Imagine the Universe!
Imagine Home | Satellites and Data |

Prognoz 2

artist concept of Prognoz satellite

* Mission Overview

Prognoz 2 was launched on 29 June 1972. It was put into a highly elliptical orbit with apogee 200,000 km, perigee 550 km, and inclination 65 degrees. It carried the first instrument package, SIGNE 1, resulting from the Franco-Soviet SIGNE collaboration. This instrument was intended to perform solar radiation studies. However, it detected cosmic gamma-ray bursts as well as solar events.

Prognoz 2 reentered the atmosphere on 15 December 1982.

* Instrumentation

The SIGNE 1 detector consisted of a Stilbene scintillator, 38.1 mm in diameter and 38.1 mm high. It was shielded by a plastic anticoincidence scintillator. There were 8 energy channels: 0.4-0.7 MeV, 0.7-1.0 MeV, 1-1.6 MeV, 1.6-2.4 MeV, 2.4-2.9 MeV, 2.9-3.9 MeV, 3.9-8.1 MeV, and 8.1-11.8 MeV. Counts were integrated for every 41 or 160 seconds, depending on the experiment mode. The effective area was 17.1 cm2.


[Gallery] [Publications]

If words seem to be missing from the articles, please read this.

Imagine the Universe! is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

The Imagine Team
Project Leader: Dr. Barbara Mattson
Curator: J.D. Myers
Responsible NASA Official: Phil Newman
All material on this site has been created and updated between 1997-2014.
This page last updated: Thursday, 08-Feb-2007 11:47:24 EST