Maximum size of a visible planet without effects on my world
I want to build a world where one planet could be visible from the sky, day and night with the naked eye periodically (like Earth's moon behavior) and not everywhere at the same time (since my world is a round-shaped planet too). My world would have a moon and a star/sun (both similar in relative size and distance of the Earth's).
The visual I want for my world is similar as the background image of this StackExchange. I want a planet as visible as the big white planet in the sky.
I'm wondering what could be the maximum size of the planet for it to have minimal impact on my planet. I'm looking for a way the planet would not have an impact on the day/night cycle or even too much impact on gravity (no apocalyptic event, minor events would be fine though) or even my world's climate.
For now, I think that for the planet to have the minimal impact would be for it not to be between my world and my sun. I don't want my planet to hide the star but I don't want either for it to reflect the sun too much by night (the planet could have a color not as reflective as white ?)
From there I want the planet to be as visible as possible for the creatures on my world.
This post was sourced from https://worldbuilding.stackexchange.com/q/108254. It is licensed under CC BY-SA 3.0.
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