Astrography

Some Notes on Astrography
( All numbers are approximations)

Orion Arm: width = 3500 ly, depth=1000ly, length 10,00ly
There are variations, plus a halo of thinner dispersion.

X,Y,Z coordinates for Sigma Draconis relative to Sol (rounded to three digits)
X= -9.804ly, Y=-17.515ly, Z=6.014ly

Since we know that Manticore is in direct line through Sigma Draconis to Sol
Maintcore’s extrapolated X,Y,Z coordinates at 475ly from Sol are
X=-238701ly, Y=-443.239ly, Z=162.469ly
At 512 ly from Sol they are
X=-267.429ly, Y=-477.765ly, Z=175.125ly

For Basilsik add 100ly to the Manticore Z coordinate

TangoLima wrote:Some Notes on Astrography
( All numbers are approximations)

Orion Arm: width = 3500 ly, depth=1000ly, length 10,00ly
There are variations, plus a halo of thinner dispersion.

X,Y,Z coordinates for Sigma Draconis relative to Sol (rounded to three digits)
X= -9.804ly, Y=-17.515ly, Z=6.014ly

Since we know that Manticore is in direct line through Sigma Draconis to Sol
Maintcore’s extrapolated X,Y,Z coordinates at 475ly from Sol are
X=-238701ly, Y=-443.239ly, Z=162.469ly
At 512 ly from Sol they are
X=-267.429ly, Y=-477.765ly, Z=175.125ly

For Basilsik add 100ly to the Manticore Z coordinate

FYI: Although Sigma Draconis is a real star, the distance from Earth to it in the Honorverse does not match the distance in reality. It was pointed out to the author quite some time ago, but due to various factors, the real life distance was unable to be retconned into the books. I suspect that is why Sigma Draconis is not (or barely) mentioned in the more later books, instead using the name of the habitable planet in the Honorverse (Beowulf).

This is why I posted two solutions for
Manticore.