Impacting ASteroids (COIAS)[1] using archival data from the Subaru Telescope,[2] which was first reported to the Minor Planet Center in February 2024.

[5] However, these observations made using Subaru Telescope were not reported until February 2024 through the web-based citizen science project Come On!

After its orbital uncertainty parameter dropped to 0, the asteroid was numbered (697402) and the discovery credit was assigned to Subaru Telescope and later to the citizen science project COIAS.

For the naming of the asteroid, the COIAS development team and the citizen scientists who have taken part in the astrometric measurements of (697402) has made a discussion.

This decision is explained in the naming citation as follows: Ao Manaka is a character in the comic/animation Asteroid in Love created by Japanese manga artist Quro.