# Umbra 04

> American synthetic aperture radar satellite

**Wikidata**: [Q121841948](https://www.wikidata.org/wiki/Q121841948)  
**Source**: https://4ort.xyz/entity/umbra-04

## Summary
Umbra 04 is an American synthetic aperture radar (SAR) satellite launched in 2023 as part of the Umbra-SAR constellation. Operated by Umbra, it provides high-resolution radar imaging capabilities for Earth observation.

## Key Facts
- **Type**: Synthetic aperture radar (SAR) satellite
- **Operator**: Umbra
- **Launch Date**: January 3, 2023, at 14:55:56 UTC
- **Launch Vehicle**: Falcon 9 Block 5 (Booster B1060.15)
- **Launch Site**: Cape Canaveral Space Launch Complex 40
- **Mass**: 65 kg (launch weight)
- **Country**: United States
- **Preceded By**: Umbra 03
- **Followed By**: Umbra 05
- **Identifiers**:
  - COSPAR ID: 2023-001AT
  - NSSDCA ID: 2023001AT
  - SCN: 55050

## FAQs
### Q: What is Umbra 04?
A: Umbra 04 is a synthetic aperture radar satellite operated by Umbra, launched in 2023 to provide high-resolution radar imaging for Earth observation.

### Q: When was Umbra 04 launched?
A: Umbra 04 was launched on January 3, 2023, at 14:55:56 UTC.

### Q: What rocket launched Umbra 04?
A: It was launched aboard a SpaceX Falcon 9 Block 5 rocket (Booster B1060.15) from Cape Canaveral Space Launch Complex 40.

### Q: What is the mass of Umbra 04?
A: The satellite has a launch mass of 65 kg.

### Q: What is the purpose of Umbra 04?
A: As part of the Umbra-SAR constellation, it provides synthetic aperture radar imaging for applications such as surveillance, environmental monitoring, and disaster response.

## Why It Matters
Umbra 04 contributes to the growing field of commercial synthetic aperture radar (SAR) satellites, which provide all-weather, day-and-night Earth imaging capabilities. Unlike optical satellites, SAR satellites can penetrate clouds and darkness, making them invaluable for defense, agriculture, and climate monitoring. Umbra's constellation aims to deliver high-resolution radar data, enhancing global situational awareness and supporting applications like infrastructure monitoring, maritime surveillance, and disaster assessment. Its launch reflects the increasing role of private companies in space-based remote sensing, offering more accessible and frequent data for both government and commercial users.

## Notable For
- **High-Resolution SAR Imaging**: Part of a constellation designed to deliver detailed radar imagery.
- **Lightweight Design**: Weighs only 65 kg, demonstrating advancements in small satellite technology.
- **Commercial Operation**: Operated by Umbra, a private company expanding commercial SAR capabilities.
- **Rapid Deployment**: Launched as part of a growing constellation, enabling frequent revisits and data updates.
- **Falcon 9 Launch**: Utilized SpaceX’s reusable Falcon 9 Block 5, showcasing cost-effective access to space.

## Body
### Overview
Umbra 04 is a synthetic aperture radar (SAR) satellite developed and operated by Umbra, an American aerospace company. It is part of the Umbra-SAR constellation, which aims to provide high-resolution radar imaging services for various applications, including defense, environmental monitoring, and disaster response.

### Launch Details
- **Date and Time**: January 3, 2023, at 14:55:56 UTC.
- **Launch Vehicle**: SpaceX Falcon 9 Block 5 (Booster B1060.15).
- **Launch Site**: Cape Canaveral Space Launch Complex 40 (SLC-40).
- **Orbit**: Low Earth Orbit (specific altitude not provided in source material).

### Technical Specifications
- **Mass**: 65 kg (launch weight).
- **Type**: Synthetic aperture radar satellite.
- **Operator**: Umbra.
- **Manufacturer**: Umbra.

### Mission and Capabilities
Umbra 04 is designed to capture high-resolution radar images of the Earth's surface. SAR technology allows the satellite to operate independently of weather conditions or daylight, making it useful for continuous monitoring. The satellite is part of a broader constellation, enabling frequent revisits and data collection over areas of interest.

### Identifiers
- **COSPAR ID**: 2023-001AT.
- **NSSDCA ID**: 2023001AT.
- **Satellite Catalog Number (SCN)**: 55050.

### Relationship to Other Satellites
- **Preceded By**: Umbra 03.
- **Followed By**: Umbra 05.
- **Part of**: Umbra-SAR constellation.

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Umbra 04",
  "description": "American synthetic aperture radar satellite launched in 2023 as part of the Umbra-SAR constellation.",
  "sameAs": ["https://www.wikidata.org/wiki/Q6272367"],
  "additionalType": "SyntheticApertureRadarSatellite"
}

## References

1. [Source](https://space.skyrocket.de/doc_sdat/umbra-sar-2001.htm)
2. Jonathan's Space Report