INTERSTELLAR OBJECTS: new unusual bodies

On October 19, 2017, the Panstarrs 1 telescope discovers a very new object: its trajectory, the eccentricity of which being greater than 1, is hyperbolic: it is the first object observed to come from outside of the Solar system and will only pass! Named 1I / 2017 U1 ('Oumuamua) it has an unusual shape (230m x 35m x 35m) and a dark red-brown color (albedo of 0.10) due to the cosmic bombardment it suffered during its interstellar journey.

Below are the variations of brightness of 'Oumuamua. These large variations (between magnitudes 22 and 25) show that it is an elongated object of unusual shape.