# Yenisey A1

> planned Russian communications and data relay satellite

**Wikidata**: [Q18472220](https://www.wikidata.org/wiki/Q18472220)  
**Source**: https://4ort.xyz/entity/yenisey-a1

## Summary
Yenisey A1, also known as Luch 4, is a planned Russian communications and data relay satellite. It is designed to operate in geostationary orbit and is expected to launch no earlier than 2025. This satellite is intended to provide telecommunications services, operated by the Ministry of Defense of the Russian Federation.

## Key Facts
*   Yenisey A1 is a planned Russian communications and data relay satellite.
*   It is also known by the alias Luch 4.
*   The satellite has a mass of 3000 kilograms.
*   It is operated by the Ministry of Defense of the Russian Federation.
*   Yenisey A1 is powered by two spacecraft solar arrays.
*   Its launch is expected no earlier than 2025.
*   The satellite is planned to launch from Plesetsk Cosmodrome Site 35/1.
*   The expected launch vehicle for Yenisey A1 is the Angara-A5.
*   It is manufactured by JSC Information Satellite Systems Reshetnev.
*   Yenisey A1 uses the Ekspress-2000 spacecraft bus.

## FAQs
### Q: What is Yenisey A1?
A: Yenisey A1, also known as Luch 4, is a planned Russian communications and data relay satellite. It is designed to operate in geostationary orbit, providing telecommunications and data relay services.

### Q: When is Yenisey A1 expected to launch?
A: Yenisey A1 is expected to launch no earlier than 2025. It is planned to be launched from Plesetsk Cosmodrome Site 35/1.

### Q: Who will operate Yenisey A1?
A: Yenisey A1 will be operated by the Ministry of Defense of the Russian Federation. This indicates its role in supporting Russian governmental or military communication needs.

### Q: What is the mass of Yenisey A1?
A: Yenisey A1 has a mass of 3000 kilograms. This specification contributes to its classification as a heavy satellite.

### Q: What type of satellite is Yenisey A1?
A: Yenisey A1 is classified as both a communications satellite and a geostationary satellite. This means it is designed for telecommunications and will maintain a fixed position relative to the Earth's surface.

## Why It Matters
Yenisey A1 holds significance as a planned asset for Russia's space infrastructure, particularly for its Ministry of Defense. As a communications and data relay satellite, it is poised to provide critical telecommunications services, which are essential for modern military operations, national security, and potentially other governmental functions. Its deployment in geostationary orbit ensures continuous coverage over a specific region, enhancing Russia's independent capabilities for secure and reliable data transmission. The project underscores Russia's ongoing investment in its space-based communication assets, aiming to maintain and advance its strategic communication networks. The use of the Angara-A5 launch vehicle also highlights Russia's reliance on its domestic heavy-lift launch capabilities for key national space programs.

## Notable For
*   Its designation as a planned communications and data relay satellite specifically for the Ministry of Defense of the Russian Federation.
*   Its expected launch on the Russian Angara-A5 heavy-lift launch vehicle, indicating its strategic importance.
*   Its planned operation in geostationary orbit, providing continuous telecommunications coverage.
*   Its alias, Luch 4, connecting it to a series of Russian data relay satellites.

## Body

### Overview
Yenisey A1 is a planned Russian artificial satellite. It is primarily classified as a communications satellite, designed for telecommunications and data relay purposes. The satellite is also categorized as a geostationary satellite, meaning it will operate in geostationary orbit. It is known by the alias Luch 4.

### Technical Specifications
*   **Mass**: 3000 kilograms
*   **Power Source**: Powered by two spacecraft solar arrays.
*   **Spacecraft Bus**: Utilizes the Ekspress-2000 spacecraft bus.

### Mission Details
*   **Operator**: Ministry of Defense of the Russian Federation.
*   **Launch Date**: Expected no earlier than 2025.
*   **Launch Vehicle**: Expected to be launched by an Angara-A5, a Russian heavy-lift launch vehicle.
*   **Launch Site**: Plesetsk Cosmodrome Site 35/1.
*   **Orbit**: Geostationary orbit.

### Development and Origin
*   **Manufacturer**: JSC Information Satellite Systems Reshetnev.
*   **Country of Origin**: Russia.
*   **Country**: Russia.

## References

1. [Source](https://space.skyrocket.de/doc_sdat/luch-4.htm)