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/m³
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/s²
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
| Name of Largest Exoplanets | 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/s² 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/m³ |
| 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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