Q: What was the purpose of Pioneer 8?

A: Pioneer 8 was designed to study interplanetary space, including solar wind, cosmic rays, and the solar magnetic field. It was part of NASA's effort to understand space weather and its effects on Earth.

Q: How long did Pioneer 8 operate?

A: Pioneer 8 operated for nearly **29 years**, from its launch on **December 13, 1967**, until the loss of signal on **August 22, 1996**.

Q: What rocket launched Pioneer 8?

A: Pioneer 8 was launched using a **Delta E** expendable launch vehicle, specifically serial number **489 / D-055**.

Q: What were the dimensions of Pioneer 8?

A: Pioneer 8 had a **diameter of 0.94 meters** and a **height of 0.81 meters**, with a launch mass of **146 kg**.

Q: What happened to Pioneer 8?

A: Pioneer 8 lost signal on **August 22, 1996**, after nearly three decades of operation. It remains in a heliocentric orbit.

Pioneer 8

NASA space probe

Vehicle space_probe Q9060015

Facts

16 properties

Instance of: space probe
Follows: Pioneer 7^[3]
Followed by: Pioneer 9^[4]
Launch date: 1967-12-13
Part of: Pioneer 6, 7, 8, and 9^[6]
Diameter: 0.94 m^[15]
Height: 0.81 m^[12]
Launch vehicle: Delta E
Manufacturer: TRW Inc.^[5]
Mass: 146 kg^[13]
Nominal power output: 79 watt^[14]
Operator: National Aeronautics and Space Administration^[2]
Significant event: rocket launch, loss of signal^[9]^[10]
Space launch vehicle: Delta E^[7]
Start point: Cape Canaveral Space Launch Complex 17B^[11]
UTC date of spacecraft launch: December 13, 1967^[8]

🏷️ Also known as

en Pioneer 8 en Pioneer C es Pioneer C hu Pioneer–8 ru Пионер-8

🔖 Identifiers · 6

Image (Wikimedia Commons): Pioneer-6-9.jpg ↗
COSPAR ID: 1967-123A
Google Knowledge Graph ID: /g/121kq2z2
NAIF ID: -20
NSSDCA ID: 1967-123A
SCN: 03066

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections

Belongs to 2

Pioneer program, Pioneer 6, 7, 8, and 9

Followed by 1

Pioneer 9

Followed by (predecessor) 1

Pioneer 9

Follows 1

Pioneer 7

Instance of 1

space probe

Manufacturer 1

TRW Inc.

Operator 1

National Aeronautics and Space Administration

Part of 1

Pioneer 6, 7, 8, and 9

Preceded by (successor) 1

Pioneer 7

Significant event 1

rocket launch

Space launch vehicle 1

Delta E

Start point 1

Cape Canaveral Space Launch Complex 17B

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Summary

Pioneer 8 is a space probe^[1].

⭐ Popularity Graph

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🌐 Wiki Languages

9 / 428 langs

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🌐 Available in 6 languages

csPioneer 8 dePioneer 8 esPioneer 8 huPioneer–8 plPioneer 8 svPioneer 8

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[2] ↑ Pioneer 8 — operator (P137): National Aeronautics and Space Administration. wikidata.org.
[3] ↑ Pioneer 8 — follows (P155): Pioneer 7. wikidata.org.
[4] ↑ Pioneer 8 — followed by (P156): Pioneer 9. wikidata.org.
[5] ↑ Pioneer 8 — manufacturer (P176): TRW Inc.. wikidata.org.
[6] ↑ Pioneer 8 — part of (P361): Pioneer 6, 7, 8, and 9. wikidata.org.
[7] ↑ Pioneer 8 — space launch vehicle (P375): Delta E. Jonathan's Space Report. wikidata.org.
[8] ↑ Pioneer 8 — UTC date of spacecraft launch (P619): December 13, 1967. Jonathan's Space Report. wikidata.org.
[9] ↑ Pioneer 8 — significant event (P793): rocket launch. Jonathan's Space Report. wikidata.org.
[10] ↑ Pioneer 8 — significant event (P793): loss of signal. wikidata.org.
[11] ↑ Pioneer 8 — start point (P1427): Cape Canaveral Space Launch Complex 17B. Jonathan's Space Report. wikidata.org.
[12] ↑ Pioneer 8 — height (P2048): 0.81 m. wikidata.org.
[13] ↑ Pioneer 8 — mass (P2067): 146 kg. nssdc.gsfc.nasa.gov. nssdc.gsfc.nasa.gov. Provenance: wikidata.org.
[14] ↑ Pioneer 8 — nominal power output (P2109): 79 watt. wikidata.org.
[15] ↑ Pioneer 8 — diameter (P2386): 0.94 m. wikidata.org.

Class ancestry

[1] ↑ Pioneer 8 is an instance of space probe (Q26529) [P31, primary]. Wikidata. wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Pioneer 8. Retrieved November 2, 2026, from https://4ort.xyz/entity/pioneer-8

MLA “Pioneer 8.” 4ort.xyz Knowledge Graph, 4ort.xyz, 2 Nov. 2026, https://4ort.xyz/entity/pioneer-8.

BibTeX

@misc{4ortxyz_pioneer-8_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Pioneer 8}}, year = {2026}, url = {https://4ort.xyz/entity/pioneer-8}, note = {Accessed: 2026-11-02}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Pioneer 8 — https://4ort.xyz/entity/pioneer-8 (retrieved 2026-11-02)

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