# Cosmos 729
**Wikidata**: [Q12753971](https://www.wikidata.org/wiki/Q12753971)  
**Source**: https://4ort.xyz/entity/cosmos-729

## Summary
Cosmos 729 was a Soviet satellite launched on April 22, 1975, utilizing the Zaliv satellite bus. It was deployed from the Plesetsk Cosmodrome using a Kosmos-3M launch vehicle and is identified by the international COSPAR designation 1975-034A.

## Key Facts
- **Launch Date:** April 22, 1975
- **Launch Time:** 21:10:37
- **Launch Vehicle:** Kosmos-3M
- **Satellite Bus:** Zaliv
- **Launch Site:** Plesetsk Cosmodrome Site 132
- **COSPAR ID:** 1975-034A
- **Satellite Catalog Number (SCN):** 07768
- **Program Association:** Part of the Tsiklon series
- **Wolfram Language Entity Code:** Entity["Satellite", "07768"]
- **Instance Of:** Zaliv (satellite class)

## FAQs
### Q: When and from where was Cosmos 729 launched?
A: Cosmos 729 was launched on April 22, 1975, at 21:10:37 from the Plesetsk Cosmodrome Site 132.

### Q: What type of satellite was Cosmos 729?
A: Cosmos 729 was a satellite built on the Zaliv bus platform and is classified as part of the Tsiklon series.

### Q: What rocket was used to launch Cosmos 729?
A: The satellite was launched aboard a Kosmos-3M rocket.

## Why It Matters
Cosmos 729 serves as a historical data point within the Soviet space program, specifically regarding the utilization of the Zaliv satellite bus during the mid-1970s. As part of the Tsiklon series, it contributes to the understanding of Soviet satellite constellations and launch cadence during the Cold War era. The mission demonstrates the operational use of the Kosmos-3M launch vehicle—a workhorse of the Soviet fleet—deploying payloads from the Plesetsk Cosmodrome. Its detailed tracking data, including precise SCN (07768) and COSPAR (1975-034A) identifiers, allows researchers and space historians to accurately catalog and cross-reference satellite deployments from this period.

## Notable For
- Being a confirmed instance of the **Zaliv** satellite bus class.
- Launching on the **Kosmos-3M** rocket, a prominent Soviet launch vehicle.
- Precise launch recording down to the second (**21:10:37**).
- Inclusion in multiple linguistic Wikipedia databases (Hungarian, Macedonian, Serbo-Croatian, Serbian).

## Body
### Technical Specifications
Cosmos 729 is identified as an instance of the **Zaliv** class satellite bus. This bus design was utilized for specific Soviet military and scientific payloads during the 1970s. The satellite's international designator is **1975-034A**, and it holds the Satellite Catalog Number **07768**.

### Launch Details
The satellite was successfully launched on **April 22, 1975**. The mission utilized the **Kosmos-3M** rocket, a two-stage launch vehicle developed in the Soviet Union. The launch originated from **Plesetsk Cosmodrome Site 132**, a primary launch complex for Kosmos-series satellites. The specific moment of launch was recorded at **21:10:37** UTC.

### Classification and Relationships
Structured data places Cosmos 729 as part of the **Tsiklon** (or Tsyklon) parent class. While the launch vehicle is confirmed as the Kosmos-3M, the entity is distinct from the rocket itself, belonging instead to the payload lineage associated with the Tsiklon system. The Zaliv bus designation confirms the specific structural and functional format of the satellite.

## References

1. Jonathan's Space Report