Most likely Rostov refers to Rostov-on-Don [1], at 47°14′N 39°42′E. Assuming a spherical earth, Michurinsk is ~630 km further north. The figure given in the ar

Most likely Rostov refers to Rostov-on-Don [1], at 47°14′N 39°42′E. Assuming a spherical earth, Michurinsk is ~630 km further north. The figure given in the article is probably rounded. [1] https://en.wikipedia.org/wiki/Rostov-on-Don https://en.wikipedia.org/wiki/Rostov-on-Don