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LTT 9779 b (Cuancoá) is the first ultra-hot Neptune discovered with an orbital period of 19 hours and an atmospheric temperature of over 1700 degrees Celsius. Being so close to its star and with a mass around twice that of Neptune, its atmosphere should have evaporated into space so its existence requires an unusual explanation. [8]
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.
Vega b, reported in 2021, is a candidate ultra-hot Neptune with a mass of ≥21.9 M E that revolves around Vega every 2.43 days, a mere 0.04555 AU (6,814,000 km) from its luminous host star. The equilbrium temperature of the planet is a white-hot 3,250 K (2,980 °C; 5,390 °F) assuming a Bond albedo of 0.25, which, if confirmed, would make it ...
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]
The new images are reported in a paper, ‘‘Modelling the seasonal cycle of Uranus’s colour and magnitude, and comparison with Neptune’, published in Monthly Notices of the Royal ...
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 influence of Neptune in your 12th house of unconscious patterns could have you chasing rainbows instead of pursuing or committing to something legitimate. Taurus (April 20-May 20) Horoscope ...
The coldest air of the season so far will unleash a tremendous and long-lasting lake-effect snow event from Michigan and Wisconsin to Pennsylvania, New York and Ohio in the days following ...