| Observation
Data |
Mean distance
from
Earth
|
149.6×106
km
(92.95×106 mi)
(8.31 minutes at the Speed of Light) |
| Visual brightness
(V) |
-26.8m |
| Absolute magnitude |
4.8m |
| Orbital
Characteristics |
Mean distance from
Milky Way core |
2.5×1017 km
(26000 light-years) |
| Galactic period |
2.26×108 a |
| Velocity |
217 km/s |
| Physical
Characteristics |
| Diameter |
1.392×106 km
(109 Earths)
|
| Oblateness |
9×10-6 |
| Surface area |
6.09×1012 km²
(11 900 Earths)
|
| Volume |
1.41×1018 km³
(1 300 000 Earths)
|
| Mass |
1.9891×1030
kg
(332 950 Earths)
|
| Density |
1.408 g/cm³ |
| Surface gravity |
273.95 m s-2
(27.9 g)
|
Escape velocity
from the surface
|
617.54 km/s |
| Surface temperature |
5780 K |
| Temperature of corona |
5 MK |
| Core temperature |
~13.6 MK |
| Luminosity (Lsol) |
3.827×1026 W
3.9×1028 lm
or 100 lm/W efficacy |
| Mean Intensity (Isol) |
2.009×107 W
m-2 sr-1 |
| Rotation
Characteristics |
| Obliquity |
7.25°
(to the ecliptic)
67.23°
(to the galactic plane) |
Right ascension
of North pole 1 |
286.13°
(19 h 4 min 30 s) |
Declination
of North pole |
+63.87°
(63°52' North) |
Rotation period
at equator |
25.3800 days
(25 d 9 h 7 min 13 s) 1 |
Rotation velocity
at equator
|
7174 km/h |
Photospheric
Composition (by mass)
(All in the plasma state) |
| Hydrogen |
73.46 % |
| Helium |
24.85 % |
| Oxygen |
0.77 % |
| Carbon |
0.29 % |
| Iron |
0.16 % |
| Neon |
0.12 % |
| Nitrogen |
0.09 % |
| Silicon |
0.07 % |
| Magnesium |
0.05 % |
| Sulfur |
0.04 % |
