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  2. Albedo - Wikipedia

    en.wikipedia.org/wiki/Albedo

    A typical comet nucleus has an albedo of 0.04. [68] Such a dark surface is thought to be indicative of a primitive and heavily space weathered surface containing some organic compounds. The overall albedo of the Moon is measured to be around 0.14, [69] but it is strongly directional and non-Lambertian, displaying also a strong opposition effect ...

  3. Standard asteroid physical characteristics - Wikipedia

    en.wikipedia.org/wiki/Standard_asteroid_physical...

    The table shows that for bodies in the asteroid albedo range, the typical difference between Bond and geometric albedo is 20% or less, with either quantity capable of being larger. Since the calculated temperature varies as ( 1 − A ) 1 4 {\displaystyle (1-A)^{1 \over 4}} , the dependence is fairly weak for typical asteroid A ≈ p ...

  4. Cloud albedo - Wikipedia

    en.wikipedia.org/wiki/Cloud_albedo

    Cloud albedo is a measure of the albedo or reflectivity of a cloud. Clouds regulate the amount of solar radiation absorbed by a planet and its solar surface irradiance . Generally, increased cloud cover correlates to a higher albedo and a lower absorption of solar energy .

  5. Absolute magnitude - Wikipedia

    en.wikipedia.org/wiki/Absolute_magnitude

    At last quarter, the Moon is about 0.06 mag fainter than at first quarter, because that part of its surface has a lower albedo. Earth's albedo varies by a factor of 6, from 0.12 in the cloud-free case to 0.76 in the case of altostratus cloud. The absolute magnitude in the table corresponds to an albedo of 0.434.

  6. Reflective surfaces (climate engineering) - Wikipedia

    en.wikipedia.org/wiki/Reflective_surfaces...

    Solar reflectance, also known as albedo, is the ability to reflect sunlight. It is expressed either as a decimal fraction or a percentage. A value of 0 indicates that the surface absorbs all solar radiation, and a value of 1 (or 100%) represents total reflectivity. Thermal emittance is the ability to emit absorbed heat. It is also expressed ...

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  8. Geometric albedo - Wikipedia

    en.wikipedia.org/wiki/Geometric_albedo

    In astronomy, the geometric albedo of a celestial body is the ratio of its actual brightness as seen from the light source (i.e. at zero phase angle) to that of an idealized flat, fully reflecting, diffusively scattering disk with the same cross-section.

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