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GRUS 1A, 1B, 1C / Fukui Prefectural Satellite


GRUS is a constellation of three 80 kg Earth observation micro-satellites developed by Axelspace. They are equipped with high-performance optical telescopes, which enable them to take images with 2.5 m ground resolution and over 50 km swath.

GRUS can obtain panchromatic images (having sensitivity in all bands from visible to near infrared and normally expressed in grayscale format) and multi-spectral images (having sensitivity only in a specific band; blue, green, red, red edge and near infrared respectively). The ground resolution is 2.5 m for panchromatic images, 5.0 m for multi-spectral images.

GRUS satellites are equipped with high-performance telescopes with cutting-edge image sensors and the swath of its image spans over 50 km to realize efficient covering of the entire globe. By launching many GRUS satellites, it enables to update every information around the globe every day, and to apply those data to various industries including agriculture, forestry, fishery, mapping, GIS and disaster monitoring.

The three first-generation GRUS satellites were to be launched in 2018, with more satellites planned to follow to form the AxelGlobe constellation. The satellites were manifested to fly with Kanopus-V 3 and 4 on a Soyuz-2-1a Fregat-M, but were replaced by mass models on the actual launch. GRUS 1A will now launch with Kanopus-V 5 and 6 on a Soyuz-2-1a Fregat-M. GRUS 1B and 1C will follow in 2020. A fourth satellite built for FSTRA, the Fukui Prefectural Satellite, is identical and will operate together with the three AXELSPACE owned satellites.

Nation: Japan
Type / Application: Earth observation
Operator: AXELSPACE (GRUS); FSTRA (Fukui Prefectural Satellite)
Contractors: AXELSPACE
Propulsion: None
Power: Solar cells, batteries
Lifetime: > 5 years
Mass: 80 kg
Orbit: 600 km SSO
Satellite COSPAR Date LS Launch Vehicle Remarks
GRUS 1A 2018-111Q 27.12.2018 Vo LC-1S Soyuz-2-1a Fregat-M with Kanopus-V 5, Kanopus-V 6, GRUS 1A, Flock-3k 1, ..., 12, Lemur-2 88, ..., 95, D-Star ONE iSat, D-Star ONE Sparrow, ZACUBE 2, Lume 1, UWE 4, Dummy, SAMSON-Dummy 1, 2, 3
GRUS 1B - 2020 Ba Soyuz-2-1a Fregat-M or Soyuz-2-1b Fregat-M with ?, GRUS 3, Fukui Prefectural Satellite
GRUS 1C - 2020 Ba Soyuz-2-1a Fregat-M or Soyuz-2-1b Fregat-M with ?, GRUS 1B, Fukui Prefectural Satellite
Fukui Prefectural Satellite - 2020 Ba Soyuz-2-1a Fregat-M or Soyuz-2-1b Fregat-M with ?, GRUS 1B, GRUS 1C