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Omni Rex Draconis
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quote: Does anyone want to help me with my question about the moon that I created -- Vigon? |
Sure - what was the question?
I would have to see the revised data for Hearthena to know whether the moon is in a "proper" orbit. Nevertheless, with a larger planet and moon, the tides are going to be quite a bit larger.
The moon is going to be tidally locked like ours, given the presence of a large ocean and a tight orbit. I wouldn't worry about the planet's rotation slowing down. It will, but as a planet's initial spin is random, you can still have a day be whatever length you desire (though the tendancy will be for the month and day to move closer together in length as the system ages).
The phases of Vigon will be the same as Luna's, assuming that it orbits in the same plane as the planet's orbit.
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MrFun
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of Iowa
Nov 2000 time: 23:18
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quote: Originally posted by MrFun
I have just created the specs for Hearthena's only satellite and here, I provide Luna's specs for the purpose of contrast.
Satellite: Luna
Distance from Earth: 384,400 km
Diameter: 3,476 km
Mass: 7.35e22 kg
Vigon
Distance from Hearthena: 362,800 km
Diameter: 4,650 km
Mass (1 = Luna’s mass): 1.15
The specs for Hearthena are already provided for in the OP. So would Vigon and Hearthena have a stable astrophysical relationship? In other words, with the specs I created, can Vigon safely orbit around Hearthena? And to what kind of oceanic tides would be expected? To what extent does Vigon slow down Hearthena's rotation?
I guess now I should find a way to diagram Vigon's different phases as they would appear for Hearthena's inhabitants. What is the simplest way to go about this without completely disregarding believability? |
Omni, here is the info on Vigon. And below is the revised specs for Hearthena.
Hearthena (1) = Earth
Planet Type: terrestrial
Age: 3.5 billion years
Distance from Lusteron (1): 1.37 AU (average distance in elliptical orbit)
Axis Tilt (23.58 degrees): 21.7 degrees
Diameter (1): 1.25 or 15,945.375 kilometers
Density: (5.52): 6.7
Mass (1): 0.95
Surface Gravity (1): 1.18 (150 pounds on Earth = 170 pounds on Hearthena)
Length of one completed orbit (1): 1.43 years or 16 months
Length of one rotation (1): 27 hours resulting in about 433 days
I simplified the calculation of surface gravity by simply multiplying diameter and mass. Even if this is less accurate, I think it would still suffice for my novel.
So share any thoughts about Vigon's physics with Hearthena.
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