Vesta, keeper of the sacred hearth-fire, represents devotion and single-pointed focus. Her placement shows what you are willing to dedicate yourself to wholly - the work, practice, or calling that you tend like a flame - and where you draw on a private, self-renewing source of commitment.
The astronomy in these guides is computed, not copied: sign boundaries, aspect angles and planetary positions are calculated on StarBind's own servers from the same JPL planetary data NASA uses, accurate to fractions of an arcsecond.