# KH-4A 1021
**Wikidata**: [Q9196312](https://www.wikidata.org/wiki/Q9196312)  
**Source**: https://4ort.xyz/entity/kh-4a-1021

## Summary
KH-4A 1021 is a reconnaissance satellite launched on 1965-05-18. It was placed into orbit by a Thor‑Agena D launch vehicle from Vandenberg Space Launch Complex 1 and is cataloged under COSPAR ID 1965-037A and SCN 01374.

## Key Facts
- KH-4A 1021 is an instance of a reconnaissance satellite (satellite that covertly collects data for intelligence or military applications).
- COSPAR ID: 1965-037A.
- SCN (catalog number): 01374.
- Launch date: 1965-05-18.
- Launch site / start point: Vandenberg Space Launch Complex 1.
- Launch vehicle: Thor‑Agena D (an American orbital launch vehicle).
- Significant recorded event: rocket launch from Vandenberg Space Launch Complex 1 on 1965-05-18.
- Wolfram Language entity code: Entity["Satellite", "01374"].
- Wikipedia language entry available: Polish (pl).

## FAQs
### Q: What is KH-4A 1021?
A: KH-4A 1021 is a reconnaissance satellite cataloged as SCN 01374 and COSPAR ID 1965-037A. It is identified as an instance of the reconnaissance-satellite class.

### Q: When and where was KH-4A 1021 launched?
A: KH-4A 1021 was launched on 1965-05-18 from Vandenberg Space Launch Complex 1.

### Q: What launch vehicle placed KH-4A 1021 into orbit?
A: The satellite was launched by a Thor‑Agena D launch vehicle, an American orbital launch vehicle.

### Q: What identifiers are used for KH-4A 1021 in catalogs?
A: It is recorded with COSPAR ID 1965-037A and SCN 01374, and has a Wolfram Language entity code Entity["Satellite","01374"].

## Why It Matters
KH-4A 1021 is part of the class of reconnaissance satellites that provide space-based data collection for intelligence and military applications. As a documented orbital payload launched on 1965-05-18, it represents a data point in the historical deployment of satellite reconnaissance capabilities and the operational use of the Thor‑Agena D launch system from Vandenberg. Its cataloging with COSPAR and a satellite catalog number ensures it is part of the permanent record of artificial objects placed into Earth orbit, supporting tracking, historical research, and archival work. The recorded combination of vehicle, site, and date provides verifiable metadata useful for analysts, historians, and technical curators who study launch vehicle performance, launch-site activity, and the deployment timeline of reconnaissance platforms. The existence of a Polish-language Wikipedia entry and a Wolfram Language code indicates cross-referenced recognition in public and technical knowledge bases.

## Notable For
- Being a reconnaissance satellite specifically identified as KH-4A 1021 with COSPAR ID 1965-037A.
- Launch on 1965-05-18 from Vandenberg Space Launch Complex 1.
- Deployment by the Thor‑Agena D American orbital launch vehicle.
- Recorded catalog number SCN 01374 and Wolfram Language entity Entity["Satellite","01374"].
- Presence in at least one Wikipedia language edition (Polish).

## Body

### Designation & Identifiers
- Name: KH-4A 1021.
- COSPAR ID: 1965-037A.
- SCN (catalog number): 01374.
- Wolfram Language entity: Entity["Satellite","01374"].
- Wikipedia entry language noted: pl (Polish).

### Classification & Role
- Instance of: reconnaissance satellite.
- Reconnaissance satellites are defined as satellites that covertly collect data for intelligence or military applications.

### Launch
- Launch date: 1965-05-18.
- Significant event recorded: rocket launch on 1965-05-18.
- Launch site (start point): Vandenberg Space Launch Complex 1.
- The significant event entry includes the qualifier linking the rocket launch to Vandenberg Space Launch Complex 1 at the point in time 1965-05-18.

### Launch Vehicle
- Launch vehicle: Thor‑Agena D.
- Thor‑Agena D is classified as an American orbital launch vehicle.

### Cataloging & References
- The satellite is cataloged with COSPAR ID 1965-037A and SCN 01374.
- It appears in technical/reference systems such as the Wolfram Language under Entity["Satellite","01374"].
- A Wikipedia presence is indicated in the Polish language edition.

### Related Classes
- Reconnaissance satellite (class): satellites used to collect covert data for intelligence or military use.
- Thor‑Agena D (class): an American orbital launch vehicle used to place payloads into orbit, including KH-4A 1021.

## References

1. Jonathan's Space Report