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Tsutomu Seki
is a Japanese astronomer and discoverer of minor planets and comets, born in Kōchi, Japan. Career Tsutomu Seki is the Director of the Geisei Observatory in Kōchi, and in charge of the Comet Section of the Oriental Astronomical Association. Between 1961 and 1970, he had visually discovered six comets, including C/1965 S1 (Ikeya-Seki), the well known great comet of 1965. He has also discovered a large number of asteroids such as 13553 Masaakikoyama and , a near-Earth Amor asteroid and a Jupiter trojan, respectively. Many of his discoveries are named after famous sites in Kōchi, such as Harimaya-bashi, Ryōma (after Sakamoto Ryōma), Katsurahama beach, and Kagami-gawa. Awards and honors Asteroid 3426 Seki, discovered by Karl Reinmuth at the Heidelberg Observatory in 1932, was named in his honor. The official naming citation was published by the Minor Planet Center The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ( |
Heidelberg Observatory
Heidelberg (; Palatine German: '''') is a city in the German state of Baden-Württemberg, situated on the river Neckar in south-west Germany. As of the 2016 census, its population was 159,914, of which roughly a quarter consisted of students. Located about south of Frankfurt, Heidelberg is the fifth-largest city in Baden-Württemberg. Heidelberg is part of the densely populated Rhine-Neckar Metropolitan Region. Heidelberg University, founded in 1386, is Germany's oldest and one of Europe's most reputable universities. Heidelberg is a scientific hub in Germany and home to several internationally renowned research facilities adjacent to its university, including the European Molecular Biology Laboratory and four Max Planck Institutes. The city has also been a hub for the arts, especially literature, throughout the centuries, and it was designated a "City of Literature" by the UNESCO Creative Cities Network. Heidelberg was a seat of government of the former Electorate of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Related categories * :Year of birth missing (living people) / :Year of birth unknown * :Date of birth missing (living people) / :Date of birth unknown * :Place of birth missing (living people) / :Place of birth unknown * :Year of death missing / :Year of death unknown * :Date of death missing / :Date of death unknown * :Place of death missing / :Place of death unknown * :Missing middle or first names See also * :Dead people * :Template:L, which generates this category or death years, and birth year and sort keys. : {{DEFAULTSORT:Living people 21st-century people People by status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930 Births
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 '' Ab urbe condita''). The denomination 193 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 Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discoverers Of Comets
Discovery is the act of detecting something new, or something previously unrecognized as meaningful. With reference to sciences and academic disciplines, discovery is the observation of new phenomena, new actions, or new events and providing new reasoning to explain the knowledge gathered through such observations with previously acquired knowledge from abstract thought and everyday experiences. A discovery may sometimes be based on earlier discoveries, collaborations, or ideas. Some discoveries represent a radical breakthrough in knowledge or technology. New discoveries are acquired through various senses and are usually assimilated, merging with pre-existing knowledge and actions. Questioning is a major form of human thought and interpersonal communication, and plays a key role in discovery. Discoveries are often made due to questions. Some discoveries lead to the invention of objects, processes, or techniques. A discovery may sometimes be based on earlier discoveries, collabo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6244 Okamoto
6244 Okamoto, provisional designation , is a background asteroid and binary system from the inner regions of the asteroid belt, approximately in diameter. It was discovered on 20 August 1990, by Japanese astronomer Tsutomu Seki at the Geisei Observatory in Kōchi, Japan, and later named after Japanese school teacher Hiroshi Okamoto. The presumed S-type asteroid has a short rotation period of 2.9 hours. The discovery of its minor-planet moon was announced in October 2006. Orbit and classification ''Okamoto'' is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Flora family (), a giant asteroid family and the largest family of stony asteroids in the main-belt. It orbits the Sun in the inner asteroid belt at a distance of 1.8–2.5 AU once every 3 years and 2 months (1,160 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4606 Saheki
4606 Saheki, provisional designation , is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. The asteroid was discovered on 27 October 1987, by Japanese astronomer Tsutomu Seki at Geisei Observatory, Japan. It was later named after Japanese astronomer Tsuneo Saheki. Classification and orbit ''Saheki'' is a member of the Flora family, one of the largest families of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 5 months (1,234 days). Its orbit has an eccentricity of 0.10 and an inclination of 3 ° with respect to the ecliptic. The first precovery was taken at Palomar Observatory in 1953, extending the asteroid's observation arc by 34 years prior to its discovery. Physical characteristics Rotation period In January 2009, a rotational lightcurve of ''Saheki'' was obtained from photometric observations by David Higgins at Hunters Hill Observatory, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3851 Alhambra
3851 Alhambra, provisional designation , is a stony Flora asteroid and relatively slow rotator from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 30 October 1986, by Japanese astronomer Tsutomu Seki at Geisei Observatory in Kōchi, Japan. The asteroid was named for the World Heritage Site Alhambra, in Granada, Spain. Orbit and classification The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.3 AU once every 3 years and 3 months (1,171 days). Its orbit has an eccentricity of 0.06 and an inclination of 5 ° with respect to the ecliptic. The first precovery was taken at La Plata Astronomical Observatory in 1950, extending the asteroid's observation arc by 36 years prior to its discovery. Physical characteristics A rotational lightcurve of ''Alhambra'' was obtained from photometric obs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3822 Segovia
3822 Segovia ( ''prov. designation'': ) is a stony Flora asteroid from the inner regions of the asteroid belt. It was discovered by Japanese astronomer Tsutomu Seki at Geisei Observatory in Kōchi, Japan, on 21 February 1988. The presumed S-type asteroid has a rotation period of 11.0 hours and measures approximately in diameter. It was later named after Spanish guitarist Andrés Segovia. Orbit and classification The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 5 months (1,249 days). Its orbit has an eccentricity of 0.12 and an inclination of 3 ° with respect to the ecliptic. It was first observed as at the Karl Schwarzschild Observatory in 1962, extending the body's observation arc by 26 years prior to its official discovery observation. Naming This minor planet was named for world-famous virtuoso cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3785 Kitami
3785 Kitami, provisional designation , is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 19 kilometers in diameter. The asteroid was discovered by Japanese astronomer Tsutomu Seki at Geisei Observatory on 30 November 1986, and named after the city of Kitami, Japan. Orbit and classification The C-type asteroid is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.7–3.8 AU once every 5 years and 10 months (2,127 days). Its orbit has an eccentricity of 0.17 and an inclination of 2 ° with respect to the ecliptic. The first observation was made at Simeiz Observatory in 1934, and the first used precovery was taken at the Australian Siding Spring Observatory in 1979, extending the asteroid's observation arc by 7 years prior to its official discovery date. Physical characteristics Rotation period I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2571 Geisei
2571 Geisei, provisional designation , is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered by Japanese astronomer Tsutomu Seki at Geisei Observatory on 23 October 1981, and named for the Japanese village of Geisei. Classification and Orbit ''Geisei'' is a member of the Flora family, one of the largest families of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,215 days). Its orbit has an eccentricity of 0.19 and an inclination of 3 ° with respect to the ecliptic. In October 1911, ''Geisei'' was first identified as at Heidelberg Observatory. The asteroid's observation arc begins 50 years prior to its discovery, with a precovery taken at Lowell Observatory in 1931. Physical characteristics Lightcurves A rotational lightcurve for this asteroid was obtained from photometric observations made at the Australian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
