Q: What was the purpose of the GEOS-3 satellite?

A: GEOS-3 was part of NASA's GEOS program, which aimed to study Earth's geodynamics and oceanography by measuring gravitational forces and Earth's shape.

Q: When was GEOS-3 launched, and where from?

A: GEOS-3 was launched on April 9, 1975, from Vandenberg Space Launch Complex 2 using a Delta 1000 launch vehicle.

Q: What makes GEOS-3 significant in the GEOS program?

A: GEOS-3 was the third and final satellite in the GEOS program, concluding NASA's efforts to study Earth's geodynamics and oceanography through satellite-based measurements.

Q: What was the launch vehicle used for GEOS-3?

A: GEOS-3 was launched using a Delta 1000, a series of American expendable launch systems.

Q: What is the COSPAR ID of GEOS-3?

A: The COSPAR ID of GEOS-3 is 1975-027A.

GEOS-3

third and final satellite of NASA's Geodetic Earth Orbiting Satellite/Geodynamics Experimental Ocean Satellite program

Vehicle artificial_satellite Q16063525

Facts

7 properties

Instance of: artificial satellite, GEOS^[2]
Launch date: 1975-04-09
Launch vehicle: Delta 1000
Significant event: rocket launch^[5]
Space launch vehicle: Delta 1000^[3]
Start point: Vandenberg Space Launch Complex 2^[6]
UTC date of spacecraft launch: April 9, 1975^[4]

🏷️ Also known as

en GEOS-3

🔖 Identifiers · 5

Image (Wikimedia Commons): Geos-3.gif ↗
COSPAR ID: 1975-027A
Freebase ID: /m/0_83bkd
SCN: 07734
Wolfram Language entity code: Entity["Satellite", "07734"]

🔗 Connections

Instance of 2

artificial satellite, GEOS

Significant event 1

rocket launch

Space launch vehicle 1

Delta 1000

Start point 1

Vandenberg Space Launch Complex 2

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Summary

GEOS-3 is an artificial satellite^[1].

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🌐 Available in 2 languages

enGEOS-3 ruGEOS-3

References

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

Direct Wikidata claims

[2] ↑ GEOS-3 — instance of (P31): GEOS. wikidata.org.
[3] ↑ GEOS-3 — space launch vehicle (P375): Delta 1000. Jonathan's Space Report. wikidata.org.
[4] ↑ GEOS-3 — UTC date of spacecraft launch (P619): April 9, 1975. Jonathan's Space Report. wikidata.org.
[5] ↑ GEOS-3 — significant event (P793): rocket launch. Jonathan's Space Report. wikidata.org.
[6] ↑ GEOS-3 — start point (P1427): Vandenberg Space Launch Complex 2. Jonathan's Space Report. wikidata.org.

Class ancestry

[1] ↑ GEOS-3 is an instance of artificial satellite (Q26540) [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). GEOS-3. Retrieved November 1, 2026, from https://4ort.xyz/entity/geos-3

MLA “GEOS-3.” 4ort.xyz Knowledge Graph, 4ort.xyz, 1 Nov. 2026, https://4ort.xyz/entity/geos-3.

BibTeX

@misc{4ortxyz_geos-3_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{GEOS-3}}, year = {2026}, url = {https://4ort.xyz/entity/geos-3}, note = {Accessed: 2026-11-01}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): GEOS-3 — https://4ort.xyz/entity/geos-3 (retrieved 2026-11-01)

Canonical URL: https://4ort.xyz/entity/geos-3 · Last refreshed: November 1, 2026