# How do you find the orbital period of an exoplanet?

## How do you find the orbital period of an exoplanet?

So we use R = ∛(T2 · Ms) where Ms = is the star’s mass in relation to our sun’s mass. To find the orbital period of an exoplanet using a light curve, determine the length of time between each dip in the light curve, represented by a line that drops below the normal light intensity.

### What is the name of the exoplanet with the orbital period closest to that of Earth’s 365 day period?

Kepler-22b is slightly larger than Earth, but has an orbit that is pretty similar (290 days to Earth’s 365). Kepler-22b also orbits a G-star class sun like our sun, but the exoplanet’s star is a little bit smaller and colder. Investigators praised the find as helping to fufill Kepler’s mission of finding another Earth.

How do astronomers know when they discover an exoplanet?

Relativistic beaming. A separate novel method to detect exoplanets from light variations uses relativistic beaming of the observed flux from the star due to its motion. It is also known as Doppler beaming or Doppler boosting.

What was the first exoplanet discovered?

On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the pulsar PSR 1257+12. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets.

## What happens to the period as the orbital radius increases?

So the radius must increase by a factor of 4, to decrease the orbital velocity by a factor of 2. The circumference of the orbit has also increased by this factor of 4, and so with half the orbital velocity, the period must be 8 times longer.

### What galaxy is WASP-12b in?

Auriga
WASP-12b is located roughly 1,200 light-years from Earth in the constellation Auriga. It was discovered in March 2009 using the transit method. It is 1.8 times Jupiter’s radius, and 1.4 times Jupiter’s mass.

What is the biggest problem with finding exoplanets?

What is the main problem with the current methods used to find exoplanets? We cannot find rocky, Earth-like exoplanets using the current methods.