Dreamers Make Magick Happen

Sun 
The Sun tells us of the actual core of a person, the inner self, of that which is of central concern. It also shows us the general vitality and the ability to assert oneself, it describes a general tone of being which colors everything else. 
Sign equivalent: Leo
Diameter: 1'390'000 km.
The Earth's orbit from Sun: 149'600'000km
Periode Earth - Sun: 365.25 Days

Moon 
The Moon represents our feelings and emotions, the receptivity, imagination and basic feeling tone of a person. It also has an effect on the sense of rhythm, time and timing, it influences our adaptability to change, our mobility and versatility. 
Sign equivalent: Cancer
Orbit from Earth: 384'000km
Period: 27.32 Days

Mercury 
Mercury represents reason, reasonableness (common sense), that which is rational. It stands for the spoken and written word, putting in order, weighing and evaluating, the process of learning and skills. 
Sign equivalents: Gemini and Virgo
Orbit from Sun: 57'910'000 km
Period: 88 Days

Venus 
Venus gives us a sense of beauty, the enjoyment of pleasure, aesthetic awareness, love of harmony, sociability, taking pleasure in relationships and eroticism. 
Sign equivalents: Libra and Taurus
Orbit from Sun: 108'200'000 km
Period: 225 Days

Mars 
Mars represents the energy and drive of a person, their courage, determination, the freedom of spontaneous impulse. It also describes the readiness for action, the way one goes about doing things as well as simple aggression. 
Sign equivalent: Aries
Orbit from Sun: 227'940'000 km
Period: 1,9 Years

Jupiter 
The search for individual meaning and purpose, optimism, hope and a sense of justice are represented by Jupiter. So also faith, a basic philosophy of life, the striving for spiritual growth and expansion. 
Sign equivalent: Sagittarius
Orbit from Sun: 778'330'000 km
Period: 11,9 Years

Saturn 
Saturn shows how we experience "reality", where we meet with resistance and discover our limitations. It represents the conscience and moral conviction, the laws and rules which we choose to obey. It also tells us about  our powers of endurance and the ability to concentrate, it lends qualities like earnestness, caution and reserve. 
Sign equivalent: Capricorn
Orbit from Sun: 1'429'400'000 km
Period: 29,5 Years

Uranus 
Uranus stands for intuition, it transmits sudden inspiration and lightning insights. An openness for all that is new, unknown and unusual. A sort of wrong-headed contrariness is also associated with this planet. It is said to be characteristic of astrology as such. 
Sign equivalent: Aquarius
Orbit from Sun: 2'870'990'000 km
Period: 84 Years

Neptune 
This planet gives us the supersensory, opens doors to mystical experience and the transcendental. On this level it is hard to discern where perception moves into deception, illusion and false appearances, and so Neptune is associated with all of these, with drugs and all kinds of pseudo-realities. 
Sign equivalent: Pisces
Orbit from Sun: 4'504'300'000 km
Period: 165 Years

Pluto 
Pluto describes how we deal with power, personal and non-personal, be it through suffering the power of others or exercising it ourselves. It describes how we meet the demonic and magical, our regenerative powers and our capacity for radical change and rebirth: the cycles of dying and becoming. 
Sign equivalent: Scorpio
Orbit from Sun: 5'913'520'000 km
Period: 248 Years"

"The angular relationships between the planets in a horoscope, measured as angles within the ecliptic circle, are termed “aspects”. Usually this includes angles to the ascendant and MC. Only certain angular relationships are regarded as aspects, and these are said to have intrinsic qualities – they are said to be “harmonic”, “dynamic” or “neutral”. These relationships influence how the planets work together. There is also a certain amount of “play”, which means that an aspect is said to “work” or be operative within a few degrees either way of being exact. This margin of “play” is defined by the orbs. (see below) 

Here are some of the major aspects:

Conjunction - 0° 
The conjunction tends to be a harmonious aspect. Its quality depends greatly on the planets involved, as well as on how close the aspect is. For example, a conjunction between the Sun and Mercury is generally regarded as harmonious. If, however, the distance between them is less than a few degrees, Mercury is said to be “burnt” or “in combustion”, with corresponding results. In general, the conjunction shows an immediate connection which usually works in one way or another. 

Opposition - 180° 
Although the opposition is generally regarded as “disharmonious” or dynamic, it often has quite a motivating and energizing effect. Here too, the quality of the aspect depends on the planets involved, and on what one makes of it. On the whole, an opposition between two planets creates tension between them, often with positive results. 

Square - 90° 
The square is regarded as a disharmonious aspect, the planets involved seem to be “blocked”. The problems that arise from the square keep on turning up, like a bad penny. The difficulty lies in trying to reconcile two forces that are trying to move in completely different directions. Usually this takes the form of desires and needs which are mutually exclusive. 

Trine - 120° 
The trine is a harmonious aspect, the planets involved work together in a complementary fashion, enriching one another. Trines show where our natural talents lie, whether we actually make use of them or not is up to us. 

Besides the major aspects mentioned above, there are also quite a number of “minor aspects”. Most of these are subdivisions of the major aspects. The minor aspects add depth and detail to the general picture. The orbs permitted for the minor aspects are much smaller than those used for the major aspects. (see table below) 
The most common minor aspects are 
 

The above information comes from this link

Biquintile - 144°, harmonious "

http://www.astro.com/astrology/in_aspect_e.htm