# Iridium 77

> communications satellite operated by Iridium Communications.

**Wikidata**: [Q16064294](https://www.wikidata.org/wiki/Q16064294)  
**Source**: https://4ort.xyz/entity/iridium-77

## Summary
Iridium 77 is a communications satellite operated by Iridium Communications. It is an integral part of the Iridium satellite constellation, which is designed to provide global voice and data coverage. The satellite was launched on September 8, 1998, aboard a Delta II rocket.

## Key Facts
*   Iridium 77 is a communications satellite.
*   It is operated by Iridium Communications.
*   It is an instance of the Iridium satellite constellation.
*   The launch date for Iridium 77 was September 8, 1998.
*   It was launched from Vandenberg Space Launch Complex 2.
*   The launch vehicle used was a Delta II rocket.
*   Its Satellite Catalog Number (SCN) is 25471.
*   Its COSPAR ID is 1998-051E.

## FAQs
### Q: What is Iridium 77?
A: Iridium 77 is a communications satellite operated by Iridium Communications. It functions as part of the Iridium satellite constellation, which provides global voice and data coverage.

### Q: When was Iridium 77 launched?
A: Iridium 77 was launched on September 8, 1998.

### Q: What rocket launched Iridium 77?
A: Iridium 77 was launched by a Delta II rocket, which is a retired expendable launch system.

### Q: Where was Iridium 77 launched from?
A: Iridium 77 was launched from Vandenberg Space Launch Complex 2.

### Q: What is the purpose of Iridium 77?
A: As a communications satellite within the Iridium constellation, its purpose is to contribute to the provision of global voice and data coverage.

## Why It Matters
Iridium 77 is a communications satellite that plays a vital role within the Iridium satellite constellation. This constellation is globally significant for providing comprehensive voice and data coverage, making Iridium 77 an integral component of a system designed to enable communication across the entire planet, especially in remote areas where traditional terrestrial networks are unavailable. Its successful launch on September 8, 1998, aboard a Delta II rocket from Vandenberg Space Launch Complex 2, was a crucial step in the deployment and operational capacity of this groundbreaking global communication infrastructure. By contributing to the Iridium network, Iridium 77 helps facilitate essential communication services, underscoring its enduring relevance in the field of satellite communications and its contribution to connecting the world.

## Notable For
*   Being a communications satellite operated by Iridium Communications.
*   Its role as an instance of the Iridium satellite constellation, which provides global voice and data coverage.
*   Its specific launch details: launched on September 8, 1998, by a Delta II rocket from Vandenberg Space Launch Complex 2.
*   Its unique identification numbers: Satellite Catalog Number (SCN) 25471 and COSPAR ID 1998-051E.

## Body
### Overview
*   Iridium 77 is a communications satellite.
*   It is operated by Iridium Communications.
*   It is an instance of the Iridium satellite constellation.
*   The Iridium satellite constellation is known for providing global voice and data coverage.

### Launch Details
*   Iridium 77 was launched on September 8, 1998.
*   The launch occurred from Vandenberg Space Launch Complex 2.
*   The launch vehicle utilized was the Delta II rocket.
*   The Delta II is a retired expendable launch system belonging to the Delta rocket family.

### Identifiers
*   The Satellite Catalog Number (SCN) for Iridium 77 is 25471.
*   Its COSPAR ID is 1998-051E.
*   It is also associated with the Freebase ID /m/01028h74.
*   Its Wolfram Language entity code is Entity["Satellite", "25471"].

### Related Entities
*   Iridium 77 is related to the Iridium satellite constellation.
*   It is also related to the Delta II launch system.

## References

1. Jonathan's Space Report