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Ceres (minor-planet designation: 1 Ceres) is a dwarf planet in the middle main asteroid belt between the orbits of Mars and Jupiter. It was the first known asteroid , discovered on 1 January 1801 by Giuseppe Piazzi at Palermo Astronomical Observatory in Sicily , and announced as a new planet .
This temperature is still high enough that surface ice is not stable and tends to sublimate away over geologic timescales. [9] Ceres is a dark object, having a geometric albedo of 0.094, [10] meaning that on average its surface reflects only 9% of the sunlight striking it.
Average density Average temperature Average surface gravity; Lowest Highest Lowest Highest ... Ceres: 1187 km Pluto: Major moon of major or dwarf planet [NB 2]
For dust particles within the belt, typical temperatures range from 200 K (−73 °C) at 2.2 AU down to 165 K (−108 °C) at 3.2 AU. [82] However, due to rotation, the surface temperature of an asteroid can vary considerably as the sides are alternately exposed to solar radiation then to the stellar background.
The spectral features of carbonates and clay minerals are usually absent in the spectra of other C-type asteroids. Sometimes Ceres is classified as a G-type asteroid. The Cererian surface is relatively warm. The maximum temperature with the Sun overhead was estimated from measurements to be 235 K (about −38 °C, −36 °F) on 5 May 1991.
The warmest average temperature of a Florida city is 85 degrees, at Fort Myers and Naples. The Royal Palm visitor center in Everglades National Park records the highest non-city average temp at 89 ...
On average, Ceres averages 2,650 hours of sunshine a year (or 59% of possible sunshine hours), ranging from a low of 49% in June to a high of 65% in February. [3] The highest recorded temperature was 43.7 °C (110.7 °F) on January 4, 1963 while the lowest recorded temperature was −6.6 °C (20.1 °F) on July 13, 2000.
The surface temperature averages about -60 degrees Celsius (-80 degrees Fahrenheit). [35] ... Ceres, the only dwarf planet in the asteroid belt, ...