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A hot Neptune is a type of giant planet with a mass similar to that of Neptune or Uranus orbiting close to its star, normally within less than 1 AU. [1] The first hot Neptune to be discovered with certainty was Gliese 436 b (Awohali) in 2007, an exoplanet about 33 light years away.
GJ 3470 b (occasionally Gliese 3470 b, formally named Phailinsiam [2]) is an exoplanet orbiting the star GJ 3470, located in the constellation Cancer.With a mass of just under 14 Earth-masses, a radius approximately 4.3 times that of Earth's, and a high equilibrium temperature of 615 K (342 °C; 647 °F), [4] it is a hot Neptune.
Gliese 436 b / ˈ ɡ l iː z ə / (sometimes called GJ 436 b, [7] formally named Awohali [2]) is a Neptune-sized exoplanet orbiting the red dwarf Gliese 436. [1] It was the first hot Neptune discovered with certainty (in 2007) and was among the smallest-known transiting planets in mass and radius, until the much smaller Kepler exoplanet discoveries began circa 2010.
The relative "hot spot" is due to Neptune's axial tilt, which has exposed the south pole to the Sun for the last quarter of Neptune's year, or roughly 40 Earth years. As Neptune slowly moves towards the opposite side of the Sun, the south pole will be darkened and the north pole illuminated, causing the methane release to shift to the north pole.
Neptune was discovered in 1846 and is located 30 times farther from the sun than Earth. The planet's 164-year orbit takes it through some of the darkest and most remote regions of the outer solar ...
Being in the Neptunian desert, LTT 9779 b is a very rare class of planet, with few like it being known. It is estimated that only 1 in 200 Sun-like stars possess a planet with an orbital period of less than a day, [2] and most of those are Hot Jupiters or rocky planets, with ultra-hot Neptune planets being rare. [2]
Both planets are actually a similar shade of pale, greenish blue, new research suggests. ... That process made the planets, especially Neptune, look too much of a rich blue, however.
June 9: Jupiter enters Cancer - The planet of protection and expansion enters its favorite place in the sky, the warm waters of Cancer. While you won’t feel this planet’s sweet and helpful ...