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Some basic solar properties are summarized in the table to the right. Some of
the quantities given there will be defined in subsequent chapters, but we
include the values here for a convenient reference.
Basic Solar Properties
|
| Diameter
(photosphere) |
1,391,980
km |
| Mass |
1.99 x
1033 g |
| Average
Density |
1.41
g/cm3 |
| Luminosity |
3.83 x
1033 erg/sec |
| Rotation
Period |
25 days
(equator) |
| Surface
Temperature |
5,800 K
(effective) |
| Spectral
Class |
G2 V
|
| Apparent
Visual Magnitude |
- 26.7
|
| Absolute
Visual Magnitude |
+ 4.8
|
| Mean
Distance (Earth) |
149,597,892
km | |
Many of these sites provide updates on solar
information and images on a daily or even more timely basis. Thus, they allow
almost real-time monitoring of the Sun for anyone with Web access.
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