Talk:HD 4208

moons too cold?

the article http://www.physorg.com/news65376545.html mentiones that in this paper http://www.arxiv.org/abs/astro-ph/0604413 "Scharf finds that an Earth-sized moon could reach habitable temperatures about twice as far from the Sun as the Earth itself, under favorable assumptions." So its not clear that a moon system of this planet necessarely would be cold like the Jovian; this depends on enough eccentriciy of the orbits of such hypothetical moons, and there being a moon system that would make such eccentric orbits stable (like in the Jovian system). However, given the size of the planet, this paper http://www.nature.com/nature/journal/v441/n7095/abs/nature04860.html would suggest its not likely such large moons would exist here (and they certainly need to be larger than tenth of the size of earth to have substantial enough atmosphere). Still this is rather speculative. --89.172.84.10 10:43, 31 May 2007 (UTC)