File:Exoplanet Comparison Gliese 581 e.png

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Summary

DescriptionExoplanet Comparison Gliese 581 e.png	English: Comparison of several possible sizes for the exoplanet Gliese 581 e with the Solar System planet Earth, using approximate models of planetary radius as a function of mass^[1] for several possible compositions, based on mass reported in the Open Exoplanet Catalogue^[2] as of 2015-11-14. Models include: water world with a rocky core, composed of 75% H₂O, 3% Fe, 22% MgSiO₃ hypothetical pure water (ice) planet, the largest size for Gliese 581 e without a significant H/He envelope rocky terrestrial "Earth-like" planet, composed of 67% Fe, 32.5% MgSiO₃ hypothetical pure iron planet, Gliese 581 e's theoretical smallest size Gliese 581 e is not likely to be smaller than the iron planet, and will be considerably larger than the water planet if significant H or He is present. For non-transiting planets, all modeled sizes will be underestimates to the extent that the planet's actual mass is larger than the reported minimum mass. ↑ Seager, S.; M. Kuchner, C. A. Hier-Majumder and B. Militzer (2007). "Mass–radius relationships for solid exoplanets". The Astrophysical Journal 669: 1279–1297. DOI:10.1086/521346. Retrieved on 2015-11-14. ↑ Open Exoplanet Catalogue (2015-11-14). Retrieved on 2015-11-14.
Date	31 December 2009
Source	Own work, incorporating public domain images for reference planets (see below)
Author	Aldaron, a.k.a. Aldaron
Other versions	Related graphs Exoplanet discoveries, by year; color-coded by discovery method Scatter plot of exoplanet period and mass data; color-coded by discovery method Exoplanet mass-radius scatter plot, emphasizing super-Earths

This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Resizing to produce appropriately scaled Earth comparison image. The original can be viewed here: The Earth seen from Apollo 17.jpg: . Modifications made by Aldaron.

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File history

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	Date/Time	Dimensions	User	Comment
current	21:49, 31 December 2009	1,040 × 480 (199 KB)	Aldaron	Upload bug
	21:47, 31 December 2009	1,040 × 480 (199 KB)	Aldaron	After really changing Earth upper bound to 1.6
	21:45, 31 December 2009	1,040 × 480 (211 KB)	Aldaron	After changing Earth upper bound to 1.6
	17:03, 31 December 2009	1,040 × 480 (211 KB)	Aldaron	Test new graphics styles
	06:41, 31 December 2009	1,040 × 480 (207 KB)	Aldaron	Test increased line brightness
	06:34, 31 December 2009	1,040 × 480 (205 KB)	Aldaron	{{Information \|Description=TBD \|Source={{own}} \|Date= \|Author= Aldaron \|Permission= \|other_versions= }}