# GOSAT-2 (Greenhouse gases Observing Satellite 2 / Ibuki-2)
*missions*

JAXA greenhouse gas successor satellite launched October 2018; carries TANSO-FTS-2 with improved spectral resolution; SIF retrieval capability at O2-A band (757-771 nm) demonstrated.

## Specifications
- **operator**: jaxa
- **current status**: operational
- **actual launch**: 2018-10-29
- **orbit type**: LEO SSO 613 km
- **tasking supported**: false
- **swath km**: 1300
- **revisit days**: 6
- **launch vehicle**: jaxa-h-iia
- **entity type**: mission
- **last verified date**: 2026-06-11
- **verified by**: agency-doc
- **claim status**: unclaimed
- **provider**: jaxa
- **attributes**: {"operator":"jaxa","current_status":"operational","actual_launch":"2018-10-29","orbit_type":"LEO SSO 613 km","tasking_supported":false,"summary":"JAXA greenhouse gas successor satellite launched October 2018; carries TANSO-FTS-2 with improved spectral resolution; SIF retrieval capability at O2-A band (757-771 nm) demonstrated.","swath_km":1300,"revisit_days":6,"launch_vehicle":"jaxa-h-iia"}
- **relevance**: in-scope

## Editorial
GOSAT-2 (Greenhouse gases Observing Satellite 2), also known as Ibuki-2, is the successor to GOSAT, developed jointly by JAXA, the Ministry of the Environment of Japan, and NIES. Launched on 29 October 2018 into a sun-synchronous orbit at 613 km altitude, the mission continues the GOSAT greenhouse gas record; its TANSO-FTS-2 adds a fifth band and intelligent cloud-avoidance pointing, with a 6-day revisit cycle over a 1,300 km swath.[^eoportal-gosat2][^gosat2-nies]

The primary instrument is TANSO-FTS-2, a five-band Fourier Transform Spectrometer spanning 0.755 to 14.29 micrometres with 0.2 wavenumber per centimetre spectral resolution and an intelligent pointing system for cloud avoidance. An O2-A band sun-induced fluorescence (SIF) retrieval capability has been demonstrated from TANSO-FTS-2 data. The secondary instrument is TANSO-CAI-2, a pushbroom aerosol and cloud imager operating from 0.333 to 1.675 micrometres with a 1,000 km swath.[^eoportal-gosat2][^esa-gosat2-catalog]

GOSAT-2 has experienced recurring short data-delivery suspensions associated with lunar calibration and diagnostic mode events; each suspension has been resolved and normal operations resumed within days to weeks. Data are distributed through JAXA EORC and the NIES GOSAT-2 project site.[^gosat2-nies][^moe-japan-gosat]

## Compositional position
- GOSAT-2 (Greenhouse gases Observing Satellite 2 / Ibuki-2) --[related-topic]--> greenhouse-gas-flux (topics)
- GOSAT-2 (Greenhouse gases Observing Satellite 2 / Ibuki-2) --[related-topic]--> co2 (topics)
- GOSAT-2 (Greenhouse gases Observing Satellite 2 / Ibuki-2) --[related-topic]--> methane (topics)

## Sources
- [eoportal-gosat2] | GOSAT-2 (Greenhouse gases Observing Satellite-2 / Ibuki-2) - eoPortal | https://www.eoportal.org/satellite-missions/gosat-2 | tier=community | accessed=2026-06-11
- [gosat2-nies] | GOSAT-2 Project Site - NIES | https://www.gosat-2.nies.go.jp/ | tier=agency-doc | accessed=2026-06-11
- [esa-gosat2-catalog] | GOSAT-2 TANSO FTS-2 and CAI-2 full archive - ESA Earth Online | https://earth.esa.int/eogateway/catalog/gosat-2-tanso-fts-2-and-cai-2-full-archive-and-new-products | tier=agency-doc | accessed=2026-06-11
- [moe-japan-gosat] | Earth observations using GOSAT series - Ministry of the Environment Japan | https://www.env.go.jp/en/earth/cc/gosat.html | tier=agency-doc | accessed=2026-06-11

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Source: https://eo-atlas.org/missions/gosat-2
Maintainer: SpectraWorks B.V. (CC-BY 4.0)