### 2. Moon’s Effective Temperature Calculation

**2. Moon’s Effective Temperature Calculation:**

**So = 1.362 W/m² (So is the Solar constant)**

**Moon’s albedo: amoon = 0,136**

**Moon’s sidereal rotation period is 27,3216 days. But Moon is Earth’s satellite, so the lunar day is 29,5 days**

**Moon does N = 1/29,5 rotations/per day**

**Moon is a rocky planet, Moon’s surface irradiation accepting factor Φmoon = 0,47**

**(Accepted by a Smooth Hemisphere with radius r sunlight is S* Φ*π*r²*(1-a), where Φ = 0,47)**

**cp.moon = 0,19cal/gr oC, moon’s surface is considered as a dry soil**

**β = 150 days*gr*oC/rotation*cal – it is a Rotating Planet Surface Solar Irradiation Absorbing-Emitting Universal Law constant**

**σ = 5,67*10⁻⁸ W/m²K⁴, the Stefan-Boltzmann constant**

**Moon’s Effective Temperature Complete Formula Te.moon:**

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

**Te.moon = { 0,47 (1-0,136) 1.362 W/m² [150* (1/29,5)*0,19]¹∕ ⁴ /4*5,67*10⁻⁸ W/m²K⁴ }¹∕ ⁴ =**

**Te.moon = 221,74 Κ**

**The newly calculated Moon’s Effective Temperature differs only by 0,8% from that measured by satellites!**

**Tsat.mean.moon = 220 K, measured by satellites.**