Physical properties of objects that orbit each other in the universe

In summary, we can determine the mass of objects that orbit each other in the universe, and depending on the orientation of their orbits, we can also potentially measure other physical properties such as radius, luminosity, temperature, and composition of any extended atmosphere.
  • #1
judi6070
5
0
A question from my asronomy class...

Given that we are able to measure positions, velocities and timescales of objects in our universe, what sort of physical properties can we determine for objects that orbit each other in the universe?

I have tried reading through my textbook for ideas and have come up with nothing... any ideas would be greatly appreciated!

Thanks!
 
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  • #2
We can measure mass. The more massive, the quicker they orbit.
 
  • #3
Depending on how the orbits are oriented, wrt us here on Earth, lots of other physical properties become amenable to measurement (albeit, with caveats). For example: radius (of each object), luminosity (ditto), temperature (ditto), limb darkening (ditto), composition of any extended atmosphere, ...
 

1. What are the different types of objects that can orbit each other in the universe?

The most common objects that orbit each other in the universe are stars, planets, moons, and other celestial bodies. However, smaller objects such as asteroids and comets can also orbit larger bodies.

2. What are the factors that determine the physical properties of objects that orbit each other?

The physical properties of objects that orbit each other are determined by their mass, size, distance from each other, and the force of gravity between them. These factors influence the speed of their orbit, the shape of their orbit, and the overall dynamics of their system.

3. How do scientists measure the physical properties of objects that orbit each other?

Scientists use various techniques to measure the physical properties of objects that orbit each other. For example, they can use telescopes to observe the size and shape of the orbit, or they can use spectroscopy to determine the chemical composition of the objects.

4. Can objects that orbit each other have different physical properties?

Yes, objects that orbit each other can have different physical properties. For example, a star and a planet will have different sizes, masses, and temperatures. However, their physical properties can also influence each other, such as a planet's gravitational pull affecting the orbit of its moon.

5. How do the physical properties of objects that orbit each other affect their stability?

The physical properties of objects that orbit each other can greatly affect their stability. For example, objects with a larger mass or closer distance will have a stronger gravitational pull, which can lead to a more stable orbit. On the other hand, objects with similar masses or farther distances can have more unstable orbits that may eventually result in collisions or ejection from the system.

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