# Kosmos 1669

> only Progress spacecraft with a Kosmos designation

**Wikidata**: [Q5951256](https://www.wikidata.org/wiki/Q5951256)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_1669)  
**Source**: https://4ort.xyz/entity/kosmos-1669

## Summary
Kosmos 1669 is the only Progress spacecraft to be designated with a "Kosmos" rather than "Progress" name. This Soviet uncrewed spacecraft was launched in 1985 and played a role in the Salyut 7 space station program.

## Key Facts
- Kosmos 1669 was launched on July 19, 1985 from Gagarin's Start using a Soyuz-U launch vehicle
- It was a Progress 7K-TG class spacecraft, manufactured by S.P. Korolev Rocket and Space Corporation Energia
- The spacecraft has a COSPAR ID of 1985-062A and SCN number 15918
- Kosmos 1669 docked with the Salyut 7 space station at both the stern and bow positions between July 21 and August 28, 1985
- The spacecraft reentered Earth's atmosphere on August 30, 1985 due to orbital decay
- It is notable for being the only Progress spacecraft to be designated with a "Kosmos" name
- Wikipedia articles about Kosmos 1669 are available in 9 languages: Catalan, English, Hungarian, Japanese, Macedonian, Russian, Serbo-Croatian, Serbian, and Swedish

## FAQs
### Q: Why was this spacecraft named "Kosmos" instead of "Progress"?
A: Kosmos 1669 is uniquely designated with a "Kosmos" name rather than the standard "Progress" designation used for other spacecraft of its class, making it the only Progress spacecraft with this naming convention.

### Q: What was the mission purpose of Kosmos 1669?
A: Kosmos 1669's mission involved docking with and resupplying the Salyut 7 space station, performing berthing operations at both the stern and bow positions between July 21 and August 28, 1985.

### Q: How long did Kosmos 1669 remain in orbit?
A: The spacecraft remained in orbit for approximately 42 days, launching on July 19, 1985 and reentering Earth's atmosphere on August 30, 1985 due to orbital decay.

### Q: What distinguishes Kosmos 1669 from other Progress spacecraft?
A: Kosmos 1669 is distinguished by being the only Progress spacecraft with a "Kosmos" designation rather than the standard "Progress" naming convention used for other spacecraft of its class.

## Why It Matters
Kosmos 1669 represents a unique anomaly in Soviet spacecraft nomenclature and serves as an important data point for space historians studying the Soviet space program's operational practices. Despite its uncrewed nature, the spacecraft's successful docking operations with Salyut 7 contributed to the continuation of scientific research aboard the space station during its operational period. The fact that this Progress spacecraft received a "Kosmos" designation suggests it may have been part of a special program or testing phase, offering valuable insights into Soviet space program decision-making processes and the evolution of their cargo spacecraft fleet.

## Notable For
- The only Progress spacecraft to be designated with a "Kosmos" rather than "Progress" name
- Successfully docked with Salyut 7 at both the stern (July 21-28, 1985) and bow (August 28, 1985) positions
- Had a mission duration of approximately 42 days, shorter than typical Progress missions
- Launched on July 19, 1985 using a Soyuz-U rocket from Gagarin's Start
- Reentered Earth's atmosphere on August 30, 1985 due to orbital decay

## Body
### Mission Overview
Kosmos 1669 was a Soviet uncrewed spacecraft launched on July 19, 1985 at 13:05:08 from Gagarin's Start. The spacecraft entered a low Earth orbit and conducted its primary mission of docking with and resupplying the Salyut 7 space station.

### Technical Specifications
- Class: Progress 7K-TG
- Manufacturer: S.P. Korolev Rocket and Space Corporation Energia
- Launch Vehicle: Soyuz-U
- COSPAR ID: 1985-062A
- SCN: 15918
- Country of Origin: Soviet Union

### Mission Operations
Kosmos 1669 docked with Salyut 7 at the stern position on July 21, 1985, remaining connected until August 28, 1985. The spacecraft then repositioned to dock at the bow position on August 28, 1985, completing its docking operations. Throughout its mission, the spacecraft delivered supplies and equipment to the space station.

### Mission End
After approximately 42 days in orbit, Kosmos 1669 reentered Earth's atmosphere on August 30, 1985. The spacecraft's mission concluded due to orbital decay, which caused it to burn up during atmospheric entry. This marked the end of its operations in space.

## References

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