What is the most commonly discovered exoplanet?

OGLE-2005-BLG-390Lb: This planet, announced on January 25, was detected using the gravitational microlensing method. It orbits a red dwarf star around 21,500 light years from Earth, toward the center of the Milky Way galaxy. As of April 2010, it remains the most distant known exoplanet.

How 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.

Which exoplanet discovery method gives the radius of the planet?

While the radial velocity method provides information about a planet’s mass, the photometric method can determine the planet’s radius.

What’s the best explanation for the location of hot Jupiters?

What’s the best explanation for the location of hot Jupiters? They formed farther out like Jupiter but then migrated inward.

What kind of exoplanet is easier to find?

When a planet has a high albedo and is situated around a relatively luminous star, its light variations are easier to detect in visible light while darker planets or planets around low-temperature stars are more easily detectable with infrared light with this method.

How are most exoplanets discovered?

Most exoplanets are found through indirect methods: measuring the dimming of a star that happens to have a planet pass in front of it, called the transit method, or monitoring the spectrum of a star for the tell-tale signs of a planet pulling on its star and causing its light to subtly Doppler shift.

When was the 1st exoplanet discovered?

1992
Previously, scientists have used this method to discover thousands of exoplanets, or planets outside of our solar system (but still in our galaxy). The first exoplanet discovered was in 1992 and, since then, most exoplanets found have been less than 3,000 light-years from Earth.

Which exoplanet detection method has been used to discover the most exoplanets?

transit method
Bottom line: The most popular methods of discovering exoplanets are the transit method and the wobble method, also know as radial velocity. A few exoplanets have been discovered by direct imaging and microlensing.

What is the name of the first exoplanet discovered using the Doppler method?

51 Pegasi b
Although planets had previously been detected orbiting pulsars, 51 Pegasi b was the first planet ever found orbiting a main-sequence star, and the first detected using Doppler spectroscopy. In November 1995, the scientists published their findings in the journal Nature; the paper has since been cited over 1,000 times.

Which discovery method works best for finding planets far from their host star?

While the Doppler technique is most widely used for detecting extrasolar planets, it is best suited to look for very massive planets orbiting close to their parent star. This is because the parent star will wiggle more with a large planet nearby, thereby creating a larger and more easily detectable spectral shift.