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Hunnia
1452 Hunnia, provisional designation , is a carbonaceous Meliboean asteroid from the outer regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 26 February 1938, by Hungarian astronomer György Kulin at the Konkoly Observatory in Budapest. The asteroid was named in honor of the Hungarian nation. Orbit and classification ''Hunnia'' is a member of the Meliboea family (), a smaller asteroid family of a few hundred carbonaceous outer-belt asteroids, named after 137 Meliboea. It orbits the Sun at a distance of 2.5–3.7 AU once every 5 years and 6 months (2,003 days). Its orbit has an eccentricity of 0.20 and an inclination of 14 ° with respect to the ecliptic. The body's observation arc begins at Goethe Link Observatory in March 1949, more than 11 years after its official discovery observation at Konkoly. (The large time span without astrometric follow-up observations coincides with the period of WWII.) Physical characteris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
György Kulin
György Kulin ( Nagyszalonta 28 January 1905 – 22 April 1989 Budapest) was a Hungarian astronomer and discoverer of minor planets. He discovered 21 asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...s and is a co-discoverer of the comet C/1942 C1 (Whipple-Bernasconi-Kulin). In addition to astronomy he also wrote some science fiction. The asteroid 3019 Kulin was named in his honor. References External links Kulin György emlékoldal (Remembering György Kulin)– impressive website associated with the celebrations held in January 2005, the centenary of his birth, with picture gallery and downloadable (but large) sound and video files. Includes comprehensive bibliography. The site is in Hungarian. Accessed 20 July 2005 1905 births 1989 deaths Discoverers of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Eccentricity
In astrodynamics, the orbital eccentricity of an astronomical object is a dimensionless parameter that determines the amount by which its orbit around another body deviates from a perfect circle. A value of 0 is a circular orbit, values between 0 and 1 form an elliptic orbit, 1 is a parabolic escape orbit (or capture orbit), and greater than 1 is a hyperbola. The term derives its name from the parameters of conic sections, as every Kepler orbit is a conic section. It is normally used for the isolated two-body problem, but extensions exist for objects following a rosette orbit through the Galaxy. Definition In a two-body problem with inverse-square-law force, every orbit is a Kepler orbit. The eccentricity of this Kepler orbit is a non-negative number that defines its shape. The eccentricity may take the following values: * circular orbit: ''e'' = 0 * elliptic orbit: 0 < ''e'' < 1 * [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnitude (astronomy)
In astronomy, magnitude is a unitless measure of the brightness Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light. In other words, brightness is the perception elicited by the luminance of a visual target. The perception is not linear to luminance, ... of an astronomical object, object in a defined passband, often in the visible spectrum, visible or infrared spectrum, but sometimes across all wavelengths. An imprecise but systematic determination of the magnitude of objects was introduced in ancient times by Hipparchus. The scale is Logarithmic scale, logarithmic and defined such that a magnitude 1 star is exactly 100 times brighter than a magnitude 6 star. Thus each step of one magnitude is \sqrt[5] \approx 2.512 times brighter than the magnitude 1 higher. The brighter an object appears, the lower the value of its magnitude, with the brightest objects reaching negative values. Astronomers use two different defini ... [...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] |
László L
László () is a Hungarian male given name and surname after the King-Knight Saint Ladislaus I of Hungary (1077–1095). It derives from Ladislav, a variant of Vladislav. Other versions are Lessl or Laszly. The name has a history of being frequently anglicized as Leslie. It is the most common male name among the whole Hungarian male population since 2003.https://nyilvantarto.hu People with this name are listed below by field. Given name Science and mathematics * László Babai (b. 1950), Hungarian-born American mathematician and computer scientist * László Lovász (b. 1948), Hungarian mathematician * László Fejes Tóth (1915–2005), Hungarian mathematician * László Fuchs (b. 1924), Hungarian-American mathematician * László Rátz (1863–1930), influential Hungarian mathematics high school teacher * László Tisza (1907–2009), Professor of Physics Emeritus at the Massachusetts Institute of Technology * László Mérő (b. 1949), Hungarian research psychologist and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyula M
Gyula may refer to: * Gyula (title), Hungarian title of the 9th–10th century * Gyula (name), Hungarian male given name, derived from the title ; People * Gyula II, the ''gyula'' who was baptized in Constantinople around 950 * Gyula III, the ''gyula'' who was defeated by King Stephen I around 1003 ; Places * Gyula, Hungary, town in Hungary * Gyulaháza, village in Hungary * Gyulakeszi, village in Hungary * , Hungarian name of Alba Iulia, Romania {{disambiguation, hn, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krisztián Sárneczky
Krisztián Sárneczky (born 6 November 1974 in Budapest) is a Hungarian people, Hungarian teacher of geography and prolific discoverer of minor planets and supernovae, researching at Konkoly Observatory in Budapest, Hungary. He is a board member of the ''Hungarian Astronomical Association'' (HAA) and member of the American Association of Variable Star Observers, leader of the Comet Section of the HAA, and is a contributor in the editorial work of ''Hungarian Astronomical Almanach''. Personal life In 1990 he joined the ''Hungarian Astronomical Association'' and became the Co-ordinator of the Cometary Section the same year. In 1994 he became a member of the Executive Committee and in 1996 he was appointed secretary. In 1996 he also joined the ''American Association of Variable Star Observers'' (AAVSO). Krisztián Sárneczky has published a number of articles in the astronomy community, and has a large number of asteroid discoveries to his credit ''(see )''. Professional experie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lightcurve
In astronomy, a light curve is a graph of light intensity of a celestial object or region as a function of time, typically with the magnitude of light received on the y axis and with time on the x axis. The light is usually in a particular frequency interval or band. Light curves can be periodic, as in the case of eclipsing binaries, Cepheid variables, other periodic variables, and transiting extrasolar planets, or aperiodic, like the light curve of a nova, a cataclysmic variable star, a supernova or a microlensing event or binary as observed during occultation events. The study of the light curve, together with other observations, can yield considerable information about the physical process that produces it or constrain the physical theories about it. Variable stars Graphs of the apparent magnitude of a variable star over time are commonly used to visualise and analyse their behaviour. Although the categorisation of variable star types is increasingly done from their spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroid Spectral Type
An asteroid spectral type is assigned to asteroids based on their emission spectrum, color, and sometimes albedo. These types are thought to correspond to an asteroid's surface composition. For small bodies that are not internally differentiated, the surface and internal compositions are presumably similar, while large bodies such as Ceres and Vesta are known to have internal structure. Over the years, there has been a number of surveys that resulted in a set of different taxonomic systems such as the Tholen, SMASS and Bus–DeMeo classifications. Taxonomic systems In 1975, astronomers Clark R. Chapman, David Morrison, and Ben Zellner developed a simple taxonomic system for asteroids based on color, albedo, and spectral shape. The three categories were labelled " C" for dark carbonaceous objects, " S" for stony (silicaceous) objects, and "U" for those that did not fit into either C or S. This basic division of asteroid spectra has since been expanded and clarified.Thomas H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WWII
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, mass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrometric
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. History The history of astrometry is linked to the history of star catalogues, which gave astronomers reference points for objects in the sky so they could track their movements. This can be dated back to Hipparchus, who around 190 BC used the catalogue of his predecessors Timocharis and Aristillus to discover Earth's precession. In doing so, he also developed the brightness scale still in use today. Hipparchus compiled a catalogue with at least 850 stars and their positions. Hipparchus's successor, Ptolemy, included a catalogue of 1,022 stars in his work the ''Almagest'', giving their location, coordinates, and brightness. In the 10th century, Abd al-Rahman al-Sufi carried out observations on the stars and described their positions, magnitu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goethe Link Observatory
The Goethe Link Observatory, observatory code 760, is an astronomical observatory near Brooklyn, Indiana, United States. It is owned by Indiana University and operated by the Indiana Astronomical Society https://iasindy.org/about.html, which efforts are dedicated to the pursuit of amateur astronomy. It is named in honor of amateur astronomer Dr. Goethe Link, an Indianapolis surgeon, who built it with his private funds. Construction of the observatory started in 1937, and the telescope was first operated in 1939. In 1948, he donated the observatory to Indiana University. From 1949 until 1966, the Indiana Asteroid Program was conducted at Goethe Link, using a 10-inch Cooke triplet astrograph (''f/''6.5). The program resulted in the discovery of 119 asteroids, which were credited by the Minor Planet Center to "Indiana University". When light pollution began to degrade the Goethe Link Observatory's capabilities in the 1960s, Indiana University built a new facility in the Morganâ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
