| 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 (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 South 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]
|
| |
|---|---|
| January |
|
| February |
|
| March |
|
| April |
|
| May | Zhongxing 11 |
| June |
|
| July |
|
| August |
|
| September |
|
| October |
|
| November |
|
| December |
|
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). | |
