Oh no! Another alien probe

[Anomalocaris]

I like to make a correction to what I said. The minimum stable orbital speed about Milky Way at the solar distance from center of Milky Way is not 150km/s, but effectively ~0km /s, as in the case of an extremely elliptical orbit about the center of milky way with major axis equal to the distance from the solar system to the center milky way, and a very small minority axis compare to the major axis. I will calculate how small the major axis can be without the object falling into the Roche limit about the core of milky way when I get home.

This does ignore the fact that elliptical motion about the center of milky way would not quite observe Kepler's law of motion because milky way can not be approximated ad a point mass at one center of the eclipse.