OSSI-1

Last updated
OSSI-1
Mission typeResearch/amateur radio
COSPAR ID 2013-015B [1]
SATCAT no. 39131 [1]
Website http://opensat.cc/ (archived)
Spacecraft properties
Spacecraft type1U CubeSat
ManufacturerHome made
Launch mass950g [2]
Dimensions10 centimetres (3.9 in) cube
Start of mission
Launch date19 April 2013, 10:00 (2013-04-19UTC10Z) UTC
Rocket Soyuz 2-1a
Launch site Baikonur 31/6
Contractor Roskosmos
End of mission
Decay date30 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 (standing for Open Source Satellite Initiative-1) was 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 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 was 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 had 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]

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References

  1. 1 2 3 "2013-015". Zarya.Info. Archived from the original on 22 October 2013. Retrieved 14 May 2013.
  2. 1 2 "OSSI-1". National Space Science Data Centre. Archived from the original on 4 June 2023. Retrieved 14 May 2013.
  3. 1 2 3 4 5 6 "OSSI 1". REAL TIME SATELLITE TRACKING. Archived from the original on 4 March 2016. Retrieved 14 May 2013.
  4. 1 2 3 4 "OSSI-1". Amsat.uk. 12 March 2013. Archived from the original on 16 June 2013. Retrieved 14 May 2013.
  5. ↑ "South Korean artist has high hopes for his homemade satellite". BBC News. 27 July 2012. Archived from the original on 30 May 2013. Retrieved 14 May 2013.
  6. ↑ "Alpha Geek: Hojun Song, DIY Satellite Builder". Wired. 30 August 2010. Archived from the original on 15 May 2013. Retrieved 14 May 2013.
  7. 1 2 3 "Open Source Satellite Initiative". OSSI. Archived from the original on 11 January 2014. Retrieved 14 May 2013.
  8. ↑ "OSSI-1". dk3wn. Archived from the original on 9 May 2013. Retrieved 14 May 2013.
  9. 1 2 "INTERNATIONAL AMATEUR RADIO UNION REGION 3. FIFTEENTH REGIONAL CONFERENCE. Triennial Report from KARL (2009-2012)". KARL. 2012. Archived from the original on 2 February 2016. Retrieved 14 May 2013.
  10. ↑ "OSSI mandates NovaNano to secure a launch opportunity in 2012 for the first individual satellite" (PDF). OSSI. 21 June 2011. Archived from the original (PDF) on 4 March 2016. Retrieved 15 May 2013.
  11. ↑ "Ossicode - Overview". GitHub . Archived from the original on 2021-04-19. Retrieved 2021-02-02.
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