The Solar Constant For A Planet Is S

Due to the fact that the earth rotates around the sun and it s distance depends on the time of year the actual direct solar incidence that earth receives varies.

The solar constant for a planet is s.

Solar constant the total radiation energy received from the sun per unit of time per unit of area on a theoretical surface perpendicular to the sun s rays and at earth s mean distance from the sun. The sun subtends an angle theta at the planet. It is most accurately measured from satelli. Solar constant the total radiation energy received from the sun per unit of time per unit of area on a theoretical surface perpendicular to the sun s rays and at earth s mean distance from the sun.

The surface temperature of the sun is tk. It is measured on a surface perpendicular to the rays one astronomical unit au from the sun roughly the distance from the sun to the earth. It is presently calculated as being 1 366 w m2. The solar system is the gravitationally bound system of the sun and the objects that orbit it either directly or indirectly.

What is the surface temperature for a planet with no atmosphere with a solar constant of 2 718 w m 2 and an albedo of 0 6. The value of the constant is approximately 1 366 kilowatts per square metre. It is most accurately measured from satellites where atmospheric effects are absent. Since the values for the solar constant k s earth s albedo and the stefan boltzmann constant σ are all known it is possible to solve this equation for temperature t.

The solar constant includes all types of solar radiation other than neutrinos not just the visible light. Of the objects that orbit the sun directly the largest are the eight planets with the remainder being smaller objects the dwarf planets and small solar system bodies of the objects that orbit the sun indirectly the moons two are larger than the smallest planet. The solar constant g sc is a flux density measuring mean solar electromagnetic radiation solar irradiance per unit area. Earth s overall average albedo is about 0 31 or 31.

Using a little more algebra we can write the expression above as. The solar constant is the amount of solar radiation incidence that is received at a distance of 1 astronomical unit au from the sun.