Drift Orbit Injection Result of the Engineering Test Satellite VIII KIKU No. 8

Status Report From: Japan Aerospace Exploration Agency (JAXA)
Posted: Wednesday, December 27, 2006


JAXA has performed the apogee engine firing four times for the Engineering Test Satellite VIII "KIKU No. 8" to ultimately inject itself into the drift orbit since its injection into the first transfer orbit on Dec. 18, 2006 (Japan Standard Time, JST) till Dec. 24.

As a result of the orbit determination after the fourth apogee engine firing, we have confirmed that the "KIKU No. 8" was injected into the scheduled drift orbit.
                   Determination result     Scheduled value 

Apogee Altitude      35,971 Km                35,975 Km 
Perigee Altitude     35,752 Km                35,784 Km 
Inclination          0.17 degrees             0.17 degrees 
Period               23 hours 59 minutes      24 hours 00 minute 
Drift rate           0.97 degrees per day     1.22 degrees per day
                     (to the West)            (to the West) 

The satellite is in good condition.

JAXA will deploy the two large deployable antennas around 5:00 p.m. on Dec. 25, 2006 (JST.) It is expected to take about seven hours. We plan to issue the deployment result of the large deployable antennas at around 3:00 a.m. on Dec. 26.

(Note) Drift rate: velocity of the satellite moving toward the longitudedirection from the Earth.

Large Deployable Antenna Reflector: 19 m x 17 m high accuracy mirror surfaced mesh antenna for S-band.

Transfer orbit: a temporary orbit where a satellite is injected into by a launch vehicle before it moves into its target Geostationary orbit.

Drift orbit: a circular orbit at the altitude of about 36,000 km that is the last step before a satellite is injected into its target Geostationary orbit.

Attachment: Flight Plan of the "KIKU No. 8"

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