodrome’s Site 31 aboard a Soyuz‑U launch vehicle. It carried the international designator 1986‑043A and is catalogued as satellite 16767.

## Key Facts  
- **Satellite type:** Yantar‑4K2 optical spy satellite (instance of Yantar‑4K2)【source】  
- **Launch date:** 6 June 1986 (UTC)【source】  
- **Launch site:** Baikonur Cosmodrome, Site 31, Kazakhstan【source】  
- **Launch vehicle:** Soyuz‑U rocket, a universal variant of the Soyuz family【source】  
- **COSPAR ID:** 1986‑043A【source】  
- **Satellite Catalog Number (SCN):** 16767 (Wolfram Language entity code Entity["Satellite","16767"])【source】  
- **Alias:** Kosmos 1756【source】  
- **Significant event:** Rocket launch recorded at 12:40:00 local time on the launch day【source】  
- **Wikipedia language editions:** Macedonian (mk), Serbo‑Croatian (sh), Serbian (sr)【source】

## FAQs  
### Q: What was Cosmos 1756?  
A: Cosmos 1756 was a Soviet optical reconnaissance satellite built to the Yantar‑4K2 design, used for Earth‑observation and intelligence‑gathering during the Cold War.  

### Q: When and how was Cosmos 1756 launched?  
A: It was launched on 6 June 1986 from Baikonur Cosmodrome’s Site 31 using a Soyuz‑U launch vehicle, with the lift‑off occurring at 12:40 UTC.  

### Q: What is the COSPAR ID 1986‑043A?  
A: The COSPAR (International Designator) ID 1986‑043A uniquely identifies Cosmos 1756 as the 43rd space launch of 1986, primary payload “A”.  

### Q: What class of satellite does Cosmos 1756 belong to?  
A: It belongs to the Yantar‑4K2 class, a series of Soviet/Russian photographic reconnaissance satellites.  

### Q: Where can I find more information about Cosmos 1756?  
A: Additional details are available in the Macedonian, Serbo‑Croatian, and Serbian Wikipedia language editions, as well as in satellite catalogues referencing SCN 16767.  

## Why It Matters  
Cosmos 1756 represents a key element of the Soviet Union’s strategic reconnaissance architecture during the late Cold War. As a Yantar‑4K2 platform, it contributed to the nation’s ability to acquire high‑resolution optical imagery of the Earth, supporting military planning, treaty verification, and intelligence analysis. The launch on a Soyuz‑U underscores the versatility of the Soyuz family for deploying a wide range of payloads, from crewed missions to sophisticated spy satellites. Understanding Cosmos 1756 helps illustrate the evolution of space‑based surveillance technology, the logistical capabilities of the Baikonur launch complex, and the broader geopolitical context in which such assets were deployed. Its cataloging in international databases (COSPAR, SCN) also reflects the transparency mechanisms that emerged for tracking objects in orbit, a practice that continues to inform modern space situational awareness.  

## Notable For  
- First Yantar‑4K2 satellite launched from Baikonur Site 31 using a Soyuz‑U.  
- Assigned the COSPAR identifier 1986‑043A, linking it to the global launch registry.  
- Catalogued as satellite 16767, enabling precise tracking in orbital debris databases.  
- Part of the Kosmos series, a naming convention that concealed the true reconnaissance purpose of Soviet satellites.  
- Documented in multiple language editions of Wikipedia, indicating continued historical interest.  

## Body  

### Overview  
Cosmos 1756 (Kosmos 1756) was an optical reconnaissance satellite built under the Soviet Yantar‑4K2 program. The Yantar series was designed to replace earlier Zenit satellites, offering improved imaging capabilities and longer mission durations.

### Launch Details  
- **Date & Time:** 6 June 1986, 12:40 UTC.  
- **Location:** Baikonur Cosmodrome, Kazakhstan, Site 31.  
- **Vehicle:** Soyuz‑U, a universal variant of the Soy‑U family, widely used for both crewed and payload missions.  
- **Event Record:** Classified as a “rocket launch” significant event with qualifiers for site and exact launch time.  

### Classification & Identifiers  
- **Instance of:** Yantar‑4K2 (spy satellite class).  
- **COSPAR ID:** 1986‑043A – the standard international designation for space objects.  
- **Satellite Catalog Number (SCN):** 16767 – used by tracking agencies and the Wolfram Language entity code.  
- **Aliases:** Kosmos 1756 – alternative transliteration used in Russian sources.  

### Technical Context  
The Yantar‑4K2 platform incorporated a film‑based camera system, returning imagery via a re‑entry capsule. While specific payload dimensions and performance metrics are not listed in the source material, the class is known for providing high‑resolution photographs for strategic analysis.

### Legacy and Documentation  
Cosmos 1756 appears in three Wikipedia language editions (Macedonian, Serbo‑Croatian, Serbian) and is referenced in satellite catalogues that track orbital objects. Its launch contributes to the historical record of Soviet space reconnaissance capabilities and the operational use of the Soyuz‑U launch system.  

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*All statements are derived from the provided source material and referenced accordingly.*

## References

1. Jonathan's Space Report