# Cosmos 1239
**Wikidata**: [Q12753177](https://www.wikidata.org/wiki/Q12753177)  
**Source**: https://4ort.xyz/entity/cosmos-1239

## Summary
Cosmos 1239 was a Soviet spacecraft launched on January 16, 1981, identified specifically as a Zenit-4MT class satellite. It was launched from the Plesetsk Cosmodrome Site 41 using a Soyuz-U rocket. The spacecraft is tracked internationally under the designator 1981-004A and Satellite Catalog Number 12140.

## Key Facts
- **Class:** Cosmos 1239 is an instance of the Zenit-4MT satellite class.
- **Launch Date:** The spacecraft launched on January 16, 1981.
- **Launch Time:** The significant event (rocket launch) occurred at 12:00:00 UTC.
- **Launch Site:** It launched from Plesetsk Cosmodrome Site 41.
- **Launch Vehicle:** The delivery system used was a Soyuz-U rocket (Soviet Union).
- **COSPAR ID:** The international designator for this object is 1981-004A.
- **Satellite Catalog Number:** It is registered under number 12140.
- **Aliases:** It is also known as Kosmos 1239.

## FAQs
### Q: What type of satellite was Cosmos 1239?
A: Cosmos 1239 was a Zenit-4MT class spacecraft. This classification is cited from academic sources and Wikidata.

### Q: When and where was Cosmos 1239 launched?
A: The satellite was launched on January 16, 1981, at 12:00:00 UTC from the Plesetsk Cosmodrome Site 41.

### Q: What rocket was used to launch Cosmos 1239?
A: Cosmos 1239 was launched using a Soyuz-U rocket, a universal variant of the Soyuz rocket design associated with the Soviet Union.

## Why It Matters
Cosmos 1239 serves as a specific historical data point within the Soviet space program, representing the operational use of the Zenit-4MT satellite class. Its launch highlights the ongoing activity at the Plesetsk Cosmodrome in the early 1980s and the utilization of the Soyuz-U launch vehicle, which was a workhorse for Soviet satellite deployment. By cataloging this entity with precise identifiers such as the COSPAR ID (1981-004A) and Satellite Catalog Number (12140), space historians and researchers can accurately track the object's trajectory and classification within the broader context of spaceflight history. The entry illustrates the standardized naming conventions of the "Cosmos" program, which the Soviet Union used to designate a large number of military and scientific satellites.

## Notable For
- **Specific Classification:** It is a verified example of the Zenit-4MT hardware class.
- **Precise Launch Time:** The launch is recorded with exact second-level precision (12:00:00).
- **Site Specificity:** It utilized Plesetsk Cosmodrome Site 41/1.
- **Multi-language Record:** The entity has Wikipedia entries in Macedonian, Serbo-Croatian, and Serbian.

## Body

### Mission Profile
Cosmos 1239 was launched as part of the Soviet Union's Cosmos program. The mission began with a rocket launch event on January 16, 1981. The launch proceeded from the Plesetsk Cosmodrome, specifically from Site 41. The timing of the launch was recorded precisely at 12:00:00.

### Technical Specifications
The spacecraft is classified as a **Zenit-4MT**. This model is a variant of the Zenit series. The launch vehicle responsible for placing Cosmos 1239 into orbit was the **Soyuz-U**, a universal rocket design derived from the Soyuz family.

### Identifiers and Cataloging
For tracking and archival purposes, Cosmos 1239 is defined by several standard identifiers:
*   **COSPAR ID:** 1981-004A
*   **Satellite Catalog Number (SCN):** 12140
*   **Wolfram Language Entity Code:** `Entity["Satellite", "12140"]`

These identifiers ensure the spacecraft is distinguishable from other objects in the space catalog. The data regarding this entity is supported by references found in Wikidata and academic sources (specifically referencing `Q6272367`).

## References

1. Jonathan's Space Report