Kodama

Japan

Spacecraft n°:

Japanese satellite n°: 105

Also called DRTS (Data Relay Test Satellite)

Launch data:

Designation	27516 / 02042B
Launch date	10 Sep 2002 - 08:20 UT
Launch site	Tanegashima
Launch vehicle	H-2A (2024) (#10)
Mission	Government: Technology Development
Geostationary orbit on:
Perigee / Apogee	35775 x 35799 km
Eccentricity	2.85E-04
Inclination	0.02 deg
Period	1436.12 min

Became operational on 10 Jan 2003.

Specifications

Prime contractor	Mitsubishi Electric (Melco)
Platform	DS-2000
Operator	National Space Development Agency
Mass at launch	2650 kg
Dry mass	1500 kg
Dimension	2.2 x 2.4 x 2.2 m
Solar array	2.4 x 7.3 m
Stabilization	3-axis
DC power	EOL: 2100 W
Design lifetime	7 years - still active

Location:

Date	Position	Remarks
	90° E
April 2010	90.77° E

Mission details:

Develop more advanced data relay by improving the technology for the Communications and Broadcasting Engineering Satellite (COMETS).

The satellite failed to enter GTO right after launch because of a failure of the bipropellant apogee engine; the third firing was incomplete. It reached GEO a few days later.

The relay payload is working, was able to relay realtime data from Adeos 2.
Should operate in S- and Ka-band for inter satellite links and in Ka-band with the ground stations

Inter satellite link antenna: 3.6 m diameter; feeder link antenna: 1.8 m diameter

Ref: #7, #15, #226 - update: 18.05.10