Calculating Mass of Star from Orbital Distance and Period

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SUMMARY

The discussion focuses on calculating the mass of a star using its orbital distance and period, resulting in a mass of 2.31 x 10^30 kg. To express this mass in terms of the Sun's mass, participants clarify that one must take the ratio of the star's mass to the Sun's mass, effectively dividing the calculated mass by the solar mass (approximately 1.989 x 10^30 kg). This method allows for a direct comparison of stellar masses.

PREREQUISITES
  • Understanding of Kepler's laws of planetary motion
  • Familiarity with gravitational physics
  • Knowledge of solar mass as a unit of measurement
  • Basic algebra for ratio calculations
NEXT STEPS
  • Research Kepler's Third Law of Planetary Motion
  • Learn about gravitational force calculations
  • Explore the concept of mass ratios in astrophysics
  • Study the properties of the Sun and its mass
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Astronomy students, astrophysicists, and anyone interested in stellar mass calculations and comparisons to solar mass.

bigtymer8700
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iI was asked to find the mass of a star given the orbital distance and the period. my mass came out to be 2.31^30 kg. Its then asking me to express it in terms of our sun's mass. Really don't understand what it means by that
 
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You take the ratio. You just divide your star's mass by that of the sun.
 

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