GOSAT 2

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GOSAT 2
Type: Earth observation satellite
Country: JapanJapan Japan
Operator: Japan Aerospace Exploration AgencyJAXA JAXA
COSPAR-ID : 2018-084B
Mission dates
Dimensions: 1800 kg
Size: 5.3 × 2.0 × 2.1 m (span 16.5 m)
Begin: October 29, 2018 at 4:08 am UTC
Starting place: Tanegashima Space Center , Yoshinobu Launch Complex
Launcher: H-2A F-40
Orbit data
Rotation time : 97.0 min
Orbit inclination : 97.84 °
Apogee height :  624 km
Perigee height :  622 km

GOSAT 2 (Ibuki 2, Greenhouse Gases Observing Satellite 2) is an earth observation satellite of the Japanese JAXA . The satellite is a joint project of JAXA, the Japanese Ministry of the Environment and the national institute for environmental studies as well as Mitsubishi Electric as manufacturer. After launch, it was renamed Ibuki 2. It is the successor to the GOSAT satellite, which has been operating in space since 2009 .

It was launched into sun-synchronous orbit on October 29, 2018 at 04:08 UTC by an H-2A launcher from the Tanegashima Space Center . Together with the satellite, the satellite KhalifaSat (330 kg earth observation satellite of the United Arab Emirates with a resolution of 70 cm), Diwata-2b (56 kg heavy Philippine earth observation satellite), PROITERES-2 (technology testing satellite), AUTcube-2 (1, 6 kg satellite for technology testing , research and earth observation), Stars-AO (1.4 kg astronomy satellite), Ten-Koh (23 kg materials research satellite) brought into space.

The three-axis stabilized satellite is equipped with two instruments (TANSO-FTS-2 and TANSO-CAI-2) and is intended to provide data on the regional distribution of greenhouse gases such as carbon dioxide and methane . In addition, it should be used for the analysis of forest and mine fires, the detection of strong carbon monoxide and carbon dioxide point sources such as industrial centers and the observation of ocean currents. He records the same area of ​​the earth every three days. It was built by Mitsubishi Electric and has a planned service life of 5 years.

technology

TANSO-FTS-2 (Thermal and Near-infrared Sensor for Carbon Observation-Fourier Transform Spectrometer-2) is a 5-band interferometer (three bands in the near infrared and two in the thermal infrared) that can simultaneously determine the polarization in different planes and built by Harris Corporation based on their Cross-track Infrared Sounder (CrIS) technology. It should determine the distribution of greenhouse gases. Volume 1 (0.755 - 0.772 µm) is used to determine the oxygen content, Volume 2 (1.563 - 1.695 µm) is used to determine carbon dioxide and methane, Volume 3 (1.923 - 2.381) is used to determine carbon dioxide, air humidity and carbon monoxide, Volume 4 (5th , 56 - 8.45) of methane and humidity and Volume 5 (8.45 - 14.29 µm) of the determination of carbon dioxide and the temperature profile of the atmosphere. The sensor is able to detect carbon dioxide concentrations up to 0.5 ppm and methane concentrations up to 5 ppm. With the help of cameras, the sensor is aligned in such a way that cloud-free areas are examined.

TANSO-CAI-2 (Thermal And Near infrared Sensor for Carbon Observations - Cloud and Aerosol Imager - 2) consists of a multi-channel radiometer (0.3 to 1.7 µm) with a resolution of up to 500 m and a swath width of 1000 km to visually observe the aerosols and clouds. The instrument simultaneously records a strip 20 ° in front of and behind the direction of flight of the satellite.

Web links

Individual evidence

  1. ↑ NIES: | GOSAT-2 Project Site, Satellite Observation Center, NIES, Japan , accessed January 6, 2019
  2. ↑ Orbit data according to GOSAT 2. N2YO, January 6, 2019, accessed on January 6, 2019 (English).
  3. ↑ a b NASASpaceFlight.com: Japanese H-IIA launches GOSAT-2 Earth Observation Satellite launch - NASASpaceFlight.com , accessed January 6, 2019
  4. ↑ Technology Review: Post from Japan: On the trail of greenhouse gases | Technology Review , accessed January 6, 2019
  5. ↑ a b eoPortal Directory: GOSAT-2 - Satellite Missions - eoPortal Directory , accessed on January 6, 2019
  6. ↑ spiedigitallibrary.org: Fourier transform spectrometer on GOSAT and GOSAT-2 , accessed on January 6, 2019
  7. ↑ Harris: TANSO FTS 2 Greenhouse Gas Observing Satellite-2 Payload | Harris , accessed January 6, 2019