# The Planet Mean Surface Temperature Equation: Tmean = [ Φ (1-a) S (β*N*cp)¹∕ ⁴ /4σ ]¹∕ ⁴

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### The 288 K - 255 K = Δ 33°C difference does not exist

Earth’s Without-Atmosphere Mean Surface Temperature Equation Tmean.earth is:

Tmean.earth = [ Φ (1-a) So (β*N*cp)¹∕⁴ /4σ ]¹∕⁴

Τmean.earth = [0,47(1-0,306)1.361 W/m²(150 days*gr*oC/rotation*cal *1rotations/day*1 cal/gr*oC)¹∕⁴ /4*5,67*10⁻⁸ W/m²K⁴]¹∕⁴ =

Τmean.earth = [0,47(1-0,306)1.361 W/m²(150*1*1)¹∕⁴ /4*5,67*10⁻⁸W/m²K⁴]¹∕⁴ =

Tmean.earth = 287,74 Κ

And we compare it with the

Tsat.mean.earth = 288 K, measured by satellites.

These two temperatures, the calculated one, and the measured by satellites are almost identical.

When I saw the Earth’s both the measured by satellites and the calculated by Equation temperatures being 288 K, I felt extremely well and satisfied.

It was a nice feeling. It was a discovery, it worked and it was promising sigh, and the Δ 33°C difference did not exist.

The Tsat.mean.earth - Te.earth = 288 K - 255 K = Δ 33°C difference does not exist.

The first thing I had to do was to check the Equation on some other planets. And it didn’t take me too long to realize that a Planet-Without-Atmosphere Mean Surface Temperature Equation was working on all the planets and moons without atmosphere in the solar system.

I dare to assume now that this Equation works for all planets and moons without atmosphere in the universe…

Tmean.planet = [ Φ (1-a) S (β*N*cp)¹∕⁴ /4σ ]¹∕⁴  (1)

The Planet Mean Surface Temperature Equation successfully calculates planets mean temperatures.