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For the following planet/moon system, how high would the tides be assuming the planet is reasonably Earthlike?

As a first approximation, the mid-ocean tides raised on this planet range from a minimum of 48.8 cm to a maximum of 81.4 cm. This tidal range, unlike on Earth, is dominated by stellar gravitation rather than the gravitational effect of its satellite(s). The smaller satellite (Moon-1) contributes a maximum of 2.7 cm to the mid-ocean tide, Moon-2 contributes a maximum of 29.9 cm to the mid-ocean tide, while the stellar primary contributes 48.8 cm to the total. This presumes that the stellar primary is essentially identical to Sol and that the densities of the two satellites are identical to that of Luna. The actual mid-ocean tide height for any given time depends on the orbital dynamics of the star-planet-satellite(s) system.

As is the case with all things, your mileage may vary,

Radtech

For reference, how much is Earth's tides?

Also, the planet is orbiting Alpha Centauri B, not Alpha Centauri A, as your post seems to imply.

PlutonianEmpire wrote:For reference, how much is Earth's tides?

Also, the planet is orbiting Alpha Centauri B, not Alpha Centauri A, as your post seems to imply.

You are, of course, correct in your observation that I assumed a Sol-like star (a result of late-night mis-reading).

For reference, the mid-ocean tides on Earth are 54 cm for those caused by Luna and 25 cm for those caused by Sol.

For Alpha Centauri B, the tides raised by the star are 43.9 cm at periastron and 41.7 cm at apastron. The satellite-induced mid-ocean tides were calculated for their semi-major axes, and so do not reflect their closest and most distant approaches to the planet (though neither has an eccentricity that would significantly change their respective tide heights, IMHO).

Sorry for the mix-up.

Radtech

It's okay.

Thank you for your help.