# ISO/TS 20991:2018 — Withdrawn and superseded ISO standards

For ISO/TS 20991:2018, item title is Space systems — Requirements for small spacecraft; status code is 9599; successor is ISO 20991:2025; withdrawn / published date is 2018-07-20, recorded from its source on 2026-08-05.

- **Identifier:** ISO/TS 20991:2018 _(verified: appears in the quote below)_
- **Item title:** Space systems — Requirements for small spacecraft _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 20991:2025
- **Withdrawn / published date:** 2018-07-20 _(verified: appears in the quote below)_

## What the source says

> 74109,TS,,ISO/TS 20991:2018,Space systems — Requirements for small spacecraft,Systèmes spatiaux — Exigences relatives aux petits engins spatiaux,2018-07-20,1,['49.140'],ISO/TC 20/SC 14,9599,,[89810],"['en','fr']",6,"<p>This document describes minimum requirements for small spacecraft.</p><p>Small spacecraft may employ untraditional spacecraft development and management philosophy. These spacecraft projects are usually budget-limited or mass-limited, which makes a single (exclusive) launch unaffordable.</p><p>The scope of this document encompasses different categories of small spacecraft — so-called mini-, micro-, nano-, pico- and femto-, as well as CubeSat, spacecraft. Therefore, for the sak

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).