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Scientific career. Fields. Astronomer. William Lassell FRS FRSE FRSL FRAS (18 June 1799 – 5 October 1880) was an English merchant and astronomer. [1] [2] [3] [4] [5] [6] He is remembered for his improvements to the reflecting telescope and his ensuing discoveries of four planetary satellites.
William Lassell (Bolton, 18 giugno 1799 – Maidenhead, 5 ottobre 1880) è stato un astronomo e ottico inglese. Fece fortuna come fabbricante di birra , e ciò gli permise di coltivare il suo interesse per l' astronomia .
21 mar 2024 · William Lassell (born June 18, 1799, Bolton, Lancashire, Eng.—died Oct. 5, 1880, Maidenhead, Berkshire) was an amateur English astronomer who discovered Ariel and Umbriel, satellites of Uranus; and Triton, a satellite of Neptune. He also discovered a satellite of Saturn, Hyperion (also discovered independently by William Bond and ...
- The Editors of Encyclopaedia Britannica
Lassel, William Enciclopedia on line Astronomo (Bolton, Lancashire, 1799 - Maidenhead 1880); costruì pregevoli riflettori e cannocchiali, con i quali fece importanti scoperte: le 6 stelle del trapezio di Orione, il satellite di Nettuno (1846), l'8º satellite di Saturno (1848) e i 2 satelliti Umbriel e Ariel di Urano (1851).
- William Lassell – Early Years
- The Moons of Saturn, Uranus, and Neptune
- Uranus’ Moons
- Later Years
William Lassell was born in Bolton, Lancashire, UK, and educated in Rochdale Academy. He was apprenticed to a merchant in Liverpool and later became a beer brewer and hobby astronomer. Lassell built himself an observatory in West Derby, a suburb of Liverpool with a 610 mm reflector telescope for which he pioneered the use of an equatorial mount for...
Already in 1846, William Lassell discovered the largest moon of Neptune, Triton, 17 days after the discovery of Neptune itself by Johann Gottfried Galle. Two years later, independently co-discovered Hyperion, a moon of Saturn. Both Ariel and the slightly larger Uranian satellite Umbriel were discovered by William Lassell on 24 October 1851. Althoug...
In total, Uranus has 27 known natural satellites and along with Ariel and Umbriel, Miranda, Titania, and Oberon belong to the five main satellites. The Uranian satellite system is the least massive among those of the giant planets and it is believed that the combined mass of Uranus’ five major satellites would be less than half that of Triton, the ...
When the British Queen Victoriavisited Liverpool in 1851, Lassell was the only personality she specifically asked to meet. In 1855, he built a 120-cm telescope, which he installed on the island of Malta for better observing conditions. In 1849 Lassell was awarded the Gold Medal of the Royal Astronomical Society. In 1858 he was awarded the Royal Med...
22 mag 2021 · William Lassell, one of the foremost British astronomers of the nineteenth century, rose to fame during the months after the telescopic finding by discovering Triton, Neptune’s chief moon—important for calculating the planet’s mass and its influence on Uranus.
1 gen 1988 · One never ceases to William Lassell (1799-1880) 361 admire the controls which Lassell placed upon his work, and how he saw his task as faithfully describing astronomical objects and nothing more. Much of Lassell's historical significance stems from the type of astronomer that he was, how his interests developed, and how the resources ...
