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In 1892, E. E. Barnard observed a fifth satellite of Jupiter with the 36-inch (910 mm) refractor at Lick Observatory in California. This moon was later named Amalthea . [ 161 ] It was the last planetary moon to be discovered directly by a visual observer through a telescope. [ 162 ]
A montage of Jupiter and its four largest moons (distance and sizes not to scale) There are 95 moons of Jupiter with confirmed orbits as of 5 February 2024. [1] [note 1] This number does not include a number of meter-sized moonlets thought to be shed from the inner moons, nor hundreds of possible kilometer-sized outer irregular moons that were only briefly captured by telescopes. [4]
Milkyweb Astronomical Observatory Guide world's largest database of astronomical observatories since 2000 – about 2000 entries; List of amateur and professional observatories in North America with custom weather forecasts; Map showing many of the Astronomical Observatories around the world (with drilldown links)
Amalthea is in a close orbit around Jupiter and is within the outer edge of the Amalthea Gossamer Ring, which is formed from dust ejected from its surface. [11] Jupiter would appear 46.5 degrees in diameter from its surface. [b] Amalthea is the largest of the inner satellites of Jupiter and is irregularly shaped and reddish in color. It is ...
Mars – Mapping of surface roughness from Arecibo Observatory. The Mars Express mission carries a ground-penetrating radar. [60] Jupiter system – Survey of moon Europa. [61] Saturn system – Rings and Titan from Arecibo Observatory. Mapping of Titan's surface and observations of other moons from the Cassini spacecraft. [62]
Map Observatories, programs, surveys, and dedicated telescopes CTRY Region MPC description 000: Royal Observatory, Greenwich: ENG: Greenwich 001: Isaac Roberts' Observatory: ENG: Crowborough 002: Rayleigh Observatory, Chelmsford borough, Essex: ENG: Rayleigh 003: Montpellier Observatory (Observatoire de la Babote; Montpellier Babote Observatory ...
Jupiter was known to astronomers of ancient times. [1] The Romans named it after their god Jupiter . [ 2 ] When viewed from Earth , Jupiter can reach an apparent magnitude of −2.94, bright enough for its reflected light to cast shadows, [ 3 ] and making it on average the third-brightest object in the night sky after the Moon and Venus .