Luminary
Sun
What you are here to become.
In a birth chart, Sun describes your core self — identity, vitality, what you are here to become.
What it actually is
A G-type main-sequence star holding 99.86% of the solar system's mass. Light from its surface takes about 8 minutes 20 seconds to reach us.
In a chart: About a month in each sign — this is your familiar “star sign”.
How Sun is read
At its best
A clear sense of what you are for. Warmth that other people organise themselves around, and the confidence to be looked at while you are still learning.
The difficult end
Needing the room to agree you are the point of it. Pride that will not let a thing be done badly in public, and so never lets it be started.
What to do with it
Do the thing that is yours in a way that can be seen. The Sun is not modest and does not need to be.
What Sun rules
Traditionally Sun rules Leo. If one of those is your rising sign, Sun is your chart ruler — the planet a traditional reading treats as standing for you.
The metal of Sun
Gold Au
Gold does not tarnish, which is why antiquity gave it to the Sun. Read as the part of you that stays itself under pressure — visible, warm, and difficult to corrode.
The other chart bodies
Where is Sun in your chart?
Its sign says how it acts; its house says where in your life it acts. Both come from real positions at your birth moment.