Aqu. on the Asc. rules the querent, "Richard," and his main significator is Saturn. Co-significators are Mars (observing Lilly's 5 degree house cusp orb rule for Regiomontanus houses), Uranus, Jupiter (Pisces intercepted), Neptune, and the Moon.
The book to be published is a 3rd house item. Tau. on the cusp makes Venus the ruler. Luna in the 3rd makes it a co-ruler.
Publishing is a 9th house matter. Scorpio on the cusp makes Mars the primary significator, with Pluto a co-significator, and Venus, Mercury, and the Sun in the 9th co-rulers. Mercury also rules the 5th house of creative endeavors.
The chart is radical: Planetary hour is Saturn, which rules the Asc. Lights in 3rd and 9th describe querent's question.
Asc. ruler retrograde heading back towards 3rd cusp shows, perhaps, that querent is thinking about revising, rewriting, re-editing...
Despite some positive indications, the balance of them seem to suggest that the book in its current form or as it is currently conceived is not likely to get published. The querent did not provide any details, so I do not know if the book was already at a publisher (although Venus in the 9th would suggest it is). Saturn retrograde moving towards the 3rd suggests that the querent already has some doubts and is thinking about "revisiting" his project, somehow, which is a good idea, since the chart shows potential that is thwarted by debilitated planets. Sun and 9th co-ruler in the 10th are positive in terms of the querent's career, though, and suggest that despite current obstacles, he should regroup, rewrite, or rethink his ideas for his book, and then, perhaps, seek publication. To learn the success of that pursuit, however, would require another horary chart.