Satellites and Spacecraft Experimental Geodetic Satellite "AJISAI" (EGS)

In Operation

Project Topics

May 26, 2011 Updated

AJISAI received the Tsuboi Prize of the Geodetic Society of Japan (Group Prize)

AJISAI received the Tsuboi Prize of the Geodetic Society of Japan (Group Prize)

The 25-year operation and precious observation data of the Experimental Geodetic Satellite "AJISAI" (EGS) was highly evaluated by the Geodetic Society of Japan, and, on May 23, 2011, the Tsuboi Prize (Group Prize) was awarded to a group led by former space verification team project manager Eiichi Hashimoto. The group consists of JAXA, the National Institute of Information and Communications Technology (NICT), the Japan Coast Guard (JCG), Geospatial Information Authority of Japan (GSI), and Hit...

About Experimental Geodetic Satellite "AJISAI" (EGS)

To establish Japan’s geodetic origin through accurate land surveying from space.

The primary short-range objective for AJISAI (EGS) was testing of NASDA's H-I'(2-stage) launch vehicle. Long-range applications included a survery aimed at rectifying Japan's demestic geodetic triangular net - determining the exact position of many isolated Japanese islands and establishing Japan's geodetic point of origin.
The survey was conducted by the Geographical Survey Institute of the Ministry of Construction and the Hydrography Department of the Maritime Safety Agency, Ministry of Transport.

Lauch date: August 13, 1986

Characteristics of Experimental Geodetic Satellite "AJISAI" (EGS)

Major Characteristics

International Designation Code 1986-061A
Launch Date 05:45, August 13, 1986 (JST)
Launch Vehicle H-I Launch Vehicle No.1(H15F)
Location Tanegashima Space Center
Shape 215cm(D) sphere with solar ray and laser beam reflectors.
Weight Approx. 685kg
Orbiter circular
Altitude Approx. 1500km
Inclination Approx. 50 deg
Period Approx. 116 minutes
Attitude Control Spin-stabilization