It was tiny and pretty far away. I dont know exactly what you mean. They could tell by the rhythm of light that it was rotating and shaped strangely. It was also very reflective. It also sped up when it passed the sun. They had a lot of telescopes pointed at it and were able to learn certain things. It was also going fairly slowly. Avi Loeb def. Has some science behind what he's saying.
Herebeorht commented on An Interview with the Harvard Astronomer Avi Loeb About the Mysterious Interstellar Object ‘Oumuamua reddit
It was tiny and pretty far away. I dont know exactly what you mean. They could tell by the rhythm of light that it was rotating and shaped strangely. It was also very reflective. It also sped up when it passed the sun. They had a lot of telescopes pointed at it and were able to learn certain things. It was also going fairly slowly. Avi Loeb def. Has some science behind what he's saying.