That's a great observation about f58r. Indeed, it seems to introduce three classes of "Voynich stars":
a) six-pointed, ochre in the centre
b) seven-pointed, circle in the centre
c) eight-pointed, circle in the centre
Next step would be to carefully check f68r1 and r2 to see whether the charts are comprised of these three classes exclusively. A quick glance shows me that in respect to the unlabeled circumference stars in f68r2 that's not true: e.g. there are seven-pointed ochre-centered stars. But the circumference may be decorative only. However, there is e.g. a seven pointed ochre star there (ochory).
But, if I'm not mistaken, we have some folios lost after f58v?
About the tail, I'm not so sure that it relates to a class, because tails are belonging to different stars in the Zodiac section.
I also would be careful about charts representing star maps. Voynich "stars" may represent not actual stars, but something different. However, this separation into classes may provide further hints.
a) six-pointed, ochre in the centre
b) seven-pointed, circle in the centre
c) eight-pointed, circle in the centre
Next step would be to carefully check f68r1 and r2 to see whether the charts are comprised of these three classes exclusively. A quick glance shows me that in respect to the unlabeled circumference stars in f68r2 that's not true: e.g. there are seven-pointed ochre-centered stars. But the circumference may be decorative only. However, there is e.g. a seven pointed ochre star there (ochory).
But, if I'm not mistaken, we have some folios lost after f58v?
About the tail, I'm not so sure that it relates to a class, because tails are belonging to different stars in the Zodiac section.
I also would be careful about charts representing star maps. Voynich "stars" may represent not actual stars, but something different. However, this separation into classes may provide further hints.