HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.

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ACTIVE MISSIONS
   AstroSat    BurstCube
   CALET    Chandra
   Fermi    HXMT-Insight
   INTEGRAL    IXPE
   MAXI    NICER
   NuSTAR    SRG  eROSITA
   /ART-XC
   Swift    XMM-Newton
   XRISM    
PAST MISSIONS
   AGILE    ANS
   ARIEL V    ASCA
   BBXRT    BeppoSAX
   CGRO    COPERNICUS
   COS-B    DXS
   EINSTEIN    EUVE
   EXOSAT    GINGA
   GRANAT    HaloSat
   HAKUCHO    HEAO-1
   HEAO-3    HETE-2
   Hitomi    OSO-7
   OSO-8    ROSAT
   Rossi XTE    SAS-2
   SAS-3    Suzaku
   TENMA    UHURU
   VELA 5B     WASS
   XQC    

Proton 1 & Proton 2

artist concept of Proton

* Mission Overview

Proton 1 was launched 16 July 1965 by the USSR into an orbit with apogee 589 km, perigee 183 km, and inclination 63.4 degrees. The orbital period was 92.25 minutes. The satellite weighed 12,200 kg. It was cylindrical in shape with convex ends. The experimental payload included instruments for monitoring cosmic rays with energies up to 1 X 1014 eV, determining the intensity and energy spectrum of galactic electrons, and measuring the intensity and energy spectrum of cosmic gamma-rays over 50 MeV. The satellite reentered the Earth's atmosphere on 11 October 1965.

Proton 2, physically identical to Proton 1, was launched on 2 November 1965. Its orbital parameters were: apogee 637 km, perigee 191 km, inclination 63.5 degrees. The orbital period was 92.6 minutes. It carried the same payload as Proton 1, again with the primary interest being ultra-high energy cosmic particles. It decayed on 6 February 1966.

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Page authors: Lorella Angelini Jesse Allen
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Last modified: Thursday, 26-Jun-2003 13:48:18 EDT

HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.