Astrophysics: question about nearly resonant orbits

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Homework Help Overview

The discussion revolves around the concept of nearly resonant orbits in astrophysics, specifically focusing on the orbital periods of planets in the 55 Cancri system and their potential resonances.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to determine if the orbital periods of planets 55 Cancri b and c indicate a resonance by calculating their period ratio. They also question the resonance status of another planet with a different period.

Discussion Status

Participants are engaging in exploratory reasoning, with one participant prompting further thought on the conditions for resonance. There is a mention of known resonances in other celestial bodies, which may provide context for the discussion.

Contextual Notes

The original poster is working under the constraint of a two to three percent tolerance for determining resonance, which is a key aspect of their inquiry.

leonne
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astrophyscs: question about nearly resonant orbits

Homework Statement


are any planets in low-integer resonant or nearly resonant (within two or three percent) orbits

Homework Equations



p2/p1

The Attempt at a Solution


ok suppose to find for the planets of 55cancri so like 55cancri b has period of 14.6516 and c has 44.3446 so just do 44.3446/14.6516 and got 3.02 so would that mean these two are in resonant with each other? Also found another one but its 356.14 would this one also be in resonant or are they a little to much off? says within two or three percent.
 
Physics news on Phys.org


What has to be within two or three percent? If you think about this, you'll have your answer.
 


Jupiter's moons Io, Europa, and Ganymede are in a 1:2:4 orbital resonance.
 


ok thxs for the info ill check it out later
 

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