Intro and a Question About Ellipticity

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Discussion Overview

The discussion revolves around the calculation of a planet's ellipticity, specifically seeking an equation that incorporates a planet's density, volumetric mean radius, and rotational period. The context includes personal experiences with data loss and the search for resources related to astronomy and astrophysics.

Discussion Character

  • Exploratory
  • Homework-related

Main Points Raised

  • One participant expresses a desire to find a specific website that contained an equation for calculating a planet's ellipticity, along with other planetary data.
  • Another participant suggests that similar equations might be found elsewhere and questions the difficulty of locating them.
  • A third participant points to Wikipedia's page on "Equatorial Bulge" as a potential resource for the information sought.

Areas of Agreement / Disagreement

The discussion does not reach a consensus on the specific website or equation, but participants provide suggestions and resources that may help in the search.

Contextual Notes

There is an implied uncertainty regarding the availability of the specific equation and the reliability of alternative resources suggested by participants.

Who May Find This Useful

Amateur astronomers, astrophysicists, and individuals interested in planetary science and calculations related to celestial bodies.

arakish
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My first post here. And I am wondering why I never found this forum before now... :blushing:

I am an amatuer astronomer and astrophysicist in the truest sense. I have been interested in astronomy and astrophysics since watching ST:TOS when it first aired back in the 60s. I have also been interested in geography and cartography for the same length of time.

Without writing a novella, I am going straight to my question.

I suffered a severe HDD crash at the end of February. Like a dumb retard, I never kept backups. Some time back, I had found a website that listed an equation that would calculate a planet's ellipticity if one knew the planet's density, volumetric mean radius, and rotational period. I even wrote a program that would calculate this along with the planet's surface gravity, ballistic escape velocity, total surface area, equatorial mean radius, polar mean radius, mass, volume, and other data.

I have been searching the web trying to find this website again for the last two months. However, I have not been able to find it again.

My question: Anyone know of this website (or similar) and can me direct there? Or does anyone here know the equation?

Thanks for any help and for your valuable time spent reading and/or replying.

rmfr
 
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Wish I could help you. Can you not find all of those equations somewhere else listed by themselves or something? I wouldn't expect it to be too difficult to find them again, even if you don't find that original website.
 
arakish said:
Some time back, I had found a website that listed an equation that would calculate a planet's ellipticity if one knew the planet's density, volumetric mean radius, and rotational period.
The wikipedia http://en.wikipedia.org/wiki/Equatorial_bulge" s.
 
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IsometricPion said:
The wikipedia http://en.wikipedia.org/wiki/Equatorial_bulge" s.

Thank you very much IsometricPion. I never thought of doing a search on "Equatorial Bulge."

I guess for being somewhat smart, I can be a dummy. Thanks again.

rmfr
 
Last edited by a moderator:

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