# Yuri 1
**Wikidata**: [Q29611607](https://www.wikidata.org/wiki/Q29611607)  
**Source**: https://4ort.xyz/entity/yuri-1

## Summary
Yuri 1 is a communications satellite launched on April 7, 1978. It was deployed into orbit using a Delta 2000 series expendable launch system and is tracked under the international designation COSPAR ID 1978-039A.

## Key Facts
- **Launch Date:** April 7, 1978
- **COSPAR ID:** 1978-039A
- **Satellite Catalog Number (SCN):** 10792
- **Classification:** Communications satellite (designed for telecommunications)
- **Launch Vehicle:** Delta 2000 (series of American expendable launch systems)
- **Significant Event:** Rocket launch occurring on April 7, 1978
- **Google Knowledge Graph ID:** /g/1234zvt1
- **Wikipedia Languages:** Available in Polish (pl) and Portuguese (pt)

## FAQs
### Q: When was Yuri 1 launched?
A: Yuri 1 was launched on April 7, 1978. This event is recorded as the satellite's significant operational milestone.

### Q: What type of satellite is Yuri 1?
A: Yuri 1 is classified as a communications satellite. This type of artificial satellite is specifically designed for telecommunications relaying.

### Q: What rocket was used to launch Yuri 1?
A: The satellite was launched using a vehicle from the Delta 2000 series. This refers to a series of American expendable launch systems.

## Why It Matters
Yuri 1 serves as a historical data point in the timeline of global telecommunications infrastructure launched in the late 1970s. As an artificial satellite designed for telecommunications, it represents the era's reliance on space-based assets to connect distant regions. Its launch aboard the Delta 2000—an American expendable launch system—highlights the international nature of space logistics during that period, where specific launch platforms were utilized to deploy communication arrays into orbit. The satellite is tracked under specific international identifiers (COSPAR ID 1978-039A and SCN 10792), ensuring its distinct place in space object catalogs maintained by organizations such as the United Nations Office for Outer Space Affairs and US Space Command. Its inclusion in knowledge graphs and databases like Wolfram Language underscores its status as a verifiable entity in the history of spaceflight.

## Notable For
- **Specific Classification:** Identified explicitly as an artificial satellite designed for telecommunications.
- **Launch System:** Utilization of the Delta 2000 series, a notable American rocket family.
- **Precise Tracking:** Distinct identification via COSPAR ID (1978-039A) and Satellite Catalog Number (10792).
- **Historical Context:** Operations commencing in early April 1978.

## Body
### Identification and Classification
Yuri 1 is formally classified as an instance of a **communications satellite**. In the context of orbital mechanics and space tracking, it is assigned the **Satellite Catalog Number (SCN) 10792**. The Committee on Space Research (COSPAR) has designated it with the international ID **1978-039A**. This alphanumeric code indicates the year of launch (1978), the specific launch of that year (039), and the component designation (A).

### Launch Details
The satellite was successfully delivered to space on **April 7, 1978**. The launch event is cited as a "rocket launch," which serves as the primary significant event in the satellite's timeline.

### Launch Vehicle
The delivery system used for Yuri 1 was the **Delta 2000**. This vehicle is described as a series of American expendable launch systems. The use of the Delta 2000 series places Yuri 1 within a specific lineage of rocketry utilized during the late 1970s for placing payloads into orbit.

### Digital and Academic Presence
Yuri 1 is recognized in multiple digital databases:
- **Wolfram Language:** Coded as `Entity["Satellite", "10792"]`.
- **Google Knowledge Graph:** Identified by the ID `/g/1234zvt1`.
- **Wikipedia:** The entity has sitelinks in two languages: Polish (pl) and Portuguese (pt), with a total sitelink count of 2.

## References

1. Jonathan's Space Report