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2032 Ethel
2032 Ethel, provisional designation , is a dark background asteroid from the outer regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered on 30 July 1970, by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The asteroid was named after Irish writer Ethel Voynich. Orbit and classification ''Ethel'' 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 2.7–3.5 AU once every 5 years and 5 months (1,967 days; semi-major axis 3.07 AU). Its orbit has an eccentricity of 0.13 and an inclination of 2 ° with respect to the ecliptic. The body's observation arc begins with it identification as at Goethe Link Observatory in February 1952, more than 18 years prior to its official discovery observation Nauchnyj. Physical characteristics Diameter and albedo According to the survey carried out by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamara Smirnova
Tamara Mikhaylovna Smirnova (russian: Тама́ра Миха́йловна Смирно́ва; 1935–2001) was a Soviet Union, Soviet/Russian astronomer and a discoverer of minor planets and comets. Career From 1966 to 1988, Smirnova was a staff member of the Institute of Theoretical Astronomy at Saint Petersburg, Leningrad. She is credited by the Minor Planet Center with the discovery of 135 numbered minor planets during 1966–1984. She also co-discovered the periodic comet 74P/Smirnova-Chernykh, along with Nikolai Stepanovich Chernykh. The main-belt asteroid 5540 Smirnova, discovered by herself in 1971, was named in her honor following a proposal by the ''Institute of Theoretical Astronomy''. Naming citation was published on 17 March 1995 (). List of discovered minor planets See also * References 1935 births 2001 deaths Soviet women scientists Discoverers of asteroids Discoverers of comets Discoveries by Tamara Mikha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Observation Arc
In observational astronomy, the observation arc (or arc length) of a Solar System body is the time period between its earliest and latest observations, used for tracing the body's path. It is usually given in days or years. The term is mostly used in the discovery and tracking of asteroids and comets. Arc length has the greatest influence on the accuracy of an orbit. The number and spacing of intermediate observations has a lesser effect. Short arcs A very short arc leaves a high uncertainty parameter. The object might be in one of many different orbits, at many distances from Earth. In some cases, the initial arc was too short to determine if the object was in orbit around the Earth, or orbiting out in the asteroid belt. With a 1-day observation arc, was thought to be a trans-Neptunian dwarf planet, but is now known to be a 1 km main-belt asteroid. With an observation arc of 3 days, was thought to be a Mars-crossing asteroid that could be a threat to Earth, but was later ... [...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] |
The Gadfly
''The Gadfly'' is a novel by Irish-born British writer Ethel Voynich, published in 1897 (United States, June; Great Britain, September of the same year), set in 1840s Italy under the dominance of Austria, a time of tumultuous revolt and uprisings. The story centres on the life of the protagonist, Arthur Burton. A thread of a tragic relationship between Arthur and his love, Gemma, simultaneously runs through the story. It is a tale of faith, disillusionment, revolution, romance, and heroism. Themes The book, set during the Italian ''Risorgimento'', is primarily concerned with the culture of revolution and revolutionaries. Arthur, the eponymous Gadfly, embodies the tragic Romantic hero, who comes of age and returns from abandonment to discover his true state in the world and fight against the injustices of the current one. The landscape of Italy, in particular the Alps, is a pervading focus of the book, with its often lush descriptions of scenery conveying the thoughts and mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victorian Literature
Victorian literature refers to English literature during the reign of Queen Victoria (1837–1901). The 19th century is considered by some to be the Golden Age of English Literature, especially for British novels. It was in the Victorian era that the novel became the leading literary genre in English. English writing from this era reflects the major transformations in most aspects of English life, from scientific, economic, and technological advances to changes in class structures and the role of religion in society. Famous novelists from this period include Rudyard Kipling, Charles Dickens, William Thackeray, the three Brontë sisters, George Eliot, and Thomas Hardy. While the Romantic period was a time of abstract expression and inward focus, essayists, poets, and novelists during the Victorian era began to direct their attention toward social issues. Writers such as Thomas Carlyle called attention to the dehumanizing effects of the Industrial Revolution and what Carlyle calle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethel Lilian Voynich
Ethel Lilian Voynich, ''née'' Boole (11 May 1864 – 27 July 1960) was an Irish-born British novelist and musician, and a supporter of several revolutionary causes. She was born in Cork (city), Cork, but grew up in Lancashire, England. Voynich was a significant figure, not only on the late Victorian literature, Victorian literary scene, but also in Russian émigré circles. She is best known for her novel ''The Gadfly'', which became hugely popular in her lifetime, especially in Russia. Biography Ethel Lilian Boole was born on 11 May 1864, at Lichfield Cottage, Blackrock, Cork, Blackrock, Ballintemple, Cork, the youngest daughter of English parents, mathematician George Boole (father of Boolean logic), and mathematician and educationalist Mary Everest Boole, Mary Everest, who was the niece of George Everest and a writer for ''Crank'', an early-20th-century periodical. Her father died six months after she was born. Her mother returned to her native England with her daughters, and ... [...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 ( |
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] |
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] |
Astronomical Albedo
Albedo (; ) is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that reflects all incident radiation. Surface albedo is defined as the ratio of radiosity ''J''e to the irradiance ''E''e (flux per unit area) received by a surface. The proportion reflected is not only determined by properties of the surface itself, but also by the spectral and angular distribution of solar radiation reaching the Earth's surface. These factors vary with atmospheric composition, geographic location, and time (see position of the Sun). While bi-hemispherical reflectance is calculated for a single angle of incidence (i.e., for a given position of the Sun), albedo is the directional integration of reflectance over all solar angles in a given period. The temporal resolution may range from seconds (as obtained from flux measurements) to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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