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# Factorio Runtime Docs Version 2.0.77

# AsteroidChunkID - Runtime Docs

## AsteroidChunkID :: union

An asteroid chunk prototype may be specified in one of two ways.

#### Union members

LuaAsteroidChunkPrototype | The asteroid chunk prototype.
string | The prototype name.

Concept used in

- LuaEntity::get_filter()
- LuaEntity::set_filter()
- LuaSpacePlatform::destroy_asteroid_chunks()
- LuaSpacePlatform::find_asteroid_chunks_filtered()