Q: What was the purpose of Pioneer 9?

A: Pioneer 9 was designed to study interplanetary space, including solar wind, cosmic rays, and magnetic fields, as part of NASA's early space exploration efforts.

Q: When was Pioneer 9 launched?

A: It was launched on **November 8, 1968**, from Cape Canaveral, Florida.

Q: How long did Pioneer 9 operate?

A: The probe remained operational until **1983**, when contact was lost.

Q: What rocket launched Pioneer 9?

A: It was launched using a **Delta E** rocket, a U.S. expendable launch vehicle.

Q: What were Pioneer 9's dimensions?

A: The probe had a **diameter of 0.94 meters** and a **height of 0.81 meters**, with a launch mass of **147 kg**.

Pioneer 9

NASA space probe

Vehicle space_probe Q11699469

Facts

16 properties

Instance of: space probe
Follows: Pioneer 8^[3]
Followed by: Pioneer 10^[4]
Launch date: 1968-11-08
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: 147 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: November 8, 1968^[8]

🏷️ Also known as

en Pioneer 9 en Pioneer D hu Pioneer–9 ru Пионер-9

🔖 Identifiers · 5

Image (Wikimedia Commons): Pioneer-6-9.jpg ↗
COSPAR ID: 1968-100A
Google Knowledge Graph ID: /g/122yyhqp
NSSDCA ID: 1968-100A
SCN: 03533

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 10

Followed by (predecessor) 1

Pioneer 10

Follows 1

Pioneer 8

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 8

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 9 is a space probe^[1].

⭐ Popularity Graph

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🌐 Wiki Languages

9 / 428 langs

📈 Wikipedia Views · last 12 months

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🌐 Available in 6 languages

csPioneer 9 dePioneer 9 esPioneer 9 huPioneer–9 plPioneer 9 svPioneer 9

References

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

Direct Wikidata claims

[2] ↑ Pioneer 9 — operator (P137): National Aeronautics and Space Administration. wikidata.org.
[3] ↑ Pioneer 9 — follows (P155): Pioneer 8. wikidata.org.
[4] ↑ Pioneer 9 — followed by (P156): Pioneer 10. wikidata.org.
[5] ↑ Pioneer 9 — manufacturer (P176): TRW Inc.. wikidata.org.
[6] ↑ Pioneer 9 — part of (P361): Pioneer 6, 7, 8, and 9. wikidata.org.
[7] ↑ Pioneer 9 — space launch vehicle (P375): Delta E. Jonathan's Space Report. wikidata.org.
[8] ↑ Pioneer 9 — UTC date of spacecraft launch (P619): November 8, 1968. Jonathan's Space Report. wikidata.org.
[9] ↑ Pioneer 9 — significant event (P793): rocket launch. Jonathan's Space Report. wikidata.org.
[10] ↑ Pioneer 9 — significant event (P793): loss of signal. wikidata.org.
[11] ↑ Pioneer 9 — start point (P1427): Cape Canaveral Space Launch Complex 17B. Jonathan's Space Report. wikidata.org.
[12] ↑ Pioneer 9 — height (P2048): 0.81 m. wikidata.org.
[13] ↑ Pioneer 9 — mass (P2067): 147 kg. nssdc.gsfc.nasa.gov. nssdc.gsfc.nasa.gov. Provenance: wikidata.org.
[14] ↑ Pioneer 9 — nominal power output (P2109): 79 watt. wikidata.org.
[15] ↑ Pioneer 9 — diameter (P2386): 0.94 m. wikidata.org.

Class ancestry

[1] ↑ Pioneer 9 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 9. Retrieved November 2, 2026, from https://4ort.xyz/entity/pioneer-9

MLA “Pioneer 9.” 4ort.xyz Knowledge Graph, 4ort.xyz, 2 Nov. 2026, https://4ort.xyz/entity/pioneer-9.

BibTeX

@misc{4ortxyz_pioneer-9_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Pioneer 9}}, year = {2026}, url = {https://4ort.xyz/entity/pioneer-9}, note = {Accessed: 2026-11-02}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Pioneer 9 — https://4ort.xyz/entity/pioneer-9 (retrieved 2026-11-02)

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