# GEO-IK

> series of 14 Soviet/Russian geodetic satellites launched between 1981 and 1994

**Wikidata**: [Q1307218](https://www.wikidata.org/wiki/Q1307218)  
**Source**: https://4ort.xyz/entity/geo-ik

## Summary
GEO-IK is a series of 14 Soviet and Russian geodetic satellites launched between 1981 and 1994. These satellites were designed for geodetic research, helping to measure Earth's gravitational field, shape, and rotation with high precision.

## Key Facts
- **Series Overview**: 14 geodetic satellites launched between 1981 and 1994 under the Soviet Union and later Russia.
- **Manufacturer**: Built by JSC Information Satellite Systems Reshetnev.
- **Mass**: Each satellite weighed approximately 1,500 kilograms.
- **Power Source**: Equipped with a spacecraft solar array consisting of 8 panels.
- **Aliases**: Also known as Musson, Гео-ИК, or 11Ф666.
- **Predecessor/Successor**: Replaced the Sfera satellite series and was later succeeded by GEO-IK-2.
- **Country of Origin**: Developed and launched by the Soviet Union and Russia.
- **Classification**: Subclass of geodetic satellites, used for Earth measurement and geodesy.

## FAQs
### Q: What was the purpose of the GEO-IK satellites?
A: The GEO-IK satellites were geodetic satellites used to study Earth's gravitational field, shape, and rotation, providing data for scientific and military applications.

### Q: How many GEO-IK satellites were launched?
A: A total of 14 GEO-IK satellites were launched between 1981 and 1994.

### Q: Who manufactured the GEO-IK satellites?
A: The satellites were manufactured by JSC Information Satellite Systems Reshetnev, a Russian aerospace company.

### Q: What powered the GEO-IK satellites?
A: The satellites were powered by a solar array consisting of 8 panels.

### Q: What replaced the GEO-IK series?
A: The GEO-IK series was succeeded by the GEO-IK-2 satellites, which continued the geodetic mission with updated technology.

## Why It Matters
The GEO-IK series played a crucial role in advancing geodesy, the science of measuring Earth's size, shape, and gravitational field. These satellites provided essential data for mapping, navigation, and scientific research, contributing to both civilian and military applications. By improving our understanding of Earth's geophysical properties, GEO-IK helped enhance the accuracy of global positioning systems, geological surveys, and climate studies. The series also demonstrated the Soviet Union's and later Russia's capabilities in satellite technology, paving the way for future geodetic missions like GEO-IK-2.

## Notable For
- **Precision Geodesy**: One of the first Soviet/Russian satellite series dedicated to high-precision geodetic measurements.
- **Long Operational Period**: Spanned over a decade (1981–1994), showcasing sustained commitment to geodetic research.
- **Technological Foundation**: Laid the groundwork for the subsequent GEO-IK-2 series, which continues geodetic observations with modernized equipment.
- **Dual-Use Applications**: Served both scientific and military purposes, including Earth observation and navigation.
- **Solar-Powered Design**: Featured an 8-panel solar array, a notable engineering achievement for its time.

## Body
### Overview and Purpose
The GEO-IK series was a collection of geodetic satellites developed by the Soviet Union and later Russia. Their primary mission was to conduct geodetic research, which involves measuring Earth's gravitational field, shape, and rotational dynamics. This data is critical for applications such as cartography, navigation, and geophysical studies.

### Technical Specifications
- **Mass**: Each GEO-IK satellite had a mass of approximately 1,500 kilograms.
- **Power System**: The satellites were equipped with a solar array comprising 8 panels, providing the necessary electrical power for operations.
- **Manufacturer**: JSC Information Satellite Systems Reshetnev, a leading Russian aerospace manufacturer, was responsible for their production.

### Launch History
The GEO-IK series consisted of 14 satellites launched between 1981 and 1994. Notable missions in the series include:
- Cosmos 1312
- Cosmos 1410
- Cosmos 1510
- Cosmos 1589
- Cosmos 1660
- Cosmos 1732
- Cosmos 1803
- Cosmos 1823
- Cosmos 1950
- Cosmos 2037
- Cosmos 2088
- Cosmos 2226

### Evolution and Legacy
The GEO-IK series succeeded the earlier Sfera satellites and was later replaced by the GEO-IK-2 series, which features updated technology for continued geodetic research. The GEO-IK satellites were part of a broader effort to enhance Soviet and Russian capabilities in Earth observation and satellite-based geodesy.

### Aliases and Designations
The GEO-IK satellites were also known by the following names:
- Musson
- Гео-ИК (Geo-IK in Cyrillic)
- 11Ф666 (GRAU index)

## Schema Markup
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  "description": "A series of 14 Soviet/Russian geodetic satellites launched between 1981 and 1994.",
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## References

1. [Source](https://space.skyrocket.de/doc_sdat/geo-ik.htm)