================================================================ Space Monitoring Data Center of Skobeltsyn Institute of Nuclear Physics. Lomonosov Moscow State University. Cosmos-1686 was launched in October 25, 1985 from Baiconur cosmodrom (USSR). Cosmos-1686 was orbiting at altitudes 350 km (till November 1986) and 480 km (since December 1986) and 52 degrees inclination. Cosmos1686 data collected from February to December 1986 is available. Instrument package ELECTRON-4 (developed in SINP MSU) onboard Cosmos-1686 is capable of measuring high energy electrons with energy >40 keV in 6 energy ranges and protons with energy >0.9 MeV in 3 energy ranges. ------------------------------------------------------------------------------------------------------------------------------------------------------ ELECTRON-4 Instrument Package The ELECTRON-4 instrument package onboard COSMOS-1686 satellite was created in D.V. Skobeltsin Institute of Nuclear Physics Moscow State University (SINP MSU). ELECTRON-4 consists of two simple instruments: ELECTRON-4A1 and ELECTRON-4A2. The instruments are oriented in two orthogonal directions. The orientation of COSMOS-1686 satellite is not fixed so the orientation of the detectors is undefined. ELECTRON-4A1 and ELECTRON-4A2 consist of a similar telescopes for observation of energetic charged particle spectra, and of similar packages of gas-discharge counters for observation of low energy particles. Each telescope consists of 4 axial semiconductor n-p detectors (n-p1, n-p2, n-p3 and n-p4 50mm, 2mm, 2mm and 2mm thick respectively) under aluminium passive shield (about 2.7 g/cm2 thick) with field of view about 20 degrees. The geometric factor of each telescope is 0.1 cm2?sr. The gas-discharge counter package consists of two gas-discharge counters (gdc1 and gdc2) under different passive shields (15 mg/cm2 and 1.1 mg/cm2, respectively). Electrons Electron energy [MeV] Field of view [degrees] Effective Geometric Factor [cm2*sr] Ee>0.04 + Ep>0.5 46 0.04 Ee>0.1 + Ep>2.0 46 0.04 0.3-0.6 20 0.08 0.6-0.9 20 0.08 0.9-1.2 20 0.06 1.2-2.0 20 0.05 Protons Proton energy [MeV] Field of view [degrees] Effective Geometric Factor [cm2*sr] 0.9-8.0 20 0.1 2.0-8.0 20 0.1 Ep>30.0 + Ee>2.0 20 0.1 Data available from 01.02.1986 to 11.12.1986 ---------------------------------------------------------------------------------------------------------------------------------------------------------- Headers from electron fluxes table: Date - Date and time, Format: YYYY-MM-DD_HH:MM:SS halfcomp1 I1E01_2 - Electrons >0.1 MeV, Protons >2.0 MeV I1E40_05 - Electrons >0.04 MeV, Protons >0.5 MeV I1E03_06 - Electrons 0.3-0.6 MeV I1E06_09 - Electrons 0.6-0.9 MeV I1E09_12 - Electrons 0.9-1.2 MeV I1E12_20 - Electrons 1.2-2.0 MeV halfcomp2 I2E01_2 - Electrons >0.1 MeV, Protons >2.0 MeV I2E40_05 - Electrons >0.04 MeV, Protons >0.5 MeV I2E03_06 - Electrons 0.3-0.6 MeV I2E06_09 - Electrons 0.6-0.9 MeV I2E09_12 - Electrons 0.9-1.2 MeV I2E12_20 - Electrons 1.2-2.0 MeV Geodetic: ALT - Altitude, km (Above the sea level) LAT - Latitude, degrees LONGI - Longitude, degrees McIlwain: BCOORD - Magnetic field module, Gauss LCOORD Headers from proton fluxes table: Date - Date and time, Format: YYYY-MM-DD_HH:MM:SS halfcomp1 I1P09_8 - Proton 0.9-8, MeV I1P20_80 - Proton 2-8, MeV I1P30_20 - Electron >2, Ğroton 30 MeV halfcomp2 I2P09_8 - Proton 0.9, 8, MeV I2P20_8 - Proton 2, 8, MeV I2P30_20 - Proton 20, 30, MeV # this channel of telescope on ELECTRON-4A2 has never being used Geodetic: ALT - Altitude, km (Above the sea level) LAT - Latitude, degrees LONGI - Longitude, degrees McIlwain: BCOORD - Magnetic field module, Gauss LCOORD -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Typical row from table of electron fluxes: Date I1E01_2 I1E40_05 I1E03_06 I1E06_09 I1E09_12 I1E12_20 I2E01_2 I2E40_05 I2E03_06 I2E06_09 I2E09_12 I2E12_20 ALT LAT LONGI BCOORD LCOORD 1986-02-01_04:33:15 0.245 0.236 215.63 310.94 300 126.95 0.26 8.09 206.25 353.91 303.13 164.06 356 51.75 110 0.498 2.072 Typical row from table of proton fluxes: Date I1P09_8 I1P20_80 I1P30_20 I2P09_8 I2P20_8 ALT LAT LONGI BCOORD LCOORD 1986-02-01_04:33:15 0.599 0.422 0.6 0.59 0.375 356 51.75 110 0.498 2.072 ----------------------------------------------------------------------- Contacts: smdc@sinp.msu.ru Please, acknowledge SMDC of SINP MSU using the data. Space Monitoring Data Center. Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics.