What are 2I/Borisov's heliocentric orbital elements and hyperbolic excess speed?

Answer 1

Coming into the Perihelion Point

Answer 2

https://en.wikipedia.org/wiki/C/2019_Q4_(Borisov)

Answer 3

You have this all together. Maybe model this with Celestia.

Answer 4

KEPLERIAN ORBITAL ELEMENTS OF 2I/BORISOV

(from JPL Horizons, 9 October 2019, 402 observations over 37 days)

a = −0.852093539281182 AU

e = 3.354075587715023

i = 44.05688099659861°

Ω = 308.1430298932183°

ω = 209.1418223232404°

T = 2458826.0739990142 JD

The calculated hyperbolic excess speed, from these elements, is 32.266 km/sec.