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Illustration of colour distribution of the trans-Neptunian objects. Plotted by a program written by Eurocommuter. For reference, two moons: Triton and Phoebe, the centaur Pholus and planet Mars, are plotted in yellow (size not to scale).
Quaoar and Varuna with similar sizes and color indices are covering each other
- The position of an object represents the two colour indices
- horizontal axis V-B, blue colour index i.e. the difference in the magnitude of the object observed through a visual (green-yellow) and a blue filter
- vertical axis R-V, red colour index, the difference in the magnitude between red and visual filters
- colour (slightly enhanced) represents the hue of the object;
- the size of a sphere illustrates the object’s size relative to others.
- for a few large objects, the diameter drawn represents the current estimates (for known albedos)
- for all the others, the diameter represents the absolute (V) magnitude of the object.
[edit] Data Sources
- Color indexes from MBOSS base: Hainaut & Delsanti (2002) Color of Minor Bodies in the Outer Solar System Astronomy & Astrophysics, 389, 641 [1]
as of Mar. 13th, 2006
- Magnitudes from MPCORB as of Feb 14th, 2006
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| Date et heure | Dimensions | Utilisateur | Commentaire |
actuel | 26 mars 2008 à 19:13 | 450×300 (98 Kio) | Chesnok | |
| 25 mars 2006 à 13:05 | 450×300 (99 Kio) | Eurocommuter | |
| 24 mars 2006 à 16:13 | 450×300 (96 Kio) | Eurocommuter | |
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