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Download QR code; Print/export ... the hottest planet in the Solar System is Venus, with a temperature of 737 K (464 °C; 867 °F ... Measured effective temperature.
The effective temperature of the Sun (5778 kelvins) is the temperature a black body of the same size must have to yield the same total emissive power.. The effective temperature of a star is the temperature of a black body with the same luminosity per surface area (F Bol) as the star and is defined according to the Stefan–Boltzmann law F Bol = σT eff 4.
Other authors use different names for this concept, such as equivalent blackbody temperature of a planet. [1] The effective radiation emission temperature is a related concept, [2] but focuses on the actual power radiated rather than on the power being received, and so may have a different value if the planet has an internal energy source or ...
A less extreme example is eccentricity in a terrestrial exoplanet's orbit. If the rocky planet orbits a dim red dwarf star, slight eccentricities can lead to effective temperature variations large enough to collapse the planet's atmosphere, given the right atmospheric compositions, temperatures, and pressures. [21]
Temperature Mass (M ⊕ or M J) Notes References OGLE-2005-BLG-390Lb-223 °C (50 K) 5.5 M 🜨 The coldest known exoplanet, with a temperature lower than the melting points of oxygen and nitrogen. [a] [4] OGLE-2005-BLG-071L b-218 °C: 3.8 M J [5] PSR B1620-26 b-201.2 °C: 2.5 M J: One of the oldest exoplanets known, with an age of 12.7 billion ...
The team released a paper of their findings dated 27 April 2007, published in the July 2007 journal Astronomy & Astrophysics. [1] At the time of discovery, it was reported to be the first potentially Earth-like planet in the habitable zone of its star [5] [6] and the smallest-known exoplanet around a main-sequence star, but on 21 April 2009, another planet orbiting Gliese 581, Gliese 581e ...
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Subsolar temperature [61] Ganymede: 156 K Subsolar temperature [61] 80 K Nighttime temperature [62] Callisto: 168 K Subsolar temperature [61] 80 K Predawn nighttime temperature [63] Titan: 2 km (1.2 mi) Mithrim Montes, Xanadu [64] Mimas: Enceladus: 110 K Tiger Stripes [65] Tethys: Dione: Rhea: Iapetus: 20 kilometres (12 mi)Voyager Mountains ...