Please make a donation to support Gunter's Space Page.
Thank you very much for visiting Gunter's Space Page. I hope that this site is useful and informative for you.
If you appreciate the information provided on this site, please consider supporting my work by making a simple and secure donation via PayPal. Please help to run the website and keep everything free of charge. Thank you very much.

Proton 1, 2, 3 (Proton-1 1, 2, 3, 4 / N-4 #1, 2, 3, 4)

Proton 3

The N-4 sereies of satellites, a.k.a. Proton-1, carried instruments to study super-high energy cosmic particles. The instruments were carried in a pressurized compartment and consisted of ionisation calorimeters to study the energy of particles in the 1013 eV range and determining the intensity and energy spectrum of galactic electrons, and measuring the intensity and energy spectrum of cosmic gamma-rays over 50 MeV.

Nation: USSR
Type / Application: Science
Operator:
Contractors:
Equipment:
Configuration:
Propulsion:
Power: 4 deployable fixed solar arrays, batteries
Lifetime:
Mass: 12200 kg
Orbit: 183 km × 589 km, 63.44 (#1) / 189 km × 608 km, 63.45 (#2) / 185 km × 585 km, 63.47 (#3)
Satellite COSPAR Date LS Launch Vehicle Remarks
Proton 1 (Proton-1 1, N-4 #1) 1965-054A 16.07.1965 Ba LC-81/23 Proton
Proton 2 (Proton-1 2, N-4 #2) 1965-087A 02.11.1965 Ba LC-81/23 Proton
Proton (3) (Proton-1 3, N-4 #3) 1966-F03 24.03.1966 Ba LC-81/23 F Proton
Proton 3 (Proton-1 4, N-4 #4) 1966-060A 06.07.1966 Ba LC-81/23 Proton
Further Proton missions: