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2661 Bydžovský
2661 Bydžovský, provisional designation , is an asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 23 March 1982, by Czech astronomer Zdeňka Vávrová at the South Bohemian Kleť Observatory in the Czech Republic. The asteroid was named after mathematician Bohumil Bydžovský. Orbit and classification ''Bydžovský'' orbits the Sun in the outer main-belt at a distance of 2.7–3.3 AU once every 5 years and 3 months (1,923 days). Its orbit has an eccentricity of 0.09 and an inclination of 10 ° with respect to the ecliptic. It was first identified as at Heidelberg Observatory in 1950, extending the body's observation arc by 32 years prior to its discovery. Physical characteristics As of 2016, ''Bydžovský''s size, albedo, composition and rotation period remain unknown. Based on its absolute magnitude of 11.4, its diameter is estimated to measure between 13 and 32 kilometers, assuming an albedo in the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zdeňka Vávrová
Zdeňka Vávrová (born 1945) is a Czech astronomer. She co-discovered periodic comet 134P/Kowal-Vávrová. She had observed it as an asteroid, which received the provisional designation 1983 JG, without seeing any cometary coma. However, later images by Charles T. Kowal showed a coma. The Minor Planet Center credits her with the discovery of 115 numbered minor planets. The Florian main-belt asteroid 3364 Zdenka, discovered by Antonín Mrkos in 1984, was named in her honor and for the 20 years she had been participating in Kleť Observatory's minor planet astrometry Astrometry is a branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies. It provides the kinematics and physical origin of the Solar System and this galaxy, the Milky Way. His ... program. Naming citation was published on 26 February 1994 (). List of discovered minor planets See also * References External link ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotation Period
The rotation period of a celestial object (e.g., star, gas giant, planet, moon, asteroid) may refer to its sidereal rotation period, i.e. the time that the object takes to complete a single revolution around its axis of rotation relative to the background stars, measured in sidereal time. The other type of commonly used rotation period is the object's synodic rotation period (or ''solar day''), measured in solar time, which may differ by a fraction of a rotation or more than one rotation to accommodate the portion of the object's orbital period during one day. Measuring rotation For solid objects, such as rocky planets and asteroids, the rotation period is a single value. For gaseous or fluid bodies, such as stars and gas giants, the period of rotation varies from the object's equator to its pole due to a phenomenon called differential rotation. Typically, the stated rotation period for a gas giant (such as Jupiter, Saturn, Uranus, Neptune) is its internal rotation period, as d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer Berlin Heidelberg
Springer Science+Business Media, commonly known as Springer, is a German multinational publishing company of books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing. Originally founded in 1842 in Berlin Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constitue ..., it expanded internationally in the 1960s, and through mergers in the 1990s and a sale to venture capitalists it fused with Wolters Kluwer and eventually became part of Springer Nature in 2015. Springer has major offices in Berlin, Heidelberg, Dordrecht, and New York City. History Julius Springer founded Springer-Verlag in Berlin in 1842 and his son Ferdinand Springer grew it from a small firm of 4 employees into Germany's then second largest academic publisher with 65 staff in 1872 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jet Propulsion Laboratory
The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in the City of La Cañada Flintridge, California, United States. Founded in the 1930s by Caltech researchers, JPL is owned by NASA and managed by the nearby California Institute of Technology (Caltech). The laboratory's primary function is the construction and operation of planetary robotic spacecraft, though it also conducts Earth-orbit and astronomy missions. It is also responsible for operating the NASA Deep Space Network. Among the laboratory's major active projects are the Mars 2020 mission, which includes the ''Perseverance'' rover and the '' Ingenuity'' Mars helicopter; the Mars Science Laboratory mission, including the ''Curiosity'' rover; the InSight lander (''Interior Exploration using Seismic Investigations, Geodesy and Heat Transport''); the ''Mars Reconnaissance Orbiter''; the ''Juno'' spacecraft orbiting Jupiter; the ''SMAP'' satellite for earth surface s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minor Planet Circulars
The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU). Founded in 1947, it operates at the Smithsonian Astrophysical Observatory. Function The Minor Planet Center is the official worldwide organization in charge of collecting observational data for minor planets (such as asteroids), calculating their orbits and publishing this information via the '' Minor Planet Circulars''. Under the auspices of the International Astronomical Union (IAU), it operates at the Smithsonian Astrophysical Observatory, which is part of the Center for Astrophysics along with the Harvard College Observatory. The MPC runs a number of free online services for observers to assist them in observing minor planets and comets. The complete catalogue of minor planet orbits (sometimes referred to as the "Minor Planet Catalogue") may also be freely downloaded. In addition to astrometric data, the MPC collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minor Planet Center
The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU). Founded in 1947, it operates at the Smithsonian Astrophysical Observatory. Function The Minor Planet Center is the official worldwide organization in charge of collecting observational data for minor planets (such as asteroids), calculating their orbits and publishing this information via the '' Minor Planet Circulars''. Under the auspices of the International Astronomical Union (IAU), it operates at the Smithsonian Astrophysical Observatory, which is part of the Center for Astrophysics along with the Harvard College Observatory. The MPC runs a number of free online services for observers to assist them in observing minor planets and comets. The complete catalogue of minor planet orbits (sometimes referred to as the "Minor Planet Catalogue") may also be freely downloaded. In addition to astrometric data, the MPC collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2599 Veselí
__NOTOC__ Year 599 ( DXCIX) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. The denomination 599 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 * Emperor Maurice refuses to pay ransom for 12,000 Byzantine soldiers taken prisoner by the Avars. Their leader Bayan I orders the execution of the prisoners, and slaughters them all. His failure to buy back the captives destroys Maurice's popularity with the Byzantine troops in the Balkan Peninsula. * Summer – Balkan Campaign: The Byzantine generals Priscus and Comentiolus join their forces at Singidunum (modern Belgrade), and move downstream to the fortress city of Viminacium ( Serbia). The Byzantines cross the Danube River and invade Upper Moesia, where they defeat the Avars in open battle. * Priscus pursues the flee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2321 Lužnice
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lužnice (river)
The Lužnice (; german: Lainsitz) is a river in the Czech Republic (204 km) starting in Austria (4 km). It flows into the Vltava river in Týn nad Vltavou (approximately 50 km north of České Budějovice). The river drains 4,226 square kilometers. The river was first mentioned in sources in the year 1179. The name is derived from an old Czech for ''water flowing through the meads''. Several places on the river are popular destinations for recreation and canoeing. Towns and cities on the Lužnice river * Weitra (Austria) * Gmünd (Austria) * České Velenice * Suchdol nad Lužnicí * Třeboň * Veselí nad Lužnicí * Soběslav * Planá nad Lužnicí * Sezimovo Ústí * Tábor * Bechyně * Týn nad Vltavou Týn nad Vltavou (; german: Moldautein) is a town in České Budějovice District in the South Bohemian Region of the Czech Republic. It has about 7,800 inhabitants. It lies on the Vltava river. The town centre is well preserved and is protected b ... Referen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veselí Nad Lužnicí
Veselí nad Lužnicí (; german: Wesseli an der Lainsitz) is a town in Tábor District in the South Bohemian Region of the Czech Republic. It has about 6,300 inhabitants. It lies at the confluence of the Lužnice and Nežárka rivers. Administrative parts The town is made up of town parts of Veselí nad Lužnicí I and Veselí nad Lužnicí II, and village of Horusice. Geography Veselí nad Lužnicí is located about south of Tábor and northeast of České Budějovice. It lies at the confluence of the Lužnice and Nežárka rivers. Veselí nad Lužnicí is situated on the northern edge of the Třeboň Basin and is known for its fish ponds and pine forests. There are five artificial lakes south of the town, used for recreational purposes; these were created between 1952 and 1986 by flooding former gravel and sand quarries. An educational trail runs around them. Horusický pond, the second largest pond in the country with , lies southwest of the town. The southern part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles University In Prague
Charles University ( cs, Univerzita Karlova, UK; la, Universitas Carolina; german: Karls-Universität), also known as Charles University in Prague or historically as the University of Prague ( la, Universitas Pragensis, links=no), is the oldest and largest university in the Czech Republic. It is one of the List of oldest universities in continuous operation, oldest universities in Europe in continuous operation. Today, the university consists of 17 faculties located in Prague, Hradec Králové, and Plzeň. Charles University belongs among the top three universities in Central and Eastern Europe. It is ranked around 200–300 in the world. History Medieval university (1349–1419) The establishment of a medieval university in Prague was inspired by Holy Roman Emperor Charles IV, Holy Roman Emperor, Charles IV. He asked his friend and ally, Pope Clement VI, to do so. On 26 January 1347 the pope issued the bull establishing a university in Prague, modeled on the University of Paris, ... [...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 ( |
