# Cosmos 939
**Wikidata**: [Q13566938](https://www.wikidata.org/wiki/Q13566938)  
**Source**: https://4ort.xyz/entity/cosmos-939

## Summary
Cosmos 939 was a Soviet satellite launched on August 24, 1977, belonging to the Strela-1M class. It was deployed from the Plesetsk Cosmodrome Site 132 using a Kosmos-3M launch vehicle. The satellite is identified by the international designator 1977-079A and the satellite catalog number 10282.

## Key Facts
- **COSPAR ID:** 1977-079A
- **Satellite Catalog Number:** 10282
- **Instance of:** Strela-1M (satellite class)
- **Launch Date:** August 24, 1977
- **Launch Time:** 18:20:00
- **Launch Vehicle:** Kosmos-3M
- **Launch Site:** Plesetsk Cosmodrome Site 132
- **Country of Origin:** Soviet Union
- **Aliases:** Kosmos 939

## FAQs
### Q: When was Cosmos 939 launched?
A: Cosmos 939 was launched on August 24, 1977, at 18:20:00 UTC.

### Q: What rocket was used to launch Cosmos 939?
A: The satellite was launched using a Kosmos-3M rocket, a Russian launch vehicle commonly used during the Soviet era.

### Q: What type of satellite is Cosmos 939?
A: Cosmos 939 is classified as a Strela-1M satellite.

## Why It Matters
Cosmos 939 serves as a specific historical data point within the extensive Soviet space program, contributing to the record of Cold War-era space activities. As a unit of the Strela-1M class, it represents a segment of the series of "Kosmos" satellites used for various military and scientific purposes, although the specific mission details are often designated by their classification. The entry highlights the operational capabilities of the Plesetsk Cosmodrome, specifically Site 132, and the utilization of the Kosmos-3M launch vehicle during the late 1970s. Tracking entities like Cosmos 939 allows aerospace historians and analysts to maintain accurate orbital catalogs and understand the launch cadence of the Soviet Union during this period.

## Notable For
- Being a recognized member of the **Strela-1M** satellite class.
- Launching via the **Kosmos-3M** rocket, a prominent launch vehicle of the time.
- Precise tracking data including a specific **launch time of 18:20:00**.
- Deployment from **Plesetsk Cosmodrome Site 132**, a key Soviet launch complex.
- Being indexed in Wolfram Language as `Entity["Satellite", "10282"]`.

## Body

### Classification and Identity
Cosmos 939 is officially designated as an instance of the **Strela-1M** satellite class. It is assigned the COSPAR international designator **1977-079A**, indicating it was the primary object launched in that specific mission batch in 1977. It is also tracked under Satellite Catalog Number (SCN) **10282**.

### Launch Operations
The satellite was successfully launched on **August 24, 1977**. The launch took place at exactly **18:20:00** UTC. The mission utilized the **Kosmos-3M** launch vehicle, a two-stage rocket derived from the R-14 ballistic missile, which was frequently used for placing military and scientific payloads into low Earth orbit.

### Launch Site
The launch originated from **Plesetsk Cosmodrome Site 132**. Plesetsk was the primary launch site for the Kosmos-3M rocket and was one of the most active spaceports in the world during the Soviet era.

### Administrative Data
- **Wikipedia Presence:** The entity has sitelinks in three languages: Macedonian (mk), Serbo-Croatian (sh), and Serbian (sr).
- **Country Context:** The launch is associated with the **Soviet Union**.

## References

1. Jonathan's Space Report