'astrogational' originates from modern English, specifically formed from the word 'astrogation' + the adjectival suffix '-al', where 'astro-' comes from Greek 'astron' meaning 'star' and the '-gation' element is modeled on 'navigation' meaning 'the act of guiding or steering'.

'astrogational' changed from the coined noun 'astrogation' (a blend of 'astro-' + 'navigation') and eventually became the adjective 'astrogational' by the addition of the suffix '-al', commonly used to form adjectives.

Initially it meant 'pertaining to astrogation (space navigation)', and over time it has retained that core meaning, chiefly used in technical contexts and science fiction to describe matters of spacecraft navigation.