Talk:Kepler-453b

Mass needs better evidence.

A density 4 times that of air for a planet wider than Neptune is rather in need of better evidence, theoretical modeling, etc. I strongly suspect that this is the result of a typographical error or similar, as a giant ball of light air simply wouldn't hold together. The escape velocity is sqrt(2*G*m/r). The square root of (2*6.67e-11 * 1.2e24 / 35000000) is 2139 m/s. That means gases like hydrogen, helium, nitrogen, oxygen, water, methane and argon would all float off into space at anything near room temperature.

Such an object should mass 0.2 Jupiter masses, not 0.2 Earth masses. That would give it a density of about 1.5 kg/liter. Much more in line with reasonable assumptions about composition. Please find a better source or remove density information.

Being diligent, apparently moreso than NASA or anyone who bothered to check I read the original paper. Mass of 0.1.. Plus or minus 16 earth masses at 1 SD confidence. That's like saying I'm a centimeter tall.. Plus or minus 2 meters at one SD confidence. Unless someone can say where this 0.2 number came from, it ought to read inconclusive.

Furthermore, one of the links on the NASA site yields a mass of 0.03 Jupiter masses. More or less 10 Earth masses. This value is much more reasonable, although we really can't say either way.

— Preceding unsigned comment added by 67.189.127.160 (talk) 10:49, 29 December 2015 (UTC)