# Cosmos 921
**Wikidata**: [Q12907827](https://www.wikidata.org/wiki/Q12907827)  
**Source**: https://4ort.xyz/entity/cosmos-921

## Summary
Cosmos 921 (also known as Kosmos 921) is an artificial satellite launched by the Soviet Union on June 24, 1977. It was deployed into orbit using a Tsyklon-3 expendable launch vehicle from the Plesetsk Cosmodrome.

## Key Facts
- **Classification:** Artificial satellite (human-made object in orbit)
- **Launch Date:** June 24, 1977
- **Launch Time:** 10:30:00
- **Launch Vehicle:** Tsyklon-3 (Soviet/Ukrainian expendable launch vehicle)
- **Launch Site:** Plesetsk Cosmodrome Site 32
- **Satellite Catalog Number (SCN):** 10095
- **COSPAR ID:** 1977-055A
- **Alias:** Kosmos 921

## FAQs
### Q: What is Cosmos 921?
A: Cosmos 921 is a Soviet artificial satellite that was placed into orbit in 1977. It is part of the broader Cosmos series of spacecraft and is identified by the Satellite Catalog Number 10095.

### Q: When and where was Cosmos 921 launched?
A: The satellite was launched on June 24, 1977, at 10:30:00. The launch took place at Site 32 of the Plesetsk Cosmodrome.

### Q: What rocket was used to carry Cosmos 921 into space?
A: Cosmos 921 was launched using a Tsyklon-3 rocket. This is a Soviet/Ukrainian expendable launch vehicle specifically designed for putting satellites into orbit.

## Why It Matters
Cosmos 921 serves as a documented component of the Soviet Union's extensive orbital program during the late 1970s. As an artificial satellite, it represents the era's technological efforts to maintain a human-made presence in space for various orbital objectives. Its launch is technically significant due to its association with the Tsyklon-3 launch vehicle, a Soviet/Ukrainian expendable rocket system utilized for deploying payloads from the Plesetsk Cosmodrome.

The satellite is tracked internationally through standardized identification systems, including the COSPAR ID 1977-055A and the Satellite Catalog Number 10095. These identifiers allow for the precise historical tracking of the object within the global catalog of space missions. While its specific mission parameters are part of the larger Cosmos designation, its successful deployment from Plesetsk Site 32 highlights the operational capacity of Soviet space infrastructure during this period. Understanding Cosmos 921 contributes to the complete historical record of the Tsyklon-3's flight history and the broader timeline of international satellite deployment.

## Notable For
- **Launch Vehicle:** Utilized the Tsyklon-3, a notable Soviet/Ukrainian expendable launch vehicle.
- **Launch Site:** Deployed from Plesetsk Cosmodrome Site 32, a major facility for Soviet satellite launches.
- **Identification:** Assigned the international COSPAR ID 1977-055A and SCN 10095.
- **Nomenclature:** Part of the "Cosmos" (or Kosmos) designation, a primary naming convention for Soviet satellites.

## Body

### Launch Operations
Cosmos 921 was successfully launched on June 24, 1977. The significant event of the rocket launch was recorded at 10:30:00. The operation was conducted at the Plesetsk Cosmodrome, specifically utilizing Site 32. 

### Technical Identification
The satellite is cataloged in international space databases under two primary identifiers:
*   **SCN:** 10095
*   **COSPAR ID:** 1977-055A

In addition to its primary name, the entity is frequently referred to by the alias "Kosmos 921."

### Classification and Vehicle
Cosmos 921 is classified as an artificial satellite, defined as a human-made object put into an orbit. The mission was powered by the Tsyklon-3 launch vehicle. The Tsyklon-3 is a Soviet/Ukrainian expendable launch vehicle, a class of rocket used to transport payloads into space. At the time of the launch, this vehicle class was a standard component of the Soviet space program's orbital delivery systems.

## References

1. Jonathan's Space Report