Optical Inter-orbit Communications Engineering Test Satellite
NamesOICETS, Kirari
Mission typeTechnology demonstration
COSPAR ID2005-031A Edit this at Wikidata
SATCAT no.28809
Mission durationPlanned: 1 year
Final: 4 years, 1 month
Spacecraft properties
Launch mass570 kg (1,260 lb)
Dimensions0.78 × 1.1 × 1.5 m (2.6 × 3.6 × 4.9 ft)
Start of mission
Launch date23 August 2005, 21:10 (2005-08-23UTC21:10) UTC[1]
Launch siteBaikonur Pad 109/95[2]
End of mission
Deactivated24 September 2009, 05:48 (2009-09-24UTC05:49) UTC[3]
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude597 km (371 mi)
Apogee altitude612 km (380 mi)
Period96.8 minutes
Epoch23 August 2005, 17:10:00 UTC[1]

The Optical Inter-orbit Communications Engineering Test Satellite (OICETS), also called Kirari, was an experimental satellite launched by JAXA to demonstrate interorbital communication between satellites through optical (laser) means. OICETS was originally slated for a launch on the second J-I launcher. Due to problems with that launcher, the launch had to be put on hold. Using the H-IIA was out of question: it would have been overkill to use the H-IIA to send a 570 kilograms (1,260 lb) satellite into low Earth orbit, and there was no budget for another H-IIA launch. Finally, in order to be able to perform the tests during the lifetime of the European Artemis satellite (since 2014, sold to Avanti Communications to exploit its Ka, S, and L-band payloads), OICETS was successfully launched on an SS-18-based Dnepr rocket.

The satellite was decommissioned and its mission terminated on 24 September 2009 at 05:48 UTC.[3]



  1. ^ a b "OICETS - Trajectory Details". National Space Science Data Center. NASA. Retrieved 7 January 2017.
  2. ^ a b "Kirari". Encyclopedia Astronautica. Archived from the original on 21 December 2016. Retrieved 7 January 2017.
  3. ^ a b "Kirari: Signals stopped; successful operation ends". JAXA. 24 September 2009. Retrieved 7 January 2017.