The question refers to the identity of "Omuamua". Among the given options, "Omuamua" is correctly identified as:
An interstellar object
"Oumuamua" (note the correct spelling) is the first-known object from outside our solar system that has passed through it. Discovered on October 19, 2017, by astronomers Robert Weryk and Marco Micheli using data from Hawaii's Pan-STARRS telescope, it has sparked significant interest due to its unusual trajectory and high speed. Unlike objects typically observed within our solar system, "Oumuamua" originated from another star system, making it a point of study for scientists investigating interstellar space.