English: Infographic showing the sizes, colors, and albedos of the largest (>100 km diameter) centaurs with measured diameters as of 2025, plus a few selected notable centaurs below 100 km. In this graphic, only centaurs that orbit between Jupiter and Neptune (the "classical" definition) are shown. "True" colors and albedos (according to the human eye) are calculated from MBOSS and SMASS color indices and spectra for each centaur using the TrueColorTools software. Elongated centaurs are represented as ellipses with their longest (a) and shortest/polar (c) axes. For elongated centaurs that only have single diameters listed (e.g. Pholus), their minimum elongations (a/b) are calculated from their maximum light curve amplitude (Δm) via the equation (a/b) = 10^(Δm/2.5), and the resulting ellipse is scaled so that its area is equal to that of the single diameter. The rings of Chariklo and Chiron are colored white, but are made transparent according to their opacities (calculated from normal optical depth (τ) via the formula 1-e^(-τ) ) A scale bar is shown at the bottom left.

Sources:
Chariklo

• a/c dimensions & albedo: https://ui.adsabs.harvard.edu/abs/2021A&A...652A.141M
• ring radii & opacities: https://arxiv.org/abs/2411.07026

Chiron

• a/c dimensions: https://ui.adsabs.harvard.edu/abs/2023PSJ.....4..221S
• albedo: https://arxiv.org/abs/2308.10042
• ring structure & opacities (2022): https://arxiv.org/abs/2308.03458

2002 GZ32

• a/c dimensions & albedo: https://ui.adsabs.harvard.edu/abs/2021MNRAS.501.6062S

Bienor

• a/c dimensions: https://meetingorganizer.copernicus.org/EPSC-DPS2025/EPSC-DPS2025-518.html
• albedo: https://ui.adsabs.harvard.edu/abs/2024A&A...689A..82R

2005 RO43, 2003 WL7, Amycus, 2003 CO1, 2006 SX368, Hylonome, 2008 FC76

• diameter & albedo: https://ui.adsabs.harvard.edu/abs/2014A&A...564A..92D

Asbolus and Thereus

• diameter & albedo: https://ui.adsabs.harvard.edu/abs/2014A&A...564A..92D
• a/b ellipse dimensions calculated from lightcurve amplitude (Δm) given in page 4.

Pholus

• diameter & albedo: https://ui.adsabs.harvard.edu/abs/2014A&A...564A..92D
• a/c ellipse dimensions from https://ui.adsabs.harvard.edu/abs/2005Icar..175..390T, but scaled down to fit the more recently-measured area-equivalent diameter & albedo

Echeclus

• a/c dimensions & albedo: https://ui.adsabs.harvard.edu/abs/2024MNRAS.527.3624P/abstract

29P/Schwassmann-Wachmann

• diameter & albedo of 0.04: https://ui.adsabs.harvard.edu/abs/2022A%26A...664A..95B/abstract