cosmos.wikisort.org - Spacecraft

OSSI-1 (standing for Open Source Satellite Initiative-1) is an amateur radio satellite launched in 2013 with Bion-M No.1. Bion-M was launched into orbit at 10:00 UTC on April 19, 2013, from Baikonur Cosmodrome, Kazakhstan, with 6 small satellites, including OSSI-1. OSSI-1 detached from Bion-M at 16:15 UTC.[1][4]

OSSI-1

Mission type	Research/amateur radio
COSPAR ID	2013-015B[1]
SATCAT no.	39131[1]
Website	http://opensat.cc/ (archived)
Spacecraft properties
Spacecraft type	1U CubeSat
Manufacturer	Home made
Launch mass	950g [2]
Dimensions	10 centimetres (3.9 in) cube
Start of mission
Launch date	19 April 2013, 10:00 (2013-04-19UTC10Z) UTC
Rocket	Soyuz 2-1a
Launch site	Baikonur 31/6
Contractor	Roskosmos
End of mission
Decay date	30 June 2013
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Semi-major axis	6,778 kilometres (4,212 mi)[3]
Perigee altitude	263.0 kilometres (163.4 mi)[3]
Apogee altitude	552.8 kilometres (343.5 mi)[3]
Inclination	64.9 degrees[3]
Period	92.6 minutes[3]
Epoch	14 May 2013[3]

OSSI-1 is the pet project of Hojun Song, a Korean artist and amateur radio operator. He worked on it for seven years, designing and building the satellite using off-the-shelf components rather than equipment that had been certified for use in space.[4] The most expensive aspect of the project was the launch, which cost US$100,000.[4][5][6]

OSSI-1 is a 1U CubeSat with 100mm sides, weighing 950g.[2][7] It uses an arduino microcontroller, a lithium-ion battery and a J mode UHF/VHF transceiver.[7]

The satellite has a Morse code beacon transmitting "OS0 DE OSSI1 ANYOUNG" on 145.980 MHz and 4 LED lights with a total power of 44 watts to flash Morse code messages, using an open protocol. The project developers announced on 24 April 2013 that they had not yet received a signal from the satellite and were concerned that the Two-line element set they were using to locate the satellite might be wrong.[4][7][8][9]

According to Korean amateur radio organisation KARL, Hojun Song had some difficulties launching a satellite as a private individual, connected to registering with space bodies and being allocated broadcast frequencies by the international telecoms regulator the ITU. A law requires knowledge of the launch date two years in advance which he was not able to give as he was sharing a launch with other experimental satellites. The amateur radio bands are nearly full but to use other bands would require more expensive specialist equipment and technical skills.[9] In 2011 OSSI-1 signed a contract with a French nano satellite company for a turnkey launch service in order to secure a launch date.[10]

The satellite re-entered the Earth's atmosphere on 30 June 2013. Source code for the satellite is available on GitHub.[11]

References

External links

• opensat.cc website (archived)
• GitHub: ossicode

На других языках

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[de] OSSI 1

OSSI 1 (Open Source Satellite Initiative) war ein südkoreanischer Amateurfunksatellit.

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- [en] OSSI-1

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