Today on March 20 Google Doodle celebrates Spring Equinox 2019, a celestial event that marks as the beginning of spring in many cultures. Spring Equinox…
Planets in the Universe are countless that always need exploring. There are a lot of undiscovered objects in the Universe that it is not enough an entire life for humans to discover almost half of them. As indicated Stephen Hawking “We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special”. As you know the known largest planet in our Solar System is Jupiter, it is approximately 143,000 kilometers (about 89,000 miles) wide at its equator. Let’s find out more about largest exoplanets in our wonderful Universe. These planets are the largest exoplanets ever discovered and it will probably take a long time until astronomers find a bigger one. Accordingly, we suggest you to enjoy top 10 largest exoplanets in the Universe.
- Cancri 55 e
Cancri 55 e has an extremely hot climate that would be a deterrent, and fresh lava flows might be common. It was discovered on 30 August 2004.The planet Cancri 55 e has twice the diameter of the Earth and about 10 times Earth’s mass. A recent density determination for Cancri 55 e show that this exoplanet is not made primarily of oxygen, as are the inner planets in our Solar System, but rather of carbon. Therefore, one reason to visit Cancri 55 e might be to study its core, that this planet’s great internal pressure might be sufficient to make the carbon found there into one huge diamond.
Kepler-1647b (sometimes named Kepler-1647(AB)-b) is a circumbinary exoplanet that orbits the binary star system Kepler-1647, 3,700 light-years (1,100 pc) from Earth in the constellation Cygnus. It was announced on June 13, 2016 in San Diego at a meeting of the American Astronomical Society. It was discovered using the transit method, when it caused the dimming of the primary star, and then again of the secondary star blended with the primary star eclipse. The first transit of the planet was identified in 2012, but at the time, the single event was not enough to rule out contamination, or confirm it as a planet. It was discovered by the analysis of the Kepler light-curve, which showed the planet in transit. The exoplanet is a gas giant, similar in size to Jupiter, and has an orbital period of 1107 days. This planet is occupied the 9th horizon from our top 10 largest exoplanets in the Universe.
WASP-17b is an exoplanet in the constellation Scorpius that is orbiting the star WASP-17. Its discovery was announced on 11 August 2009. It is the first planet discovered to have a retrograde orbit, meaning it orbits in a direction counter to the rotation of its host star. This discovery challenged traditional planetary formation theory. In terms of diameter, WASP-17b is one of the largest exoplanets discovered and which is only half the mass of Jupiter. Therefore it is the 8th place from our tops.
TrES-4b is an extrasolar planet, and one of the largest exoplanets ever found. It was discovered in 2006, and announced in 2007, by the Trans-Atlantic Exoplanet Survey, using the transit method. It is approximately 1,400 light-years (430 pc) orbiting the star GSC 02620-00648, in the constellation Hercules. TrES-4 orbits its primary star every 3.543 days and eclipses it when viewed from Earth. The planet is 0.919 times as big as Jupiter but 1.799 times the diameter. The largest exoplanet ever found at the time giving it an average density of only about 0.333 grams per cubic centimeter, approximately the same as Saturn’s moon Methone.
WASP-12b is an extrasolar planet orbiting the star WASP-12 which was discovered by the Super WASP planetary transit survey. Its detection was announced on April 1, 2008. Due to its extremely close orbit to its star, it has one of the lowest densities for exoplanets. The planet takes only a little over a day to orbit the star, in contrast to 365 days for the Earth to orbit the Sun. Its distance from the star (approximately 2,115,000 miles) is only 1/44 the Earth’s distance from the Sun, with an approximately the same as Jupiter. It is occupied 6th horizon of our top 10 largest exoplanets.
HAT-P-1b is an extrasolar planet orbiting the Sun-like star HAT-P-1, also known as ADS 16402 B. HAT-P-1 is the dimmer component of the ADS 16402 binary star system. It is located roughly 530 light years away from Earth in the constellation Lacerta. HAT-P-1b is among the least dense of any of the known largest exoplanets. It is almost twice as big as Jupiter. We take this exoplanet 5th horizon in our tops.
- Kappa Andromedae b
Kappa Andromeda b is one of the largest planets. It is considered brown dwarf orbiting Kappa Andromedae, a star in the Andromeda constellation. Kappa Andromeda b is about 170 light years away. The Subaru Telescope directly photographed the object, nearly 13 times the mass of Jupiter. Experts claimed at first that this planet was a star because of the size, but later it was found out that this huge thing is truly a planet. It is supposed that this planet have the same mass as 500.000 Earths.
Kepler-39b (formerly known as KOI-423b), is a confirmed extrasolar object (either a Jovian planet or brown dwarf because of its mass) discovered orbiting the F-type star Kepler-39. It is eighteen times more massive than Jupiter, and is about five-fourths its size. The planet orbits its host star at about 15% of the average distance between the Earth and Sun. Kepler-39b’s host star was investigated by European astronomers along with three other stars, including the host star of Kepler-40b, using equipment at the Haute-Provence Observatory in France. Collection and analysis of data in late 2010 led to the confirmation of Kepler-39b. The discovery paper was published in a journal on June 6, 2011.
- HD 100546 b
HD 100546 b might be the largest exoplanet and surrounding disk of around 6.9 RJ; the planet’s size puts it near the border between a large planet and a brown dwarf. The exact size of the planet has been impossible to calculate, but due to comparisons of other nearby stars, we may have come a conclusion. The size could be 50-150 times our Jupiter, making it the one of the biggest exoplanets ever discovered in the universe.
- DENIS-P J082303.1-491201 b
DENIS-P J082303.1-491201 b (alias 2MASS J08230313-4912012 b) is a sub stellar object, classified as either an exoplanet or a brown dwarf, orbiting DENIS-P J082303.1-491201, an L1.5-type brown dwarf in the constellation Vela. In comparison with our home planet, DENIS-P J082303.1-491201 b will be 1.1 million earths with its size. Therefore, the first place among our tops is occupied DENIS-P J082303.1-491201 b that becomes the largest exoplanet in the universe.
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