USO_Atlas_Solar Properties

Solar Properties
Mean distance from Earth ( the Astronomical Unit, 1 A.U.) :	= 1.496 x 10¹³cm = 214.94 R _☉ = 8.3 light- minutes
Surface gravity : g_☉	= (2.738 ± 0.003) x 10⁴cm/sec² =28 g _⊕
Total Energy output (luminosity) L_☉:	= (3.86 ± 0.03) x 10³³erg/sec = (3.86 ± 0.03) x 10²⁶ W
Mass M_☉ :	= (1.991 ± 0.02) x 10³³gm = 3.33166 x 10⁵ M _⊕
Radius R_☉ :	= (6.960 ± 0.001) x 10⁵km = 109 R _⊕
Mean density P_☉:	= (1.410 ± 0.002) x 10⁵ gm/cm³
Effective Surface Temperature T_eff:	=5780 ± 50 K
Solar Constant :	=1.99 cal.cm^-2 min^-1
Stellar magnitude (Photovisual) :	= - 26.73 ± 0.03
Absolute magnitude (Photovisual) :	= + 4.84 ± 0.03
Inclination of axis of rotation to ecliptic :	= 7°
Rotation period about Sun's axis :	About 27 days; the Sun does not rotate as a solid body; it exhibits a systematic increase in period from 25 days at the equator to 31 days at the poles.
Distance from galactic centre :	= 8200 pc = 26744.9 light years
Distance above galactic plane :	= 8 pc
Solar motion about galactic centre :	= 220 km sec^-1
Period of revolution around galactic centre :	= 2.2 x 10⁸years

Udaipur Solar Observatory ( USO )