# Kounotori 4

> cargo resupply spacecraft for the International Space Station

**Wikidata**: [Q14468029](https://www.wikidata.org/wiki/Q14468029)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kounotori_4)  
**Source**: https://4ort.xyz/entity/kounotori-4

## Summary
Kounotori 4 (HTV-4) was a Japanese automated cargo spacecraft that delivered supplies to the International Space Station in 2013. It was the fourth flight of the H-II Transfer Vehicle class, operated by the Japan Aerospace Exploration Agency.

## Key Facts
- Launched on 3 August 2013 at 19:48:46 UTC from Yoshinobu Launch Complex Launch Pad 2
- Docked with the ISS Harmony module from 9 August 2013 to 4 September 2013
- Mission duration: 3,024,000 seconds (approximately 35 days)
- Launch vehicle: H-IIB-F4 rocket
- COSPAR ID: 2013-040A
- Spacecraft number: 39221
- Preceded by Kounotori 3, followed by Kounotori 5
- Also known as HTV-4, 고노토리 4호기, and 코노토리 4호기

## FAQs
### Q: When did Kounotori 4 launch and dock with the ISS?
A: Kounotori 4 launched on 3 August 2013 and docked with the ISS Harmony module on 9 August 2013, remaining attached until 4 September 2013.

### Q: What type of spacecraft was Kounotori 4?
A: Kounotori 4 was an H-II Transfer Vehicle, an automated cargo spacecraft designed to deliver supplies to the International Space Station.

### Q: Which agency operated Kounotori 4?
A: The Japan Aerospace Exploration Agency (JAXA) operated Kounotori 4.

## Why It Matters
Kounotori 4 represented Japan's continued commitment to supporting the International Space Station program through its fleet of automated cargo vehicles. As part of the H-II Transfer Vehicle series, it played a crucial role in maintaining the ISS by delivering essential supplies, equipment, and scientific experiments. The successful mission demonstrated the reliability of Japan's space logistics capabilities and strengthened international cooperation in space exploration. These cargo missions are vital for ISS operations, as they deliver everything from food and water to scientific payloads and replacement parts, enabling the station to maintain its continuous human presence in space.

## Notable For
- Fourth mission in the H-II Transfer Vehicle series
- Part of Japan's contribution to ISS resupply operations
- Used the H-IIB launch vehicle specifically designed for HTV missions
- Maintained the regular cadence of Japanese cargo missions to the ISS

## Body
### Mission Overview
Kounotori 4, designated HTV-4, was Japan's fourth automated cargo spacecraft mission to the International Space Station. The spacecraft was part of the H-II Transfer Vehicle program operated by the Japan Aerospace Exploration Agency.

### Launch and Flight
The spacecraft launched on 3 August 2013 at 19:48:46 UTC from the Yoshinobu Launch Complex Launch Pad 2 in Japan. It was carried into orbit by the H-IIB-F4 rocket, a launch vehicle specifically designed for HTV missions.

### ISS Operations
Kounotori 4 successfully docked with the Harmony module of the ISS on 9 August 2013. The spacecraft remained attached to the station until 4 September 2013, providing a 26-day window for cargo operations. During this time, ISS crew members unloaded supplies and equipment from the spacecraft.

### Technical Specifications
The mission had a total duration of 3,024,000 seconds from launch to completion. The spacecraft was assigned the COSPAR ID 2013-040A for tracking and identification purposes. It was the fourth spacecraft in the series, following Kounotori 3 and preceding Kounotori 5.

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Kounotori 4",
  "description": "Japanese automated cargo spacecraft that delivered supplies to the International Space Station in 2013",
  "sameAs": ["https://www.wikidata.org/wiki/Q13462620", "https://en.wikipedia.org/wiki/Kounotori_4"],
  "additionalType": "H-II Transfer Vehicle"
}

## References

1. Jonathan's Space Report
2. Freebase Data Dumps. 2013