Background

In my story, HD 28185 star system harbors life. One of them is a jovian HD 28185 d (Subralis), located around 1AU of this sun-like star. In-universe, Subralis is approximately 132,000 kilometers in diameters with around six times the mass of jupiter. Its atmosphere should contains water-methane-hydrogen mixtures.

Question

What is required to make the planet to appear white-blue-ish with white clouds, if the aforementioned settings fail to produce target coloration as posed in this question? A nice fine-tune of its atmosphere's compositon would be appreciated.

Restrictions

1. This planet should contains water vapors at its atmosphere
2. Methane mixtures could be added at the atmosphere, as long as it doesn't affect the desired coloration
3. Hydrogen could be added to its atmosphere, as long as it doesn't affect the desired coloration

Edits:

Replacing 420,000 kilometers to 132,000 kilometers, to make the size believeable

posted over 9 years ago

Hendrik Lie‭

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