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Norman G. Thomas
Norman Gene Thomas (May 1, 1930 - May 19, 2020) was an American astronomer and discoverer of minor planets. He worked at Lowell Observatory using the blink comparator alongside Robert Burnham, Jr., author of the famous three-volume ''Celestial Handbook''. He is credited by the Minor Planet Center with the discovery of 55 numbered minor planets during 1964–1989, including the Apollo asteroids 4544 Xanthus at the and |
Minor Planet
According to the International Astronomical Union (IAU), a minor planet is an astronomical object in direct orbit around the Sun that is exclusively classified as neither a planet nor a comet. Before 2006, the IAU officially used the term ''minor planet'', but that year's meeting reclassified minor planets and comets into dwarf planets and small Solar System bodies (SSSBs).Press release, IAU 2006 General Assembly: Result of the IAU Resolution votes International Astronomical Union, August 24, 2006. Accessed May 5, 2008. Minor planets include asteroids ( |
2089 Cetacea
89 may refer to: * 89 (number) 89 (eighty-nine) is the natural number following 88 and preceding 90. In mathematics 89 is: * the 24th prime number, following 83 and preceding 97. * a Chen prime. * a Pythagorean prime. * the smallest Sophie Germain prime to start a Cunnin ... * Atomic number 89: actinium Years * 89 BC * AD 89 * 1989 * 2089 * etc. See also * * List of highways numbered {{Numberdis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2933 Amber
Year 933 ( CMXXXIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. Events By place Europe * Spring – Hugh of Provence, king of Italy, launches an expedition to Rome to remove the Roman ruler ('' princeps'') Alberic II and avenge his humiliation (see 932). It fails, however, as Roman civic militias repel the Lombard army. Hugh ravages the Italian countryside, before he withdraws to Pavia. * March 15 – Battle of Merseburg: King Henry I ("the Fowler") defeats the Magyars near Merseburg after his refusal to pay the annual tribute. During Henry's lifetime they never raid the East Frankish Kingdom again. * William I ("Longsword"), duke of Normandy, recognizes King Rudolph as his overlord. In turn he gives William the Cotentin Peninsula and the Channel Islands. England * Prince Edwin, the youngest son of the late King Edward the Elder, is drowned en route to the West Frankish Kingdom and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2927 Alamosa
2927 Alamosa, provisional designation , is a stony background asteroid from the central region of the asteroid belt, approximately in diameter. The asteroid was discovered on 5 October 1981, by American astronomer Norman Thomas at Lowell's Anderson Mesa Station in Flagstaff, Arizona. The S-type asteroid has a rotation period of 4.4 hours. It was named after the U.S. town of Alamosa in Colorado. Orbit and classification ''Alamosa'' is a non- family asteroid from the main belt's background population. It orbits the Sun in the central asteroid belt at a distance of 2.1–3.0 AU once every 4.03 years (1,471 days; semi-major axis of 2.53 AU). Its orbit has an eccentricity of 0.17 and an inclination of 17 ° with respect to the ecliptic. It was first identified as at Heidelberg Observatory in 1936, extending the asteroid's observation arc by 45 years prior to its official discovery observation at Anderson Mesa. Naming This minor planet was named after the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2895 Memnon
2895 Memnon is a dark Jupiter trojan from the Trojan camp, approximately in diameter. It was discovered on 10 January 1981, by American astronomer Norman Thomas at Lowell's Anderson Mesa Station near Flagstaff, Arizona, in the United States. The assumed C-type asteroid has a rotation period of 7.5 hours and belongs to the 80 largest Jupiter trojans. It was named after King Memnon from Greek mythology. Orbit and classification ''Memnon'' is a Jovian asteroid located in the Lagrangian point, 60 ° behind on Jupiter's orbit in the so-called Trojan camp . It is also a non- family asteroid of the Jovian background population. It orbits the Sun at a distance of 5.0–5.5 AU once every 12 years (4,382 days; semi-major axis of 5.24 AU). Its orbit has an eccentricity of 0.05 and an inclination of 27 ° with respect to the ecliptic. The body's observation arc begins with a precovery taken at the Australian Siding Spring Observatory in December 1977, more than 3 y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2779 Mary
__NOTOC__ Year 779 ( DCCLXXIX) was a common year starting on Friday of the Julian calendar. The denomination 779 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Europe * Saxon Wars: King Charlemagne assembles a Frankish army at Düren, crosses the Rhine at the modern town of Wesel, and defeats the Saxons in battle near Bocholt ( North Rhine-Westphalia). All the main Westphalian leaders are captured, except Widukind. Charlemagne crosses the Weser, Oker and Ohre rivers into Eastphalian territory, where local leaders submit to Frankish rule and hand over hostages. Widukind remains in northern Saxony, and relies on guerrilla warfare.David Nicolle (2014). The Conquest of Saxony AD 782–785, p. 17. . Britain * Battle of Bensington: King Offa of Mercia defeats his rival Cynewulf of Wessex at Bensington (modern-day Oxfordshire). He seizes c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2764 Moeller
__NOTOC__ Year 764 ( DCCLXIV) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar. The denomination 764 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Europe * Domenico Monegario is deposed, after Pope Paul I demanded donations from Venice. Monegario is blinded and exiled, and succeeded by Maurizio Galbaio as the 7th doge of Venice. During his reign, Venetian wealth is increased via trade. Britain * King Offa of Mercia conquers Kent, and brings an end to the rule of kings Ealhmund and Sigered in West Kent. He imposes Mercian overlordship on the kingdom, but allows a local king, Heaberht, to rule there. Asia * October 14– 21 – Fujiwara no Nakamaro Rebellion: A short-lived revolt led by Fujiwara no Nakamaro is suppressed. Emperor Junnin is deposed after a 6-year reign, and fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2684 Douglas
__NOTOC__ Year 684 ( DCLXXXIV) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 684 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Europe * Ghislemar, mayor of the palace in Neustria and Burgundy, dies after a 2-year reign, and is succeeded by his father Waratton. He makes peace between the three Frankish kingdoms. Britain * King Ecgfrith of Northumbria sends a punitive expedition to Ireland under his ealdorman Berht, laying waste to the territory of Meath, ruled by High King Fínsnechta Fledach. Arabian Empire * Caliph Muawiya II dies at Damascus, after a brief reign that ends Sufyanid rule. A new caliph is proclaimed in Syria amidst tribal wars, but Marwan I will reign until next year. * August 18 – Battle of Marj Rahit: Muslim partisans under Marwan I defeat the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2683 Brian
__NOTOC__ Year 683 ( DCLXXXIII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. The denomination 683 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Britain * King Sighere of Essex dies after a 19-year joint reign. His brother Sæbbi becomes the sole ruler of Essex until his death in 694. Arabian Empire * Siege of Mecca: The Umayyad army led by Husayn ibn Numayr al-Sakuni besieges Mecca, during which the Kaaba ("Sacred House") catches fire and is burned down. * Uqba ibn Nafi, Arab general, is ambushed and killed near Biskra (modern Algeria). His Muslim army evacuates the city of Kairouan in Tunisia, and withdraws to Barca. * November 14 – Caliph Yazid I dies at Damascus, after a 3-year reign marked by civil war. He is succeeded by his son Muawiya II as ruler of the Umayya ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2612 Kathryn
61 may refer to: * 61 (number) * one of the years 61 BC, AD 61, 1961, 2061 In contemporary history, the third millennium of the anno Domini or Common Era in the Gregorian calendar is the current millennium spanning the years 2001 to 3000 ( 21st to 30th centuries). Ongoing futures studies seek to understand what is l ... * In some countries, a slang name for the Cyrillic letter Ы * '' 61*'', a 2001 American sports drama film * "Sixty One", a song by Karma to Burn from the album '' Mountain Czar'', 2016 See also List of highways numbered 61 {{Numberdis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2558 Viv
__NOTOC__ Year 558 ( DLVIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. The denomination 558 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Byzantine Empire * May 7 – In Constantinople, the dome of the Hagia Sophia collapses due to an earthquake. Emperor Justinian I orders the dome to be rebuilt. Europe * The Avars and the Slavs occupy the Hungarian Plain on the Balkans. The threat of Avar domination prompts the Lombards to migrate to Italy. * December 13 – King Chlothar I reunites the Frankish Kingdom after his brother Childebert I dies, becoming sole ruler of the Franks. * December 23 – Chlothar I is crowned King of the Franks. * Conall mac Comgaill becomes king of Dál Riata, a Gaelic overkingdom on the western coast of Scotland. Asia * Istämi, ruler of the Western ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2557 Putnam
__NOTOC__ Year 557 ( DLVII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. The denomination 557 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Europe * The Avars arrive in the northern region of the Caucasus, between the Black Sea and the Caspian Sea. They send envoys to the Byzantines in Lazica (modern Georgia). Like the Huns, the Avars are the former elite of a central Asian federation, which has been forced to flee westwards. Byzantine Empire * December 14 – The 557 Constantinople earthquake occurs. Asia * The Western Wei Dynasty ends: Yuwen Hu deposes emperor Gong Di, and places Yuwen Tai's son Xiaomin on the throne. Yuwen Hu becomes regent and establishes the Northern Zhou dynasty in China. * Ming Di is made emperor, after his younger brother Xiao Min Di is arrested while tryin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
