Dove-OSCAR 17

Brazilian educational and amateur radio satellite

Dove-OSCAR 17
Dove-OSCAR 17 satellite (a.k.a. Microsat 2)
NamesOSCAR 17
Microsat 2
DO-17
BRAMSAT
Mission typeEducational, Amateur radio
OperatorBRAMSAT / AMSAT
COSPAR ID1990-005E Edit this at Wikidata
SATCAT no.20440
Mission duration34 years, 4 months and 2 days
(in solar orbit)
Spacecraft properties
BusAMSAT
ManufacturerAMSAT-BRAZIL
Launch mass12.92 kg (28.5 lb)
Dimensions21.3 × 23.0 × 23.0 cm
PowerSolar panels and batteries
Start of mission
Launch date2 January 1990, 01:44:35 UTC
RocketAriane 40 H10 V-35
Launch siteKourou, ELA-2
ContractorArianespace
End of mission
Last contactMarch 1998
Orbital parameters
Reference systemSun-synchronous orbit[1]
RegimeLow Earth orbit
Perigee altitude791 km (492 mi)
Apogee altitude821 km (510 mi)
Inclination98.70°
Period100.80 minutes
Amateur radio satellite (OSCAR)
← OSCAR 16
 

Dove-OSCAR 17 (a.k.a. DO-17 or Microsat 2) is a Brazilian educational and amateur radio satellite (BRAMSAT) (AMSAT-BRAZIL) launched on 22 January 1990.

Project

Dove-OSCAR 17 is one of the results of the so-called Microsat project by AMSAT, manufactured in the 1980s by the civil and electric engineer Junior Torres de Castro (amateur radio operator with callsign PY2BJO), who had been developing his ideas since 1957. He has built, with his own resources, the first artificial satellite for educational and humanitarian purposes: the "Dove".

The device, assembled in a garage in Botucatu, São Paulo, was meant to provide synthesised peace messages for educational institutions at a time when the Cold War was still determining international relations around the world. It has a Digital Orbiting Voice Encoder (DOVE), designed to emit the synthesised voice messages, and also telemetry data transmission (FM Packet AFSK 1200 AX.25 at 145.825 MHz). It is box shaped with dimensions of 21.3 × 23.0 × 23.0 cm, with solar panels on the faces of the cube and weights 12.92 kg.[2] The configuration and assembly was at that time designated as "Microsat".[3]

Mission

Dove-OSCAR 17 was launched on 22 January 1990 by an Ariane 4 rocket from Centre Spatial Guyanais (CSG). The payload also included the SPOT-2 and other five OSCAR satellites.[4] According to AMSAT, "due to hardware failures that have occurred since launch, the primary mission of providing voice messages of world peace from DOVE has not been fully realized"[5]

Last stable contact with the satellite officially occurred in March 1998 when it had a battery failure. However, because of the still functional solar panels, when the device is properly aligned to the Sun, it transmits its telemetry data.

See also

  • Spaceflight portal

References

  1. ^ "Trajectory: OSCAR 17 1990-005E". NASA. 14 May 2020. Retrieved 21 January 2021. Public Domain This article incorporates text from this source, which is in the public domain.
  2. ^ "DOVE (DOVE-OSCAR 17, DO 17)". Gunter's Space Page. 24 July 2018. Retrieved 21 January 2021.
  3. ^ Duncan, Courtney (26 September 1989). "A New, Small Satellite Bus Concept (AMSAT-NA)". Courtney Duncan. Retrieved 21 January 2021.
  4. ^ "Display: OSCAR 17 1990-005E". NASA. 14 May 2020. Retrieved 21 January 2021. Public Domain This article incorporates text from this source, which is in the public domain.
  5. ^ "Spotlight On: The Microsats". AMSAT. Archived from the original on 27 September 2015. Retrieved 11 August 2015.

External links

  • PY4ZBZ's page Collection of videos in Portuguese about the Dove-OSCAR 17
  • N2YO's real time OSCAR 17 tracking page
  • PU3XGS's page More information on PY2BJO and the DOVE satellite
  • Books about the Dove-OSCAR 17
  • v
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Orbital launches in 1990
January
February
March
April
  • Ofek-2
  • Unnamed
  • Pegsat, USA-55
  • Kosmos 2064, Kosmos 2065, Kosmos 2066, Kosmos 2067, Kosmos 2068, Kosmos 2069, Kosmos 2070, Kosmos 2071
  • AsiaSat 1
  • USA-56, USA-57, USA-58
  • Foton No.6L
  • Kosmos 2072
  • Palapa B2R
  • Kosmos 2073
  • Kosmos 2074
  • STS-31 (Hubble)
  • Kosmos 2075
  • Molniya-1 No.71
  • Kosmos 2076
May
  • Progress 42
  • Kosmos 2077
  • MacSat 1, MacSat 2
  • Kosmos 2078
  • Kosmos 2079, Kosmos 2080, Kosmos 2081
  • Kosmos 2082
  • Resurs-F1 No.50
  • Kristall
June
July
August
  • Soyuz TM-10
  • USA-63
  • Kosmos 2089
  • Kosmos 2090, Kosmos 2091, Kosmos 2092, Kosmos 2093, Kosmos 2094, Kosmos 2095
  • Ekran-M No.14L
  • Molniya-1T No.68
  • Progress M-4
  • Resurs-F1 No.49
  • Marco Polo 2
  • Kosmos 2096
  • Kosmos 2097
  • Yuri 3a
  • Kosmos 2098
  • Skynet 4C, Eutelsat II F-1
  • Kosmos 2099
September
  • Fengyun I-02, Qiqiuweixing 1, Qiqiuweixing 2
  • Resurs-F1 No.51
  • Kosmos 2100
  • Molniya-3 No.54L
  • Progress M-5
  • Meteor-2 No.25
October
November
  • Gorizont No.32L
  • USA-65
  • Kosmos 2103
  • STS-38 (USA-67, Prowler)
  • Kosmos 2104
  • Kosmos 2105
  • Satcom C1, GStar 4
  • Molniya 1T No.70
  • Gorizont No.33L
  • USA-66
  • Kosmos 2106
December
  • USA-68
  • STS-35
  • Soyuz TM-11
  • Kosmos 2107
  • Kosmos 2108
  • Kosmos 2109, Kosmos 2110, Kosmos 2111
  • Kosmos 2112
  • Gran' No.37L
  • Kosmos 2113
  • Kosmos 2114, Kosmos 2115, Kosmos 2116, Kosmos 2117, Kosmos 2118, Kosmos 2119
  • Kosmos 2120
  • Globus No.12
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ).
Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
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Satellites