The Kruger 60 Star System may be the Origin of Interstellar Comet C/2019 Q4 Borisova

Kruger 60 -- a plausible home system of the interstellar comet C/2019 Q4

Authors:

Dybczyński et al

Abstract:

An interstellar comet C/2019 Q4 was discovered on August 30 by an amateur astronomer Gennady Borisov at MARGOT observatory (Crimea). One of the obvious questions is where does this object come from. Taking an orbit obtained by Nakano and published by MPC in CBET 4670 we numerically integrated the motion of C/2019 Q4, the sun and 647 stars or stellar systems from our list of potential stellar perturbers of cometary motion. As a result we obtained that 1 Myr ago C/2019 Q4 passed double star Kruger 60 at a small distance of 1.74 pc having an extremely small relative velocity of 3.43 km/s. Almost the same results were obtained from our own orbital solutions.