Dyams are another spacial measurement, used to measure the far smaller distances between planets. A dyam is roughly 94.6 million human kilometers. Earth is about 1.57 dyams from its sun, whereas Felysia is around 2 dyams from its sun. The dyam is therefore the Felisian equivalent of the human Astronomical Unit (AU), by which we measure the distances between objects in our solar-system.

The masses of objects are given in Bal.Ms (Or BMs). This is short for "Balastrackonastreyan Mass", and 1BM is about the equivalent of the mass of the star the unit takes its name from. In fact, the star is now ever so slightly larger than 1BM, as stars in the Noctis galaxy actually produce small amounts of matter as part of their nuclear reactions, and the Bal.M unit was introduced many epocs ago, since when the star's mass has increased.