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KySat 2, 3 (SGSat)

KySat 2 [Kentucky Space]

KySat-2 is a cube shaped picosat-class CubeSat satellite powered by solar energy, weighs 1 kg and measures 10 cm on a side.

KySat-2 was built by Kentucky Space, a consortium consisting of University of Kentucky and Morehead State University.

KySat-2 will leverage design philosophies of Space Plug-and-Play Avionics (SPA) protocol with SSL co-developing SPA-1 (I2C) protocol for the Trailblazer CubeSat mission.

KySat-2 will also test a Stellar Gyroscope, which consists of a single five megapixel camera and a Beagleboard-xM single-board Linux computer. The stellar gyroscope works by starting with two pictures of star fields. First, the brightest stars in the pictures are identified by filtering noise and applying a brightness threshold. Next, an algorithm called Random Sample Consensus (RANSAC) is applied to determine a proposed rotation matrix between the images. RANSAC works by comparing a random set of the brightest stars in both images, then calculating a rotation matrix between those stars, then testing that rotation matrix against the stars that weren’t randomly chosen. If a threshold percentage of the remaining stars in the first image match up to stars in the second image using that rotation matrix, then the test is completed and the stellar gyroscope reports the rotation matrix as the attitude propagation of the spacecraft.

It was launched on the ELaNa-4 mission. All subsystems were verified as operational on that mission; however, uplink problems at the ground stations and suspected radiation damage prevented the team from validating the stellar gyroscope.

A reflight of the mission as KySat-3 or SGSat is planned for 2016. The satellite was deployed on 16 May 2017 from the ISS.

Nation: USA
Type / Application: Technology
Operator: Kentucky Space
Contractors: Kentucky Space
Equipment: Stellar gyroscope
Configuration: CubeSat (1U)
Propulsion: None
Power: Solar cells, batteries
Mass: 1 kg
Orbit: 496 km × 504 km, 40.53° (#2); 401 km × 404 km, 51.64° (#3)
Satellite COSPAR Date LS Launch Vehicle Remarks
KySat 2 2013-064E 20.11.2013 WI LA-0B Minotaur-1 with STPSat 3, ORS 3, ORSES, ORS Tech 1, ORS Tech 2, SENSE 1, SENSE 2, Ho`oponopono 2, Firefly, STARE B, Prometheus 1.1, ..., 1.8, Black Knight 1, NPS-SCAT, COPPER, ChargerSat 1, TJ3Sat, Trailblazer 1, Vermont Lunar Cubesat, SwampSat, CAPE 2, DragonSat 1, PhoneSat v2.4
KySat 3 (SGSat) 1998-067LL 18.04.2017 CC SLC-41 Atlas-5(401) with ALTAIR 1, SUSat, UNSW-EC0, i-INSPIRE 2, ZA-AeroSat, nSIGHT 1, Ex-Alta 1, LilacSat 1, NJUST 1, Aoxiang 1, SOMP 2, QBITO, Aalto 2, X-CubeSat, SpaceCube, DUTHSat, UPSat, Hoopoe, LINK, SNUSAT 1, SNUSAT 1b, qbee50-LTU-OC, BeEagleSat, HAVELSAT, Phoenix, PolyITAN-2-SAU, QBUS 1, QBUS 2, QBUS 4, IceCube, CSUNSat 1, CXBN 2, SHARC, Lemur-2 30, ..., 33
Further KySat missions:

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