I've cast three charts for this question, the first had Saturn exactly conjunct the Ascendant - a sign that the Astrologer will be in error if he/she reads for it. The second had a very late degree of sign rising, a sign that that there will be problems with the reading. I decided that the problem was that I didn't understand the question as well as I had thought so I asked for some clarifications.
The final chart is attached and doesn't seem to have any serious considerations.
Sagittarius is rising, so you are signified by Jupiter. At the time I cast the chart yesterday, Jupiter was just about to leave his Detriment of Gemini and move into Cancer, which has since happened.
Thus the chart shows you in not good condition as a writer but there's a glimpse of something better to come. Jupiter is in the seventh House,so he's angular, he's also direct and fast, so you are well placed to take all the required actions to get the book into the public domain. The seventh is the house of 'other people', - all those who are 'not-you', unless they are friends or relatives.
Deciding on which house is signified by the book is a difficult question and probably the one that caused trouble. It could be fifth House - an outpouring of creativity, or it could be tenth House - something to make a mark socially and even a new career. or even second - something to generate income, or third house communication.
However, I've decided that it's more likely to be ninth. Lee Lehman in her Martial Art of Horary Astrology lists publishing as a ninth House activity. The ninth is also to do with those activities that stretch the mind to new levels and intellectual activities and Tony Louis links it with the creative manipulation and organisation of ideas. The activity of writing a book is of a different order of creativity than simply writing a letter or sending a text. Books do require the organisation of ideas and the manipulation of those ideas in order to tell a story, be it factual or fictional.
In the chart the ninth House cusp is in the last half a degree of Leo. This makes the Sun the significator of the book. The Sun is in Cancer, also in the seventh House. In Cancer the Sun has no essential dignity, the Sun is therefore Peregrine. The book is venturing out into the world with no clear idea of where it will go (at least metaphorically) or how it will be received. In short the book is very vulnerable, as indeed all first or early books are. Interestingly the Sun is in the exaltation of Jupiter, the book will do its best to bring you credit as an author. Also the Sun recently conjoined Jupiter in Gemini and having passed it, is now separating into the outside world (the conjunction is still in effect, if diminishing), as it nears the publishing stage. Finally the Sun is in a partile trine to Saturn, retrograde in the eleventh House of hopes and aspirations. The book carries your hopes with it, but Saturn has little strength, apart from its house position. Saturn is the planet of restriction and limitation, so I don't think you have high hopes for the book at the moment.
How will the book be received? If the question was simply confined to monetary gain from writing it, then the ninth would represent that gain. John Frawley uses the ninth to measure the profit from intellectual effort. However you have ruled that out as the criterion. Instead it's how it will be seen by the book reading public at large - the literary world.
I could use the seventh again, as the house of all and sundry (except your) but another contender is the tenth, which covers honours, preferment and status. It seems to me that the latter is more the issue here.
The MC is in Libra, so Venus is the significator of how the book will be received. Venus again is in Cancer, where it is the Triplicity ruler during the day, so at the time of the chart it had significant essential dignity. In terms of accidental dignity it is fast and direct but it's in the eighth House, which is one of the unfortunate houses. Planets in the eighth are inconjunct to the Ascendant (and hence the Descendant) and this is typified as a difficulty in seeing or being seen. That would suggest that the literary world will not 'see' the book, it just won't get noticed. In this case the house difference is not a sign difference - both Sun and Venus are in Cancer, but Venus is over 20 degrees ahead and moving further away, so effectively the same conclusion holds.
That's not what you want to hear but I can't see any better conclusion from the chart. Even if I had gone for the seventh as ruler of book readers, I'd have had to use Mercury which at the time of the chart was stationing Retrograde. It's also in Cancer in the eighth and still 19 degrees in front of the Sun, outside an acceptable range for a conjunction. would indicate.
Is there any hope at all here? Well the position of Jupiter says that things will improve in the future - so you may find that if this book does not have much success the experience will strengthen you for the next one. Don't be discouraged if things don't work out well, as it takes time to get established as an author. So you will get better! If not this time then next.
