# Intruder 13

> American military ocean surveillance and SIGINT satellite

**Wikidata**: [Q136169336](https://www.wikidata.org/wiki/Q136169336)  
**Source**: https://4ort.xyz/entity/intruder-13

## Summary
Intruder 13 is an American military signals intelligence (SIGINT) satellite designed for ocean surveillance, part of the Naval Ocean Surveillance System (NOSS). Launched on October 8, 2015, it was built by Lockheed Martin Space and operated by the U.S. Navy. It follows the Intruder 12 satellite and is preceded by Intruder 14 in the series.

## Key Facts
- **Type**: Signals intelligence satellite for ocean surveillance
- **Operator**: United States Navy
- **Launch Date**: October 8, 2015, at 12:49 UTC
- **Launch Vehicle**: Atlas V 401 (AV-058)
- **Launch Site**: Vandenberg Space Launch Complex 3 East
- **Orbit**: Low Earth orbit
- **Mass**: Approximately 3,250 kilograms
- **Manufacturer**: Lockheed Martin Space
- **Power Source**: Spacecraft solar array
- **Part of Series**: Naval Ocean Surveillance System (NOSS)
- **Predecessor**: Intruder 12
- **Successor**: Intruder 14
- **COSPAR ID**: 2015-058A
- **Aliases**: NOSS-3 7A, Intruder 11A, USA-264-1

## FAQs
### Q: What was the purpose of Intruder 13?
A: Intruder 13 was a military signals intelligence (SIGINT) satellite designed for ocean surveillance, part of the U.S. Navy's Naval Ocean Surveillance System (NOSS).

### Q: Who operated Intruder 13?
A: The satellite was operated by the United States Navy.

### Q: What was the launch date of Intruder 13?
A: Intruder 13 was launched on October 8, 2015, at 12:49 UTC.

### Q: What was the launch vehicle for Intruder 13?
A: The satellite was launched using an Atlas V 401 rocket (AV-058).

### Q: What is the mass of Intruder 13?
A: Intruder 13 had an approximate mass of 3,250 kilograms.

## Why It Matters
Intruder 13 played a crucial role in the U.S. Navy's Naval Ocean Surveillance System (NOSS), which is designed to monitor maritime communications and support national security. As a SIGINT satellite, it contributed to the collection of electronic intelligence, including signals from ships, submarines, and aircraft, to enhance situational awareness and strategic decision-making. Its deployment was part of a broader effort to maintain a robust surveillance capability in low Earth orbit. The satellite's successful operation underscored the importance of space-based intelligence gathering in modern military operations.

## Notable For
- **Part of a Series**: Intruder 13 was part of the Naval Ocean Surveillance System (NOSS), a series of U.S. Navy satellites for ocean surveillance.
- **Precise Launch**: The satellite was launched on October 8, 2015, at 12:49 UTC, demonstrating the precision required for military space operations.
- **Solar-Powered**: Intruder 13 was equipped with a spacecraft solar array, ensuring continuous power for its missions.
- **Low Earth Orbit**: Its placement in low Earth orbit allowed for effective monitoring of maritime communications.
- **Military Collaboration**: The satellite was a product of collaboration between Lockheed Martin Space and the U.S. Navy, highlighting the integration of commercial and military space technologies.

## Body
### Overview
Intruder 13 was a signals intelligence (SIGINT) satellite developed for the U.S. Navy as part of the Naval Ocean Surveillance System (NOSS). It was designed to monitor maritime communications and support national security efforts.

### Technical Specifications
- **Mass**: Approximately 3,250 kilograms.
- **Power Source**: Spacecraft solar array.
- **Orbit**: Low Earth orbit.
- **Launch Vehicle**: Atlas V 401 (AV-058).
- **Launch Site**: Vandenberg Space Launch Complex 3 East.

### Operational Details
- **Launch Date**: October 8, 2015, at 12:49 UTC.
- **Operator**: United States Navy.
- **Manufacturer**: Lockheed Martin Space.
- **COSPAR ID**: 2015-058A.

### Series Context
- **Predecessor**: Intruder 12.
- **Successor**: Intruder 14.
- **Part of**: Naval Ocean Surveillance System (NOSS).

### Significance
Intruder 13 was significant for its role in maintaining the U.S. Navy's maritime surveillance capabilities. It contributed to the collection of electronic intelligence, supporting strategic decision-making and national security.

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  "predecessor": "Intruder 12",
  "successor": "Intruder 14"
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## References

1. [Source](https://space.skyrocket.de/doc_sdat/noss-3.htm)
2. Jonathan's Space Report