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The Sun represents the Self, one's way of being in the world. It can represent, on different levels, both the ego and the higher Self or soul purpose. It rules Leo and is exalted in Aries. The Sun is the most important 'planet' in the chart and symbolizes one's will and sense of vitality. When the Sun is afflicted (poorly placed or poorly aspected) it could indicate problems with the father, or male role model. The Sun energizes your entire chart, and planets in close relationship to the sun (by planetary aspect) are emphasized in your personality. If your Sun is prominent in your chart, you will exhibit great power to do and to be.
The Sun is a star, a hot ball of glowing gases at the heart of our solar system. Its influence extends far beyond the orbits of distant Neptune and Pluto. Without the Sun's intense energy and heat, there would be no life on Earth. And though it is special to us, there are billions of stars like our Sun scattered across the Milky Way galaxy.
| Planet | Mass (10x24 kg) | Volume (10x10 km3 | Equatorial radius (km) | Polar radius (km) | Mean density (kg/m3) | Surface gravity (m/s2) | Surface acceleration (m/s2) | Escape velocity (km/s) |
| Sun | 1,989,100 | 1,412,000 | 696,000 | 696,000 | 1408 | 274.0 | - | 617.6 |
| Earth | 5.9736 | 108.321 | 6378.1 | 6356.8 | 5515 | 9.80 | 9.78 | 11.2 |
| Gregorian Year | Sun to Sun | the number of days in a given year of the Gregorian Calendar | 365 Days 5, Hours, 49 Minutes, 12 Seconds |
| Sidereal Year | Evelation to Evelation | time between maximum elevation passages of a fixed star | 365 Days, 6 Hours, 9 Minutes, 9,7632 Seconds |
| Tropical Year | Equinox to Equinox | mean interval between vernal equinox to vernal equinox | 365 Days, 5 Hours, 48 Minutes, 45,216 Seconds |
| Eclipse Year | Note To Node | An eclipse year is the time between node passages | +-346 Days, 14 Days, 52 Min, 54,48 Seconds |
| Anomalistic Year | Perihelion to Perihelion | The time from one Perihelion passage to another for the Earth. | 365 Days, 6 Hours, 13 Minutes, 52,464 Seconds |
Apparent diameter from Earth At 1 A.U.(seconds of arc) 1919.
Maximum (seconds of arc) 1952.
Minimum (seconds of arc) 1887.
Distance from Earth
Mean (10x6 km) 149.6
Minimum (10x6 km) 147.1
Maximum (10x6 km) 152.1
Surface Gas Pressure (top of photosphere): 0.868 mb
Effective temperature: 5778 K
Temperature at bottom of photosphere: 6600 K
Temperature at top of photosphere: 4400 K
Temperature at top of chromosphere: ~30,000 K
Photosphere thickness: ~400 km
Chromosphere thickness: ~2500 km
Sun Spot Cycle: 11.4 yr.
Photosphere Composition:
Major elements:
H - 90.965%
He - 8.889%
Minor elements (ppm):
O - 774, C - 330
Ne - 112, N - 102
Fe - 43
Mg - 35
Si - 32
S - 15
Technical Information courtesy of Nasa
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