ISO 20991:2025

Space systems — Requirements for small spacecraft

Publication date:   Oct 7, 2025

General information

60.60   Standard published   Oct 7, 2025

ISO

ISO/TC 20/SC 14 Space systems and operations

International Standard

49.020   Aircraft and space vehicles in general

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Scope

This document describes minimum requirements for small spacecraft.
This document covers different categories of small spacecraft – so-called mini-, micro-, nano-, pico- and femto-, as well as CubeSat, spacecraft. Therefore, for the sake of convenience, the term “small spacecraft” is used throughout this document as a generic term.
This document can be applied by small spacecraft developers, as well as dispenser providers and launch operators.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO/TS 20991:2018

NOW

PUBLISHED
ISO 20991:2025
60.60 Standard published
Oct 7, 2025