File:Exoplanet Comparison PSR B1257+12 C.png

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English: Comparison of several possible sizes for the exoplanet PSR B1257+12 C with the Solar System planets Earth and Neptune, 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 PSR B1257+12 C without a significant H/He envelope
 
rocky terrestrial "Earth-like" planet, composed of 67% Fe, 32.5% MgSiO3
 
hypothetical pure iron planet, PSR B1257+12 C's theoretical smallest size

PSR B1257+12 C 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.

  1. 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.
  2. Open Exoplanet Catalogue (2015-11-14). Retrieved on 2015-11-14.
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Source Own work, incorporating public domain images for reference planets (see below)
Author Aldaron, a.k.a. Aldaron
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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.

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

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current21:57, 31 December 2009Thumbnail for version as of 21:57, 31 December 20091,040 × 480 (211 KB)Aldaron (talk | contribs){{Information |Description=TBD |Source={{own}} |Date= |Author= Aldaron |Permission= |other_versions= }}

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