| Mission type | Geoscience Technology |
|---|---|
| Operator | INPE EMTAN |
| COSPAR ID | 1998-067KT |
| SATCATno. | 41931 |
| Mission duration | 4 months |
| Start of mission | |
| Launch date | December 9, 2016. Orbit since January 16, 2017 |
| Rocket | H-IIB/Kounotori 6 |
| Launch site |  JapanYoshinobu Launch Complex,Tanegashima Space Center |
| End of mission | |
| Decay date | October 18, 2017[1] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Eccentricity | 0,0008418 |
| Periaag altitude | 383 km |
| Apoaag altitude | 394 km |
| Inclination | 51,64° |
| Period | 92,32 min |
Tancredo-1 was a Brazilianpicosatellite. It was aTubeSat which was developed by the students from the schoolTancredo Almeida Neves, inUbatuba (state of São Paulo), with support for the picosat platform made byInstituto Nacional de Pesquisas Espaciais (INPE), adapting and integration to launch provided by TuPOD[2] from Italian companyGAUSS Srl and byAgência Espacial Brasileira (AEB).[3][4][5][6]
The idea was proposed by math teacher Cândido Oswaldo de Moura and initially developed by Emerson Issao Yaegashi, it was inspired by Super Interessante Magazine in Brazil and in a video called "TubeSats" and kits to build personal satellites developed by the companyInterorbital Systems, in theUnited States.[4][7] To start the project, the teacher contacted theInstituto Nacional de Pesquisas Espaciais (INPE), where, later, he was followed by another teacher to receive training and be able to help the students. The material to construct the satellite sponsored by a salesclerk of Ubatuba and the launch was possible with help ofAEB. The satellite was named “Tancredo-1” after the school.[4]
The picosatellite was 13 cm long and has a mass of 570 grams. It had five plaques in its structure. Solar arrays in the cylinder were responsible for powering the components of Tancredo-1. Some space existed inside the satellite that could be used for small scientific experiments in space, in the case of Tancredo-1, two payloads were used: onevoice recorder for radio-amateurs, educational payload and one simplifiedLangmuir probe to study the formation ofplasma bubbles in theionosphere. The Langmuir probe was made by National Institute for Space Research. The platform tubesat passed by a total re-engineering from the work toMestrado em Engenharia de Sistemas EspaciaisArchived 2017-06-15 at theWayback Machine Eng.Auro Tikami from INPE with orientation ofWalter Abrahão dos Santos – INPE.[8]
Almost 100 students took part in the project with the job ofwelding pieces and building electric circuits.[4][7] It orbited the Earth from 310 km. The satellite suffered orbital decay and burnt up in the atmosphere.[4][7]
The TubeSat started transmitting on January 19, 2017 on the frequency of 437.200 MHz in the70 cm amateur band.[9]
