On Wed, Nov 07, 2018 at 01:10:40AM +0000, Phil Pugliese (via tml list) wrote:
> Any idea how long it would take this to travel here?
> Ob-Trav;A pre-Ancients artifact perhaps?

26 km/s is about 1/11000 of the speed of light, so on the order of
11000 years per light-year travelled.  Backtracking its motion and
those of known stars, the minimum would be on the order of a few
hundred thousand years.  Apparently its colour suggests that it hasn't
been in interstellar space for billions of years, but anything in
between is plausible.

- Tim