Looking at your data reminds me of another item from travellermap that I don't know if I ever found out the answer to. Troutiyka, in the "Dark" sector, is a F8 Ia supergiant only 52 parsec from Terra, which should be somewhere between -4 and -1 magnitude in our skies, yet it is curiously absent. Even Damiya (at 122 parsec) should be well known to Terran astronomy geeks at around +1.4 magnitude. Give or take - travellermap identifies the spectral class but not the exact luminosity.

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On January 17, 2018 4:59 PM, Ethan Henry <xxxxxx@gmail.com> wrote:

Yeah, that was always my understanding of what PBG meant - it's P * 10^(Pop). But you could do (P+0.5) or whatever.
10^(Pop+P/10) could work I guess maybe but that seems hard.

On Wed, Jan 17, 2018 at 4:47 PM, Kenneth Barns <xxxxxx@gmail.com> wrote:

Oh, I agree that the PBG officially represents a 2nd significant figure. But it does mean that the Pop represents a log scale, and the PBG represents an arithmetic scale. Messy. :(

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