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Top 10 Known Largest Exoplanets in the Universe

The Exoplanets are those planets which are located beyond the Solar system. The names of these exoplanets are adopted by the International Astronomical Union (IAU) by taking the name of its parent star and adding a lowercase letter.

Top 10 Known Largest Exoplanets in the Universe

The top 10 list of the largest exoplanets are listed on the basis of physical size, ordered by radius are given below:

10. Cancri 55 e

It is an exoplanet located in the Cancer constellation.

Mass (m): 7.99 +0.32/ −0.33 M⊕

Radius (r): 1.875 ± 0.029 R⊕

9. Kepler-1647b

It is a circumbinary exoplanet which is 3,700 light-years (1,100 pc) from Earth and located in the constellation Cygnus.

Discovery date: June 13, 2016

Mass (m): 1.52±0.65 MJ

Radius(r): 1.06±0.0123 RJ

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8. WASP-17b

It is an exoplanet which is located in the constellation Scorpius.

Discovered by: David R. Anderson et al

Radius: 121,645 km

Distance to Earth: 978.5 light years

Orbital period: 90 hours

Discovered: 11 August 2009

7. TrES-4b

It is a extrasolar planet located in the Hercules constellation.

Discovered by: Mandushev et al

Radius: 128,614 km

Discovered: 2007

Orbital period: 85 hours

6. WASP-12b

It has one of the lowest densities for exoplanets and located in the Auriga constellation.

Discovered by: SuperWASP planetary transit survey

Distance to Earth: 870.8 light years

Radius: 127,971 km

Orbital period: 26 hours

Discovered: 1 April 2008

Density: 326 kg/m⊃3;

5. HAT-P-1b

It is an extrasolar planet orbiting the Sun-like star HAT-P-1. It is located roughly 521 light years away from Earth in the constellation Lacerta.

Discovered by: HATNet Project (It is a network of six small fully automated "HAT" telescopes)

Radius: 94,298 km

Gravity: 7.355 m/s⊃2;

Distance to Earth: 520.9 light years

Discovered: 14 September 2006

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4. Kappa Andromedae b

It is a substellar object and massive planet or brown dwarf orbiting Kappa Andromedae of the Andromeda constellation.

Discovered through: Subaru Telescope

Radius: 85,790 km

3. Kepler-39b

It is a Jupiter-like planet or brown dwarf that is eighteen times more massive than Jupiter and 1.22 times Jupiter's size.

Discovered by: François Bouchy et al

Orbital period: 21 days

Discovered: 3 August 2011

2. HD 100546 b

It is located at 320 light years from the Earth. According to the astronomer, it might be largest exoplanet discovered with a size of planet 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.

Discovery year: 2013

Mass (m): ~20 MJ

Radius(r): 6.9+2.7/−2.9 RJ

Temperature (T): 932 +193 / −202

1. DENIS-P J082303.1-491201 b

It is substellar brown dwarf object located in the constellation Vela.

Discovered by: Sahlmann et al. (2013) using the ESO telescopes at the La Silla Paranal Observatory

Mass: 28.5±1.9 MJ

Discovery date: August 2013

Orbital period: 246.36+1.38; −1.35 days

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Top 10 Known Largest Exoplanets in the Universe

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Important Facts

1. DENIS-P J082303.1-491201 b

Discovered by: Sahlmann et al. (2013) using the ESO telescopes at the La Silla Paranal Observatory

Mass: 28.5±1.9 MJ

Discovery date: August 2013

Orbital period: 246.36+1.38; −1.35 days

2. HD 100546 b

Discovery year: 2013

Mass (m): ~20 MJ

Radius(r): 6.9+2.7/−2.9  RJ

Temperature (T): 932 +193 / −202

3. Kepler-39b

Discovered by: François Bouchy et al.

Orbital period: 21 days

Discovered: 3 August 2011

4. Kappa Andromedae b

Discovered through: Subaru Telescope

Radius: 85,790 km

5. HAT-P-1b

Discovered by: HATNet Project (It is a network of six small fully automated "HAT" telescopes.)

Radius: 94,298 km

Gravity: 7.355 m/s⊃2;

Distance to Earth: 520.9 light years

Discovered on : 14 September 2006

6. WASP-12b

Discovered by: SuperWASP planetary transit survey

Distance to Earth: 870.8 light years

Radius: 127,971 km

Orbital period: 26 hours

Discovered: 1 April 2008

Density: 326 kg/m⊃3;

7. TrES-4b

Discovered by: Mandushev et al.

Radius: 128,614 km

Discovered: 2007

Orbital period: 85 hours

8. WASP-17b

Discovered by: David R. Anderson et al.

Radius: 121,645 km

Distance to Earth: 978.5 light years

Orbital period: 90 hours

Discovered: 11 August 2009

9. Kepler-1647b

Discovery date: June 13, 2016

Mass (m): 1.52±0.65 MJ

Radius(r): 1.06±0.0123 RJ

10. Cancri 55 e

Mass (m): 7.99 +0.32/ −0.33 M⊕

Radius (r): 1.875 ± 0.029[3] R⊕

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