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Louis Boyer (astronomer)
Louis Boyer (1901–1999) was a French astronomer who worked at the Algiers Observatory, North Africa, where he discovered 40 asteroids between 1930 and 1952. In the 1950s and 1960s. he worked on identifications of small Solar System bodies at Nice Observatory in southeastern France. The asteroid 1215 Boyer, discovered by his colleague Alfred Schmitt at Algiers in 1932, was named after him. In turn Boyer named the 1617 Alschmitt asteroid in honor of Schmitt. Boyer also named 1713 Bancilhon after Odette Bancilhon his colleague and wife of astronomer Alfred Schmitt. References 20th-century French astronomers Discoveries by Louis Boyer (astronomer), * 1901 births 1999 deaths Discoverers of asteroids Recipients of the Lalande Prize {{france-astronomer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomer
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, galaxies – in either observational astronomy, observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, Sun, solar astronomy, the Star formation, origin or stellar evolution, evolution of stars, or the galaxy formation and evolution, formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers usually fall under either of two main types: observational astronomy, observational and theoretical astronomy, theoretical. Observational astronomers make direct observations of Astronomical object, celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1340 Yvette
1340 Yvette, provisional designation , is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 27 December 1934, by astronomer Louis Boyer at the Algiers Observatory, who named it after his niece, Yvette. Orbit and classification ''Yvette'' is a Themistian asteroid that belongs to the Themis family (), a very large family of nearly 5,000 member asteroids, named after 24 Themis. It orbits the Sun in the outer main belt at a distance of 2.8–3.6 AU once every 5 years and 8 months (2,075 days; semi-major axis of 3.18 AU). Its orbit has an eccentricity of 0.13 and an inclination of 0 ° with respect to the ecliptic. The asteroid was first identified as at Heidelberg Observatory in February 1930. The body's observation arc begins with its official discovery observation at Algiers in 1934. Physical characteristics ''Yvette'' has been characterized as a carbonaceous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1511 Daléra
1511 Daléra, provisional designation , is an asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 22 March 1939, by French astronomer Louis Boyer at the Algerian Algiers Observatory, North Africa, and named after Paul Daléra, a friend of the discoverer. Classification and orbit ''Daléra'' orbits the Sun in the inner main-belt at a distance of 2.1–2.6 AU once every 3 years and 7 months (1,323 days). Its orbit has an eccentricity of 0.11 and an inclination of 4 ° with respect to the ecliptic. It was first identified as at Heidelberg Observatory in 1928, extending the body's observation arc by 11 years prior to its official discovery observation. Physical characteristics Rotation period In March 2015, three rotational lightcurves of ''Daléra'' were independently obtained by Italian astronomers Maurizio Scardella (), Fabio Salvaggio (), and Giovanni Casalnuovo () after being reported as a li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1416 Renauxa
1416 Renauxa, provisional designation , is an Eon asteroid from the outer regions of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 4 March 1937, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa. It was named after Joseph Renaux, an astronomer at the discovering observatory. Orbit and classification ''Renauxa'' is a member the Eos family (), the largest asteroid family in the outer main belt consisting of nearly 10,000 asteroids. It orbits the Sun at a distance of 2.7–3.3 AU once every 5 years and 3 months (1,915 days). Its orbit has an eccentricity of 0.11 and an inclination of 10 ° with respect to the ecliptic. The asteroid was first identified as at Heidelberg Observatory in October 1914, where its observation arc begins with its identification as in September 1919, more than 17 years prior to its official discovery observation at Algiers. Physical characteristics ''Renauxa'' has be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1415 Malautra
Year 1415 ( MCDXV) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. Events January–December * April 30 – Frederick I becomes Elector of Brandenburg. * June 5 – The Council of Constance condemns the writings of John Wycliffe and asks Jan Hus to recant in public his heresy; after his denial, he is tried for heresy, excommunicated, then sentenced to be burned at the stake. * July 4 – Pope Gregory XII officially opens the Council of Constance, and then abdicates. He is the last pope to resign, until Pope Benedict XVI in 2013. * July 6 – Jan Hus is burned at the stake in Konstanz. * July 31 – Henry V of England is informed of the Southampton Plot against him; he has the leaders arrested and executed, before invading France. * August 21 – Conquest of Ceuta: Portugal conquers the city of Ceuta from the Moors, initiating the Portuguese Empire, and European expansion an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1414 Jérôme
1414 Jérôme, provisional designation , is a carbonaceous Dorian asteroid from the central region of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 12 February 1937 by, French astronomer Louis Boyer at Algiers Observatory, Algeria, in northern Africa, and named after his father Jérôme Boyer. Orbit and classification ''Jérôme'' is a member of the Dora family (), a well-established central asteroid family of more than 1,200 carbonaceous asteroids. The family's namesake is 668 Dora. It is alternatively known as the "Zhongolovich family", named after its presumably largest member 1734 Zhongolovich. The Dora family may also contain a subfamily. ''Jérôme'' orbits the Sun in the middle main-belt at a distance of 2.3–3.2 AU once every 4 years and 8 months (1,697 days). Its orbit has an eccentricity of 0.16 and an inclination of 9 ° with respect to the ecliptic. The body's observation arc starts with its official disc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1413 Roucarie
Year 1413 ( MCDXIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. Events January–December * March 21 – Henry V becomes King of England following the death of his father Henry IV. * July 5 – Battle of Çamurlu: Mehmed I defeats his brother Musa, ending the Ottoman Interregnum. * August 28 – The University of St Andrews in Scotland is chartered by papal bull. * October 2 – The Kingdom of Poland and Grand Duchy of Lithuania sign the '' Union of Horodło''. Date unknown * Samogitia becomes the last region in Europe to be Christianized. * The '' Annals of the Joseon Dynasty'' begin in Korea. Births * February 24 – Louis, Duke of Savoy (d. 1465) * September 8 – Catherine of Bologna, Italian cloistered nun (d. 1463) * November 19 – Frederick II, Elector of Brandenburg (d. 1471) * ''date unknown'' – Joanot Martorell, Spanish writer (d. 1468) Deaths ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1412 Lagrula
1412 Lagrula, provisional designation , is an asteroid from the inner regions of the asteroid belt, approximately 7 or 23 kilometers in diameter, depending on the body's divergent reflectivity measurements. It was discovered on 19 January 1937, by French astronomer Louis Boyer at the North African Algiers Observatory in Algeria. It was later named after French astronomer Philippe Lagrula. Classification and orbit ''Lagrula'' is a presumed member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,204 days). Its orbit has an eccentricity of 0.11 and an inclination of 5 ° with respect to the ecliptic. First identified as at Lowell Observatory in 1929, the body's observation arc was extended by 8 years prior to its official discovery observation at Algiers. Physical characteristics Photometry During March and April 2013, photometric observa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1400 Tirela
1400 Tirela ( ''prov. designation'': ) is an asteroid and the parent body of the Tirela family, located in the outer regions of the asteroid belt. It was discovered on 17 November 1936, by French astronomer Louis Boyer at the Algiers Observatory in North Africa. The asteroid has a rotation period of 13.4 hours and measures approximately in diameter. It was named after Charles Tirel, a friend of the discoverer. Orbit and classification ''Tirela'' is the parent body of the Tirela family, a fairly large asteroid family, also known as the Klumpkea family, after its largest member 1040 Klumpkea. It orbits the Sun in the outer main belt at a distance of 2.4–3.9 AU once every 5 years and 6 months (2,018 days). Its orbit has an eccentricity of 0.23 and an inclination of 16 ° with respect to the ecliptic. The asteroid was first identified as at Lowell Observatory in October 1930. The body's observation arc also begins at Lowell Observatory, with a precovery taken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1392 Pierre
1392 Pierre, provisional designation , is a dark, dynamical Eunomian asteroid from the central regions of the asteroid belt, approximately in diameter. It was discovered on 16 March 1936, by astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa. The asteroid was named after the discoverer's nephew, Pierre. Orbit and classification ''Pierre'' is a dynamical member of the Eunomia family (), a prominent family of stony asteroids and the largest one in the intermediate main belt with more than 5,000 members. ''Pierre''s spectral type is different from that of the Eunomia family ''(see below)'' and possibly an interloper rather than a true family member. When applying the hierarchical clustering method to its proper orbital elements, ''Pierre'' is a non- family asteroid of the main belt's background population. It orbits the Sun in the central main-belt at a distance of 2.1–3.1 AU once every 4 years and 3 months (1,538 days). Its orbit has an e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1380 Volodia
1380 Volodia ( ''prov. designation'': ) is a carbonaceous background asteroid from the outer region of the asteroid belt. It was discovered on 16 March 1936, by French astronomer Louis Boyer at the North African Algiers Observatory in Algeria. Five nights later, ''Volodia'' was independently discovered by Eugène Delporte at Uccle in Belgium. The dark D-type asteroid has a rotation period of 8 hours and measures approximately in diameter. Orbit and classification This C-type asteroid orbits the Sun at a distance of 2.8–3.5 AU once every 5 years and 7 months (2,045 days). Its orbit has an eccentricity of 0.10 and an inclination of 10 ° with respect to the ecliptic. ''Volodia''s observation arc begins with its official discovery at Johannesburg, as no precoveries were taken, and no prior identifications were made. Naming This minor planet is named for Russian Vladimir Vesselovsky (b. 1936), who was born on the night of the asteroid's discovery. "Volodia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1377 Roberbauxa
Year 1377 ( MCCCLXXVII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. Events January–December * January – Battle of Đồ Bàn: Trần Duệ Tông, Trần dynasty Emperor of Đại Việt ( Vietnam), is killed. * January 17 – Pope Gregory XI moves the Papacy back from Avignon to Rome. * January 27 – The Bad Parliament begins sitting in England. Influenced by John of Gaunt, 1st Duke of Lancaster, it undoes the work done by the Good Parliament, the previous year, to reduce corruption in the Royal Council. It also introduces a poll tax. * February – The Pope's representative in northern Italy, Robert of Geneva (the future antipope Clement VII), pillages Cesena, and 4,000 antipapal rebels are massacred. * March 2 – The Bad Parliament dissolves. * March 13 – Trần Phế Đế succeeds his late father as ruler of Vietnam. * May ** Continuous riots in Rome induce Pope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
