# Kosmos 523

> Soviet satellite

**Wikidata**: [Q53591](https://www.wikidata.org/wiki/Q53591)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_523)  
**Source**: https://4ort.xyz/entity/kosmos-523

## Summary
Kosmos 523 was a Soviet satellite launched on October 5, 1972, under the specific designation DS-P1-Yu No.63. Manufactured by the Pivdenne Design Office, it was deployed into orbit using a Kosmos-2I carrier rocket. The satellite is identified by the international COSPAR ID 1972-078A.

## Key Facts
- **Launch Date:** October 5, 1972, at 11:30:00 UTC.
- **Classification:** It is an instance of the DSZ–P1–Ju satellite class (specifically DS-P1-Yu No.63).
- **Launch Site:** Plesetsk Cosmodrome Site 133.
- **Launch Vehicle:** Kosmos-2I (a Soviet carrier rocket).
- **Manufacturer:** Pivdenne Design Office.
- **COSPAR ID:** 1972-078A.
- **Satellite Catalog Number (SCN):** 06222.
- **Entity Type:** Soviet satellite.

## FAQs
### Q: When was Kosmos 523 launched?
A: Kosmos 523 was launched on October 5, 1972. The launch event took place at 11:30:00 from the Plesetsk Cosmodrome.

### Q: What rocket was used to deploy Kosmos 523?
A: The satellite was launched aboard a Kosmos-2I carrier rocket. This rocket was a Soviet launch vehicle that was eventually superseded.

### Q: Who manufactured Kosmos 523?
A: The satellite was manufactured by the Pivdenne Design Office. It belonged to the DSZ–P1–Ju class of satellites.

## Why It Matters
Kosmos 523 serves as a representative example of the Soviet Union's extensive "Kosmos" program, which encompassed a wide array of scientific and military satellites during the Cold War era. Launched in the early 1970s, this mission highlights the industrial capabilities of the Pivdenne Design Office, a major Ukrainian-Soviet design bureau responsible for various rocket and spacecraft systems.

The launch is significant for its use of the Kosmos-2I launch vehicle, a staple of Soviet light-lift rocketry derived from the R-12 ballistic missile. The mission utilized Plesetsk Cosmodrome Site 133, underscoring the operational density of the Plesetsk facility during this period. As part of the DSZ–P1–Ju series (specifically identified as No. 63), Kosmos 523 contributes to the historical record of satellite cataloging and space situational awareness, evidenced by its assigned COSPAR ID (1972-078A) and Satellite Catalog Number (06222).

## Notable For
- **Specific Class Designation:** Identified precisely as the 63rd unit (No. 63) of the DS-P1-Yu series.
- **Launch Precision:** Recorded with a precise launch time of 11:30:00.
- **Site Specificity:** Launched from Site 133 at the Plesetsk Cosmodrome, a specific pad used for Kosmos-2I missions.
- **Manufacturer Pedigree:** A product of the Pivdenne Design Office, a prominent design bureau within the Soviet space industry.

## Body

### Mission Overview
Kosmos 523 was a Soviet satellite that entered orbit on October 5, 1972. It operated under the alias DS-P1-Yu No.63, indicating its specific sequence within its satellite class. The mission was tracked under the international designation 1972-078A and the Satellite Catalog Number 06222.

### Vehicle and Launch Site
The satellite was delivered to space using a Kosmos-2I carrier rocket. This rocket system, described as a superseded Soviet carrier rocket, was a reliable workhorse for the Soviet Union during this era. The launch originated from the Plesetsk Cosmodrome, specifically from Site 133. The launch window was executed at 11:30:00.

### Design and Manufacturing
The design and construction of Kosmos 523 were managed by the Pivdenne Design Office. The spacecraft was classified as a DSZ–P1–Ju type satellite. This classification is the primary technical descriptor for the satellite's form and function within the Soviet space architecture.

### Related Entities
- **Class:** DSZ–P1–Ju
- **Rocket:** Kosmos-2I
- **Facility:** Plesetsk Cosmodrome Site 133

## References

1. Jonathan's Space Report