Andrew Claude de la Cherois Crommelin
Encyclopedia
Andrew Claude de la Cherois Crommelin (February 6, 1865 – September 20, 1939) was a Irish-born, British astronomer
of Huguenot
descent. He was born in Cushendun
, County Antrim
, and educated in England
at Marlborough College
and Trinity College, Cambridge
. He worked at the Royal Greenwich Observatory and went on several solar eclipse
expeditions. He was president of the Royal Astronomical Society
from 1929 to 1931.
An expert on comet
s, his calculation of orbits of what were then called Comet Forbes 1928 III, Comet Coggia-Winnecke 1873 VII, and Comet Pons 1818 II, in 1929, showed that these comet
s were one and the same periodic comet. The comet thus received the rather unwieldy name "Comet Pons
-Coggia
-Winnecke
-Forbes
". In 1948, he was posthumously honored when the comet was renamed after him alone (today, in modern nomenclature, it is designated 27P/Crommelin
). This is similar to the case of Comet Encke
, where the periodic comet is named after the person determining the orbit rather than the possibly-multiple discoverers and re-discoverers at each apparition.
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...
of Huguenot
Huguenot
The Huguenots were members of the Protestant Reformed Church of France during the 16th and 17th centuries. Since the 17th century, people who formerly would have been called Huguenots have instead simply been called French Protestants, a title suggested by their German co-religionists, the...
descent. He was born in Cushendun
Cushendun
Cushendun is a small coastal village in County Antrim, Northern Ireland. It sits off the A2 coast road between Cushendall and Ballycastle. It has a sheltered harbour and lies at the mouth of the River Dun and Glendun, one of the nine Glens of Antrim. The Mull of Kintyre in Scotland is only about...
, County Antrim
County Antrim
County Antrim is one of six counties that form Northern Ireland, situated in the north-east of the island of Ireland. Adjoined to the north-east shore of Lough Neagh, the county covers an area of 2,844 km², with a population of approximately 616,000...
, and educated in England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...
at Marlborough College
Marlborough College
Marlborough College is a British co-educational independent school for day and boarding pupils, located in Marlborough, Wiltshire.Founded in 1843 for the education of the sons of Church of England clergy, the school now accepts both boys and girls of all beliefs. Currently there are just over 800...
and Trinity College, Cambridge
Trinity College, Cambridge
Trinity College is a constituent college of the University of Cambridge. Trinity has more members than any other college in Cambridge or Oxford, with around 700 undergraduates, 430 graduates, and over 170 Fellows...
. He worked at the Royal Greenwich Observatory and went on several solar eclipse
Solar eclipse
As seen from the Earth, a solar eclipse occurs when the Moon passes between the Sun and the Earth, and the Moon fully or partially blocks the Sun as viewed from a location on Earth. This can happen only during a new moon, when the Sun and the Moon are in conjunction as seen from Earth. At least...
expeditions. He was president of the Royal Astronomical Society
Royal Astronomical Society
The Royal Astronomical Society is a learned society that began as the Astronomical Society of London in 1820 to support astronomical research . It became the Royal Astronomical Society in 1831 on receiving its Royal Charter from William IV...
from 1929 to 1931.
An expert on comet
Comet
A comet is an icy small Solar System body that, when close enough to the Sun, displays a visible coma and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet...
s, his calculation of orbits of what were then called Comet Forbes 1928 III, Comet Coggia-Winnecke 1873 VII, and Comet Pons 1818 II, in 1929, showed that these comet
Comet
A comet is an icy small Solar System body that, when close enough to the Sun, displays a visible coma and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet...
s were one and the same periodic comet. The comet thus received the rather unwieldy name "Comet Pons
Jean-Louis Pons
Jean-Louis Pons was a French astronomer.Despite humble beginnings and being self-taught, he went on to become the greatest visual comet discoverer of all time: between 1801 and 1827 Pons discovered thirty-seven comets, more than any other person in history.- Early life :Pons was born at Peyre,...
-Coggia
Jérôme Eugène Coggia
Jérôme Eugène Coggia was a 19th-century French astronomer.Working in Marseille, he discovered a number of comets, including the bright "Coggia's Comet" . The periodic comet 27P/Crommelin was previously called "Comet Pons-Coggia-Winnecke-Forbes". In 1916 he was awarded the Lalande Prize of the...
-Winnecke
Friedrich August Theodor Winnecke
Friedrich August Theodor Winnecke was a German astronomer.He worked at Pulkovo Observatory from 1858 to 1865, but returned to Germany and served as professor of astronomy at Strasbourg from 1872 to 1881.He discovered or co-discovered a large number of comets, including the periodic comet...
-Forbes
Alexander F. I. Forbes
Alexander Forbes Irvine Forbes was a South African astronomer.He was born in Scotland in Kinellar, Aberdeenshire and came to South Africa in 1896. He returned to Scotland to study but emigrated permanently to South Africa in 1909...
". In 1948, he was posthumously honored when the comet was renamed after him alone (today, in modern nomenclature, it is designated 27P/Crommelin
27P/Crommelin
Comet Crommelin, also known as Comet Pons-Coggia-Winnecke-Forbes, is a periodic comet in the solar system named after the British astronomer Andrew C. D. Crommelin who calculated its orbit in 1930...
). This is similar to the case of Comet Encke
Comet Encke
Comet Encke or Encke's Comet is a periodic comet that completes an orbit of the Sun once every three years — the shortest period of any known comet...
, where the periodic comet is named after the person determining the orbit rather than the possibly-multiple discoverers and re-discoverers at each apparition.
Named after Crommelin
- CometCometA comet is an icy small Solar System body that, when close enough to the Sun, displays a visible coma and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet...
27P/Crommelin27P/CrommelinComet Crommelin, also known as Comet Pons-Coggia-Winnecke-Forbes, is a periodic comet in the solar system named after the British astronomer Andrew C. D. Crommelin who calculated its orbit in 1930... - Crommelin (lunar crater)Crommelin (lunar crater)Crommelin is an ancient lunar crater that is located in the vicinity of the south pole of the Moon, on the far side. It lies to the north of the large crater Zeeman, and to the east-northeast of Numerov....
- Crommelin (crater on Mars)
- AsteroidAsteroidAsteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...
1899 Crommelin1899 Crommelin1899 Crommelin is a main-belt asteroid discovered on October 26, 1971 by Kohoutek, L. at Bergedorf.- External links :*...