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2 stars orbiting a common center of gravity?

"Binary" stars were once considered rare, but we're discovering more and more of them. Typically, there's one very large star, with a smaller star orbiting around it, but there are a few binaries in which the two stars aren't all that different in mass.


What is a barycenter?

A barycenter is the point around which two or more celestial bodies orbit. It is the center of mass of the system, meaning that the bodies involved orbit around this common point due to the gravitational forces acting between them. The barycenter may not always coincide with the center of one of the bodies, especially if they have different masses.


How can stellar masses be determined by observing binary star systems?

Stellar masses can be determined by observing binary star-systems. The calculations of the orbits of the binary stars allow the masses of their component stars to be directly determined, which in turn allows other stellar parameters, such as radius and density, to be indirectly estimated.


Measurements of a binary star system are required to determine what property of the stars?

Measurements of a binary star system are required to determine their masses. By analyzing the orbital motion of the stars in the system, scientists can calculate the masses of the stars based on their gravitational interaction and orbital characteristics. This information provides crucial insights into the overall properties and evolution of the stars in the system.


Why is the Moon's gravity has greater effect on earth's ocean tides than the sun's gravity?

This is true because the moon is much closer to earth. Gravitational attraction is in inverse proportion to the square of the distance between two point masses like the sun and earth. Even though the sun is huge, it is also very far away. The earth and moon actually orbit each other; they orbit a common point called the barycenter. The barycenter is within the body of the earth, and it moves in such a way that it is always between the centers of the earth and moon.

Related Questions

2 stars orbiting a common center of gravity?

"Binary" stars were once considered rare, but we're discovering more and more of them. Typically, there's one very large star, with a smaller star orbiting around it, but there are a few binaries in which the two stars aren't all that different in mass.


What are Binary stars used to determine?

The masses of the two stars.


What is a barycenter?

A barycenter is the point around which two or more celestial bodies orbit. It is the center of mass of the system, meaning that the bodies involved orbit around this common point due to the gravitational forces acting between them. The barycenter may not always coincide with the center of one of the bodies, especially if they have different masses.


Which used to be a planet and form a binary system with charon?

Pluto used to be CONSIDERED a planet. Pluto hasn't changed; the definition of a planet has. Charon is a moon of Pluto; since their masses are more similar than Earth and our Moon, they might be considered a binary system.


How can stellar masses be determined by observing binary star systems?

Stellar masses can be determined by observing binary star-systems. The calculations of the orbits of the binary stars allow the masses of their component stars to be directly determined, which in turn allows other stellar parameters, such as radius and density, to be indirectly estimated.


How are air masses that over land similar from air masses that form over water?

they are over land


What is the weight of binary system?

The weight of a binary system depends on the masses of the two objects in the system and their distance from each other. The weight of a binary system is the combined gravitational force between the two objects, which is determined by the equation F = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between them.


Why are most visual binary stars of low luminosity?

Most visual binary stars are of low luminosity because they are often close together and both stars have similar masses, resulting in them being fainter than single stars of the same age. Additionally, the companion stars in these binary systems may not be large or hot enough to emit high levels of light.


How are air masses that form over land similar from air masses that form over water?

they are over land


How are air masses that form over land similar from air masses form over water?

they are over land


Are eclipsing binary stars better for determining masses than non-eclipsing binaries?

Yes, because it is easier to determine the precise times of their mutual orbits, which allows us to calculate their masses.


Can you describe the planetary system the moon is in?

Here are two bodies which are circling each other in space - a near perfect model of the gravitational attraction that one body has on another body. It is not just the moon that is revolving about the earth but that the moon has enough mass to cause the earth, in turn, to move in a circular orbit. It turns out that the two bodies orbit about a common center of gravity which is referred to as the barycenter . It can be shown that the distance of the center of each body from the barycenter is inversely proportional to their masses. In the moon/earth system this locates the barycenter about 2,900 miles from the center of the earth (the radius being about 3,960 miles). The moon is about 236,000 miles in the opposite direction from the barycenter (dividing 2,900 by 236,000 shows the earth to have 81 times the mass of the moon).