If you had written something resembling actual 2018 back in (say) 2015, I'd have thrown your book in the trash.
Getting back to the mapping thing for a minute...since DSC seems to be incorporating bits of stuff from Star Charts and Stellar Cartography graphics...and I think we're all inclined to ignore whatever source puts Hobus at 500 lightyears away from Romulus, because if the FTL effects of that supernova were moving that far that quickly, it could only leave most of the rest of then-known-to-our-heroes space intact if it were 500 ly "straight up", along the +Z axis...
As of this particular morning, Memory Beta is looking for the citation source to back the claim up too, for whatever that's worth. Something else I'm writing off as absurd is the ST Online idea that a supernova could be "aimed" so as to kill the Romulan homesystem worlds but leave the planets orbiting itself mostly intact (although no longer habitable by most known species aside from Q, Organians and maybe Metrons). Whatever the distance between the two systems.
A more reasonable idea. And if we accept that the Romulan homestar is NN 3788 (AKA GJ 3788, AKA Wolf 487; Going from whitten.org to SIMBAD...), what stars do we currently know of that are sitting on the periphery of that 14-lightyear sphere? In any direction from the Romulan system? (And isn't "Wolf 487" easier to remember, anyway?)
Hard to say at that distance. The Internet Stellar Database doesn't list any other stars within 14 light-years of that star (which it has listed under Bonner Durchmusterung -1°2832). Which means the stars near it would be too dim to have a listing, ruling out anything capable of going supernova. The nearest listed star in ISDb is 38 Virginis at 18 ly, and there are no supergiants within 50 ly. But then, ST has a history of portraying numerous supernova stars, nebulae, and other such objects far closer to Earth than there are in real life. In a lot of ways, I wish they'd stuck with the large-Federation model and had ships roaming much further out into the galaxy than Star Charts presumes, since it would better justify the stories about all these phenomena that can't be found at close range.
This might let the production teams on the series and movies - and novel and comics writers - move a bit further once it gets done, I suspect. You've been keeping an eye on Kevin Jardine's weblog, galaxymap.org? https://www.kickstarter.com/projects/galaxymap/the-first-accurate-and-detailed-map-of-the-milky-w I also note that Kevin's building off of the GAIA DR2 database for this project. Admittedly there's flaws in the information gathered, but it covers far more volume than HIPARCOS did...
First I've heard of it. It looks fascinating -- like Celestia but with nebulae and interstellar medium variations charted as well as stars and planets. I've always wanted something like that. I doubt very much that any Star Trek producers will ever bother to depict galactic cartography accurately -- that ship has long since sailed -- but it could be useful for hard-SF writers like li'l ol' me.
Looks like Kevin's about 80 % of the way to his funding goal as of today, too. And if you're looking for an alternative to Celestia, I'm not sure if (a) you haven't already heard of this option and (b) how useful it will be to you and other like-minded people either way. But there's GAIA Sky. https://zah.uni-heidelberg.de/institutes/ari/gaia/outreach/gaiasky/ One more thing. This is what Kevin has so far for the 4.5 kpc-radius version.
Oops! Now they tell me. Oh, well. The Face of the Unknown is a better book than Seek a Newer World would've been.
wait a second will we be getting the Greg Cox Spock Prime novel? that's the one I most wanted to read!
Star Trek Online also just announced they're adding new Kelvin Timeline stuff, maybe it's connected? CBS just giving the go ahead to release new things?