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...

Albedo (/ælˈbiːdoʊ/ al-BEE-doh; from Latin albedo 'whiteness') is the fraction of sunlight that is diffusely reflected by a body. It is measured on a...

reliable data for measuring their Bond albedo comes from spacecraft. The Bond albedo (A) is related to the geometric albedo (p) by the expression A = p q {\displaystyle...

of albedo such as the geometric albedo, which can be above 1. In general, though, the Bond albedo may be greater or smaller than the geometric albedo, depending...

extremely low geometric albedo measured in 2011, making it the darkest known exoplanet. If the entire day–night contrast were due to geometric albedo, it would...

satellites are calculated from their absolute magnitudes with an assumed geometric albedo of 0.04, which is the average value for that population. Masses of...

these categories are subject to change with further evidence. The geometric albedo A {\displaystyle A} is calculated from the measured absolute magnitude...

Varuna is dark, with a measured geometric albedo of 0.127 based on thermal observations in 2013. Varuna's geometric albedo is similar to that of the possible...

12.1, which can be used to estimate the moon's diameter. Assuming a geometric albedo range of 0.04–0.10 that is typical for most irregular moons, S/2021...

visual wavelengths) in the Solar System, with a visual geometric albedo of 1.34. This very high albedo is the result of the sandblasting of particles from...

were the first ever to have their reflectivity (or geometric albedo) measured. The geometric albedos of Spica A and B are, respectively, 3.61 percent and...

13.7, which can be used to estimate the moon's diameter. Assuming a geometric albedo range of 0.04–0.10 that is typical for most irregular moons, S/2023...

known about Puck aside from its orbit, radius of about 81 km, and geometric albedo in visible light of approximately 0.11. Of the moons discovered by...

their disappearance in 2001 (when the rings were edge-on). Also, the geometric albedo of Chiron's rings as determined by spectroscopy is consistent with...

planets. Salacia is at the upper end of this size range and has a very low albedo, though Grundy et al. later found it to have the relatively high density...

magnitude of 0.05. Makemake has a highly reflective surface with a geometrical albedo of 0.82±0.02. The rotation period of Makemake is estimated at 22.83...

with the IRAS observatory give a diameter of 145.70 ± 5.89 km and a geometric albedo of 0.03 ± 0.01. By comparison, the MIPS photometer on the Spitzer Space...

a geometric albedo of 0.19±0.02. By comparison, the MIPS photometer on the Spitzer Space Telescope gives a diameter of 88.30±8.51 km and a geometric albedo...

depends on the assumed albedo (reflectivity); if it is a darker object then it would also have to be larger; a higher albedo would demand that it be...

11.2, which can be used to estimate the moon's diameter. Assuming a geometric albedo range of 0.04–0.10 that is typical for most irregular moons, S/2002...

and Spitzer Space Telescope give a diameter of 768+39 −38 km and a geometric albedo of 0.112+0.012 −0.011. ESO analysis of spectra reveals a strong red...

derive other albedo and scattering properties, such as the geometric albedo, the phase integral, and the Bond albedo. Albedo Geometric albedo Bidirectional...

occultation was recorded on 14 January 2022; full results on size, shape, geometric albedo, and the spin-axis orientation have not been released[needs update]...

a highly elongated body with radii of ~200×20 m when a comet-like geometric albedo of 0.04 is assumed. Here we report spectroscopic characterisation of...

710 km (440 mi), with an optical absolute magnitude of 3.77 and a geometric albedo (reflectivity) of 0.11. Compared to Pluto and its moon Charon, Ixion...

more uniform light back at low phase angles. The definition of the geometric albedo p {\displaystyle p} , a measure for the reflectivity of planetary surfaces...

with the IRAS observatory give a diameter of 101.72 ± 5.18 km and a geometric albedo of 0.06 ± 0.01. By comparison, the MIPS photometer on the Spitzer Space...

likely lies between 400–600 km (250–370 mi) in diameter assuming a geometric albedo range of 0.10–0.25. Sheppard estimates that 2018 AG37's diameter lies...

(V-band) geometric albedo largely comes from the unknown level of thermal contamination by cometary dust surrounding the nucleus. The lower-limit albedo 0.033±0...

that of Earth's moon and a bit more than Saturn's moon Enceladus. The geometric albedo of Gǃkúnǁʼhòmdímà is approximately 0.15, and its bulk density is approximately...