Historical eventOctober 101846
William Lassell
English astronomer William Lassell discovered Triton, the largest moon of Neptune.
In context
- When
- Saturday, October 10 1846180 years ago
- Category
- Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
- Era
- 19th century · 1840s
- Recorded from
- Wikipedia “On this day” feed
Russia, Greece and some other countries used the Julian calendar into the early 20th century, so local records may show a date up to 13 days earlier.
At a glance
Dates: From 1846.
What happened
English astronomer William Lassell discovered Triton, the largest moon of Neptune.
October 10 through the years
Other entries on the same calendar day, in order.
- 1846William Lassell
- 1998Lignes Aériennes Congolaises (1997–2003)
- 2002Iraq War
- 2004Murder of Huang Na
- 2007Sheikh Muszaphar Shukor
- 2009Armenia
- 2010Netherlands Antilles
- 20152015 Ankara bombings
- 2018Hurricane Michael
- 2018National Fire and Rescue Administration
- 2022Ben Bernanke
Also in 1846
- June 14Sonoma, CaliforniaSettlers in Sonoma began rebelling against Mexico, later proclaiming the California Republic and raising a homemade flag with a bear and…
- June 15Oregon TreatyThe Oregon Treaty extends the border between the United States and British North America, established by the Treaty of 1818, westward to…
- July 11Death of Frederick John WhiteBritish soldier Frederick John White died after a flogging, leading to a campaign to end the practice in the British Army.
- December 24Sultanate of Brunei (1368–1888)The Sultanate of Brunei ceded the island of Labuan to the British Empire.
- June 28Adolphe SaxBelgian musician Adolphe Sax patented his design of the saxophone (example pictured).
- June 19BaseballThe first officially recorded baseball game in U.S. history using modern rules was played in Hoboken, New Jersey, with the "New York Nine…
- September 19La Salette-FallavauxNear La Salette-Fallavaux in southeastern France, shepherd children Mélanie Calvat and Maximin Giraud reported a Marian apparition, now k…
- June 9Hamilton, OntarioHamilton, Ontario (skyline pictured), was granted city status by the Parliament of the Province of Canada.
Sources
- Wikipedia article (text, CC BY-SA 4.0)
- Licence: CC BY-SA 4.0 for adapted text · how we source this
Cite this page
“William Lassell”, What's On This Date, https://whatsonthisdate.com/app/event/william-lassell-1846-october-10, accessed October 29, 2026.
Cite the underlying source as well — the source links above go to the record this entry is adapted from.
Questions about this entry
When did William Lassell happen?
October 10 1846 — 180 years ago, on a Saturday.
Where does this text come from?
Wikipedia “On this day” feed. Summaries are short adaptations that link back to the source, not reprints.
How do I cite this page?
Use the ready-made citation near the sources at the bottom of the page, and follow the source link to cite the underlying record as well.
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