Skip to content
79,433 pages · 13,741 images · since 1994 Browse A–Z Today in space history
Encyclopedia Astronautica The full story of spaceflight
Encyclopedia entry

Pioneer 6-7-8-9-E

Spacecraft · USA

Original archive entry. The text, images and links below are kept as they were written.

Pioneer 6
Pioneer 6
Credit: NASA

American solar satellite. Pioneers 6, 7, 8, and 9 were created to make the first detailed, comprehensive measurements of the solar wind, solar magnetic field and cosmic rays. Solar lander built by TRW for NASA, USA. Launched 1965 - 1969.

The vehicles acted as the world's first space-based solar weather network, providing practical data on solar storms which impact communications and power on Earth.

The satellites were designed to measure large scale magnetic phenomena and particles and fields in interplanetary space. Data from the vehicles were used to better understand stellar processes as well as the structure and flow of the solar wind. A fifth spacecraft, Pioneer E, was lost when it failed to orbit due to a launch vehicle failure. The Pioneer 6-9 program was touted as one of the least expensive of all NASA spacecraft programs in terms of scientific results per dollar spent. As of 1996, Pioneer 6 was NASA's oldest operational satellite, having been in orbit over 30 years. The spacecraft was spin stabilized at ~60 rpm. Body mounted solar cells provided 79 watts. The payload consisted of six instruments, including a Plasma Analyzer and Cosmic Ray Detector.

Country
USA
Bibliography
126, 2, 6, 12960

Chronology

5 events

1965 December 16

07:31 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Thor Delta E.
  • Pioneer 6 - . Payload: Pioneer A. Mass: 63 kg (138 lb). Nation: USA. Agency: NASA Ames. Program: Pioneer. Class: Astronomy. Type: Solar satellite. Spacecraft: Pioneer 6-7-8-9-E. USAF Sat Cat: 1841 . COSPAR: 1965-105A. Measured solar wind, Sun's magnetic field. Solar Orbit (Heliocentric). Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

1966 August 17

15:20 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Thor Delta E1.
  • Pioneer 7 - . Payload: Pioneer B. Mass: 63 kg (138 lb). Nation: USA. Agency: NASA Ames. Program: Pioneer. Class: Astronomy. Type: Solar satellite. Spacecraft: Pioneer 6-7-8-9-E. USAF Sat Cat: 2398 . COSPAR: 1966-075A. Apogee: 993 km (617 mi). Perigee: 246 km (152 mi). Inclination: 33.00 deg. Period: 97.20 min. Monitored solar wind, cosmic rays. SOLAR ORB. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

1967 December 13

14:08 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Thor Delta E1.
  • Pioneer 8 - . Payload: Pioneer C / TTS 1. Mass: 63 kg (138 lb). Nation: USA. Agency: NASA Ames. Program: Pioneer. Class: Astronomy. Type: Solar satellite. Spacecraft: Pioneer 6-7-8-9-E. USAF Sat Cat: 3066 . COSPAR: 1967-123A. Solar radiation data. Solar Orbit (Heliocentric). Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

1968 November 8

09:46 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Thor Delta E1.
  • Pioneer 9 - . Payload: Pioneer D / TTS 2. Mass: 63 kg (138 lb). Nation: USA. Agency: NASA Ames. Program: Pioneer. Class: Astronomy. Type: Solar satellite. Spacecraft: Pioneer 6-7-8-9-E. USAF Sat Cat: 3533 . COSPAR: 1968-100A. Solar radiation data. Solar Orbit (Heliocentric). Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

1969 August 27

21:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Thor Delta L. FAILURE: First stage hydraulics failure. Vehicle destructed at T+383 seconds. Failed Stage: 1.