Yes, that is who, not what. Pagans and Wiccans are very familiar with this way of
thinking - you will notice I usually refer to planets as He or She rather than it.
The planets are associated with Deities, taking their names from mythology. In Wiccan
terms each one is a face of the God or the Goddess. In polytheistic Pagan terms they
are different Gods and Goddesses.
If you are more comfortable with non-spiritual way of thinking, you can think of
them as very influential people.
However you look at it, the planets have a personality, and certain areas of rulership.
The aspects tell us where there is cooperation or disagreement. The signs describe
the mood - or method of expression. The houses tell us where that planet has taken
up residence (in a birth chart) or where they are currently traveling (in transit).
If you put it all together, you see a kind of story developing - your story.
WHAT ABOUT ASTEROIDS?
The asteroids function (astrologically) just like planets, though less powerful.
Some astrologers do not use them at all, and some use asteroids extensively. Despite
being less potent influences, the asteroids can provide invaluable details and depth
- particularly in psychological, or spiritual astrology. They are more connected
with the non-tangible realms of life.