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Arnold Schwassmann
Friedrich Karl Arnold Schwassmann (25 March 1870 – 19 January 1964) was a German astronomer and a discoverer of 22 minor planets and 4 comets, who worked at Astrophysical Institute Potsdam#Foundation of the Astrophysical Observatory Potsdam .28AOP.29, AOP in Potsdam and at Bergedorf Observatory in Hamburg. He was co-discoverer with Arno Arthur Wachmann of the periodic comets 29P/Schwassmann–Wachmann, 31P/Schwassmann–Wachmann and 73P/Schwassmann–Wachmann, and with Arno Arthur Wachmann and Leslie Peltier of the non-periodic comet C/1930 D1 (Peltier–Schwassmann–Wachmann). The main-belt asteroid 989 Schwassmannia, discovered by himself in 1922, was later named in his honor (). List of discovered minor planets * 435 Ella - 11 September 1898 * 436 Patricia - 13 September 1898 * 442 Eichsfeldia - 15 February 1899 * 443 Photographica - 17 February 1899 * 446 Aeternitas - 27 October 1899 * 447 Valentine - 27 October 1899 * 448 Natalie - 27 October 1899 * 449 Hamburga - 31 ... [...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 IAU definition of planet, reclassified minor planets and comets into dwarf planets and Small Solar System body, 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. In contrast to the eight official planets of the Solar System, all minor planets fail to clearing the neighborhood, clear their orbital neighborhood. Minor planets include asteroids (near- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
446 Aeternitas
446 Aeternitas is a main belt asteroid. It was discovered by Max Wolf and A. Schwassmann on 27 October 1899 in Heidelberg. It is classified as an A-type asteroid. The asteroid is roughly 45 km in diameter and has a high albedo Albedo ( ; ) is the fraction of sunlight that is Diffuse reflection, diffusely reflected by a body. It is measured on a scale from 0 (corresponding to a black body that absorbs all incident radiation) to 1 (corresponding to a body that reflects .... References External links * * Background asteroids Aeternitas Aeternitas Aeternitas A-type asteroids (Tholen) A-type asteroids (SMASS) 18991027 {{Beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
947 Monterosa
947 Monterosa is a minor planet orbiting the Sun. Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado during 2007 produced a light curve with a period of 5.164 ± 0.001 hours with a brightness range of 0.23 ± 0.02 in magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of .... This differs from a period of 2.376 hours reported in 2007. References External links Lightcurve plot of 947 Monterosa Palmer Divide Observatory, B. D. Warner (2007) Asteroid Lightcurve Database (LCDB) query form) Dictionary of Minor Planet Names Google books – Observatoire de Genève, Raoul Behrend – Minor Planet Center * * 000947 Discoveries by Friedrich Karl Arnold Schwassmann Named minor planets 19210208 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
912 Maritima
912 Maritima is an asteroid in the asteroid belt. Based on lightcurve studies observing Maritima over a three-month period, Maritima has a rotation period of 1332 hours. Analysis reveals a possible synodic period of . Superslow rotators, those with periods longer than a few days, are generally small asteroids. The current paradigm is that slowing of an asteroid's spin rate is the result of Yarkovsky–O'Keefe–Radzievskii–Paddack effect, YORP radiation pressure, which acts on the target as the inverse square of its size and the inverse of its semi-major axis. The rotation period is less than conclusive. References External links Lightcurve plot of 912 Maritima Palmer Divide Observatory, Brian D. Warner, B. D. Warner (2005) Asteroid Lightcurve Database (LCDB) query form) Dictionary of Minor Planet Names Google books – Observatoire de Genève, Raoul Behrend – Minor Planet Center * * Background asteroids, 000912 Discoveries by Friedrich Karl Arnold Schwassma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
906 Repsolda
906 Repsolda is a minor planet orbiting the Sun. It is named for the German astronomer and fireman Johann Georg Repsold (1770–1830), who founded and ran Hamburg Observatory Hamburg Observatory () is an astronomical observatory located in the Bergedorf borough of the city of Hamburg in northern Germany. It is owned and operated by the University of Hamburg, Germany since 1968, although it was founded in 1825 by the .... References External links * * 000906 Discoveries by Friedrich Karl Arnold Schwassmann Named minor planets 19181030 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
905 Universitas
905 Universitas is an S-type asteroid S-type (stony-type or silicaceous-type) asteroids are asteroids with a spectral type that is indicative of a siliceous (i.e. stony) mineralogical composition, hence the name. They have relatively high density. Approximately 17% of asteroids are ... orbiting in the Main belt as part of the Flora family. Its diameter is about 21 km and it has an albedo of 0.085. Its rotation period is approximately 14.2 hours. References External links * * 000905 Discoveries by Friedrich Karl Arnold Schwassmann Named minor planets 000905 19181030 {{S-beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
458 Hercynia
458 Hercynia, provisional designation , is a background asteroid from the outer regions of the asteroid belt, approximately 38 kilometers in diameter. It was discovered on 21 September 1900, by astronomers Max Wolf and Arnold Schwassmann at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named for the ancient Hercynian Forest, known to the Romans as "Hercynia silva". Orbit and classification ''Hercynia'' is a non-family asteroid of the main belt's background population. It orbits the Sun in the outer asteroid belt at a distance of 2.3–3.7 AU once every 5 years and 2 months (1,896 days; semi-major axis of 3.00 AU). Its orbit has an eccentricity of 0.24 and an inclination of 13 ° with respect to the ecliptic. The body's observation arc begins two days after to its official discovery observation at Heidelberg. Physical characteristics In the Tholen classification, ''Hercynia'' is a common S-type, while in the SMASS class ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
457 Alleghenia
457 Alleghenia, provisional designation 1900 FJ, is a carbonaceous asteroid from the outer region of the asteroid belt, about 34 kilometers in diameter. It was discovered on 15 September 1900, by German astronomers Max Wolf and Friedrich Schwassmann at Heidelberg Observatory in southern Germany. The C-type asteroid orbits the Sun at a distance of 2.6–3.6 AU once every 5 years and 5 months (1,987 days). Its orbit is tilted by 13 degrees to the plane of the ecliptic and shows an eccentricity of 0.17. Based on assumptions made by the ''Collaborative Asteroid Lightcurve Link'', the body has a low albedo of 0.06, a typical value for a carbonaceous asteroid. In 2014, photometric light-curve observations at the Los Algarrobos Observatory (OLASU, I38), Uruguay, has given a rotation period of hours with a brightness amplitude of 0.20 in magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
456 Abnoba
456 Abnoba, provisional designation , is a stony background asteroid from the central regions of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 4 June 1900, by astronomers Max Wolf and Arnold Schwassmann at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the Celtic deity Abnoba. Orbit and classification ''Abnoba'' is a non-family asteroid from the main belt's background population. It orbits the Sun in the central main-belt at a distance of 2.3–3.3 AU once every 4 years and 8 months (1,701 days). Its orbit has an eccentricity of 0.18 and an inclination of 14 ° with respect to the ecliptic. The body's observation arc begins at Bordeaux Observatory, eleven days after its official discovery observation at Heidelberg. Physical characteristics In the SMASS classification, ''Abnoba'' is a stony S-type asteroid. Its stony composition was also confirmed by polarimetric observations in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
455 Bruchsalia
455 Bruchsalia is a main-belt asteroid. It was discovered by Max Wolf and Friedrich Karl Arnold Schwassmann Friedrich Karl Arnold Schwassmann (25 March 1870 – 19 January 1964) was a German astronomer and a discoverer of 22 minor planets and 4 comets, who worked at Astrophysical Institute Potsdam#Foundation of the Astrophysical Observatory Potsdam .28 ... on May 22, 1900. Its provisional name was 1900 FG. References External links Lightcurve plot of (455) Bruchsalia Antelope Hills Observatory * * Background asteroids Bruchsalia Bruchsalia Bruchsalia CP-type asteroids (Tholen) 19000522 {{Beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
454 Mathesis
454 Mathesis is a main-belt asteroid that was discovered by German astronomer Friedrich Karl Arnold Schwassmann on March 28, 1900. Its provisional name was 1900 FC. Photometric observations of this asteroid at the Altimira Observatory in 2004 gave a light curve with a period of 8.37784 ± 0.00003 hours and a brightness variation of 0.32 in magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of .... This differs from periods of 7.075 hours reported in 1994 and 7.745 hours in 1998. References External links * * Background asteroids Mathesis Mathesis CB-type asteroids (Tholen) 19000328 {{Beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
450 Brigitta
450 Brigitta is a typical Main belt asteroid. It is a member of the Eos family. It was discovered by Max Wolf and A. Schwassmann on 10 October 1899 in Heidelberg Heidelberg (; ; ) is the List of cities in Baden-Württemberg by population, fifth-largest city in the States of Germany, German state of Baden-Württemberg, and with a population of about 163,000, of which roughly a quarter consists of studen .... References External links * * Eos asteroids Brigitta Brigitta Brigitta CSU-type asteroids (Tholen) 18991010 {{Beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
