Asteroid 1I/2017 U1 (`Oumuamua) turns out to have been reddish – like a lot of outer solar system objects – and had a length-to-diameter ratio of about ten. Funky. Overall length of about 400 meters, no detectable gas or dust, indicating solid rock and/or metal. Tumble rate was once per 7.3 hours.
1: It’s Gungnir.
2: A starship, long dead.
3: A planet killer, badly targeted.