Lunar Reflection and Emission of Radiation
This table of information is adapted with permission from
NASA's Planetary Fact Sheets and
The Nine Planets.
Bond albedo 0.067 0.174
Visual geometric albedo 0.12 0.327
Visual magnitude V(1,0) +0.21
Solar irradiance 128.2 W/ft2 (1380 W/m2) 1.000
Black-body temperature 494.1 R (274.5 K) 1.110
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contributors. All rights reserved.
- Bond albedo
- The fraction of incident solar radiation reflected back into space
without absorption; dimensionless; also called planetary albedo
- Visual geometric albedo
- The ratio of the body's brightness at a phase angle of zero to the
brightness of a perfectly diffusing disk with the same position and
apparent size; dimensionless
- Visual magnitude V(1,0)
- The visual magnitude of the body if it were one AU from the Earth at
a phase angle of zero; dimensionless
- Solar irradiance
- Solar energy impinging on the body; watts per square meter. 1380 W/m2 = 128.2 W/ft2.
- Black-body temperature
- Equivalent black body temperature is the surface temperature the body
would have if it were in radiative equilibrium and had no atmosphere,
but the same albedo; in degrees Kelvin. (Kelvin is measured from
absolute zero, in increments equal to degrees C. The English system
equivalent is Rankine, R. Zero degrees K = -273.16 deg C, or -459.7 deg F.
One increment C = 1.8 increments of F, so 274.5 K = 494.1 R = 34.4 deg F.)
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Updated Sun, Jul 26, 1998.