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802 Epyaxa
802 Epyaxa, provisional designation , is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7.5 kilometers in diameter. It was discovered by German astronomer Max Wolf at the Heidelberg Observatory in southern Germany, on 20 March 1915. Description 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 at a distance of 2.0–2.4 AU once every 3 years and 3 months (1,189 days). Its orbit shows an eccentricity of 0.08 and is tilted by 5 degrees to the plane of the ecliptic. From 2009 to 2014, seven photometric lightcurve analysis rendered a well-defined, concurring rotation period of 4.39 hours ''(also see adjunct infobox)''. According to the survey carried out by the U.S. Wide-field Infrared Survey Explorer Wide-field Infrared Survey Explorer (WISE, List of observatory codes, observatory code C51, Explorer 92 and MIDEX-6) was a NASA infrared astronomy Spac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lightcurve
In astronomy, a light curve is a graph (discrete mathematics), graph of the Radiance, light intensity of a celestial object or region as a function of time, typically with the magnitude (astronomy), 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 frequency band, band. Light curves can be periodic, as in the case of eclipsing binary, eclipsing binaries, Cepheid variables, other periodic variables, and Methods of detecting extrasolar planets#Transit photometry, transiting extrasolar planets; or aperiodic, like the light curve of a nova, cataclysmic variable star, supernova, gravitational microlensing, microlensing event, or binary as observed during occultation events. The study of a light curve and other observations can yield considerable information about the physical process that produces such a light curve, or constrain the physical theories about it. Variable stars Graphs of the ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wide-field Infrared Survey Explorer
Wide-field Infrared Survey Explorer (WISE, List of observatory codes, observatory code C51, Explorer 92 and MIDEX-6) was a NASA infrared astronomy Space observatory, space telescope in the Explorers Program launched in December 2009.. . WISE List of minor planet discoverers#WISE, discovered thousands of minor planets and numerous star clusters. Its observations also supported the discovery of the first Y dwarf, Y-type brown dwarf and Earth trojan, Earth trojan asteroid. ... . WISE performed an all-sky astronomical survey with images in 3.4, 4.6, 12 and 22 μm wavelength range bands, over ten months using a diameter infrared telescope in Geocentric orbit, Earth orbit. After its solid hydrogen coolant depleted, it was placed in Hibernation (spaceflight), hibernation mode in February 2011. In 2013, NASA reactivated the WISE telescope to search for near-Earth objects (NEO), such as comets and asteroids, that could collide with Earth. The reactivation mission was called Near-Eart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jet Propulsion Laboratory
The Jet Propulsion Laboratory (JPL) is a Federally funded research and development centers, federally funded research and development center (FFRDC) in La Cañada Flintridge, California, Crescenta Valley, United States. Founded in 1936 by California Institute of Technology (Caltech) researchers, the laboratory is now owned and sponsored by NASA and administered and managed by Caltech. The primary function of the laboratory 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 (DSN). Among the major active projects at the laboratory, some are the Mars 2020 mission, which includes the ''Perseverance (rover), Perseverance'' rover; the Mars Science Laboratory mission, including the ''Curiosity (rover), Curiosity'' rover; the ''Mars Reconnaissance Orbiter''; the ''Juno (spacecraft), Juno'' spacecraft orbiting Jupiter; the ''Soil Moisture Active P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achaemenid Empire
The Achaemenid Empire or Achaemenian Empire, also known as the Persian Empire or First Persian Empire (; , , ), was an Iranian peoples, Iranian empire founded by Cyrus the Great of the Achaemenid dynasty in 550 BC. Based in modern-day Iran, it was the List of largest empires#Timeline of largest empires to date, largest empire by that point in history, spanning a total of . The empire spanned from the Balkans and ancient Egypt, Egypt in the west, most of West Asia, the majority of Central Asia to the northeast, and the Indus Basin, Indus Valley of South Asia to the southeast. Around the 7th century BC, the region of Persis in the southwestern portion of the Iranian plateau was settled by the Persians. From Persis, Cyrus rose and defeated the Medes, Median Empire as well as Lydia and the Neo-Babylonian Empire, marking the establishment of a new imperial polity under the Achaemenid dynasty. In the modern era, the Achaemenid Empire has been recognised for its imposition of a succ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cilicia (satrapy)
Cilicia () is a geographical region in southern Anatolia, extending inland from the northeastern coasts of the Mediterranean Sea. Cilicia has a population ranging over six million, concentrated mostly at the Çukurova, Cilician plain (). The region includes the provinces of Mersin Province, Mersin, Adana Province, Adana, Osmaniye Province, Osmaniye and Hatay Province, Hatay. Name The name of Cilicia () was derived from (), which was the name used by the Neo-Assyrian Empire to designate the western part of what would become Cilicia. The English spelling is the same as the Latin, as it was transliterated directly from the Greek form Κιλικία. The palatalization of c occurring in Western Europe in later Vulgar Latin () accounts for its modern pronunciation in English. Geography Cilicia extends along the Mediterranean Sea, Mediterranean coast east from Pamphylia to the Nur Mountains, which separate it from Syria. North and east of Cilicia stand the rugged Taurus Mounta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
7212 Artaxerxes
7 (seven) is the natural number following 6 and preceding 8. It is the only prime number preceding a cube. As an early prime number in the series of positive integers, the number seven has symbolic associations in religion, mythology, superstition and philosophy. The seven classical planets resulted in seven being the number of days in a week. 7 is often considered lucky in Western culture and is often seen as highly symbolic. Evolution of the Arabic digit For early Brahmi numerals, 7 was written more or less in one stroke as a curve that looks like an uppercase vertically inverted (ᒉ). The western Arab peoples' main contribution was to make the longer line diagonal rather than straight, though they showed some tendencies to making the digit more rectilinear. The eastern Arab peoples developed the digit from a form that looked something like 6 to one that looked like an uppercase V. Both modern Arab forms influenced the European form, a two-stroke form consisting of a ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artaxerxes II Of Persia
Arses (; 445 – 359/8 BC), known by his regnal name Artaxerxes II ( ; ), was King of Kings of the Achaemenid Empire from 405/4 BC to 358 BC. He was the son and successor of Darius II () and his mother was Parysatis. Soon after his accession, Artaxerxes II faced opposition from his younger brother Cyrus the Younger, who assembled an army composed of troops from his Lydian and Ionian satrapies as well as Greek mercenaries in his bid for the throne. The forces of the brothers clashed at Cunaxa in 401 BC, which resulted in the defeat and death of Cyrus. Following this, Artaxerxes II had to contend with several other revolts; a revolt by Evagoras I () in Cyprus between 391–380 BC, by the Phoenicians in , and most importantly, the revolts by the western satraps (known as the Great Satraps' Revolt) in the 360s and 350s BC, led by distinguished figures such as Datames, Ariobarzanes, and Autophradates. The rulers of the Parthian Empire notably considered Artaxerxes II their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyrus The Younger
Cyrus the Younger ( ''Kūruš''; ; died 401 BC) was an Achaemenid prince and general. He ruled as satrap of Lydia and Ionia from 408 to 401 BC. Son of Darius II and Parysatis, he died in 401 BC in battle during a failed attempt to oust his elder brother, Artaxerxes II, from the Persian throne. The history of Cyrus and of the retreat of his Greek mercenaries is told by Xenophon in his '' Anabasis''. Another account, probably from Sophaenetus of Stymphalus, was used by Ephorus. Further information is contained in the excerpts from Artaxerxes II's physician, Ctesias, by Photius; ''Plutarch’s Lives'' of Artaxerxes II and Lysander; and Thucydides' ''History of Peloponnesian War''. These are the only early sources of information on Cyrus the Younger. Biography According to Xenophon, Cyrus the Younger was born after the accession of his father in 424 BC. He had an elder brother, Arsicas (whose name changed to Artaxerxes II when he ascended the throne), and two younger bro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cilicia
Cilicia () is a geographical region in southern Anatolia, extending inland from the northeastern coasts of the Mediterranean Sea. Cilicia has a population ranging over six million, concentrated mostly at the Cilician plain (). The region includes the provinces of Mersin, Adana, Osmaniye and Hatay. Name The name of Cilicia () was derived from (), which was the name used by the Neo-Assyrian Empire to designate the western part of what would become Cilicia. The English spelling is the same as the Latin, as it was transliterated directly from the Greek form Κιλικία. The palatalization of c occurring in Western Europe in later Vulgar Latin () accounts for its modern pronunciation in English. Geography Cilicia extends along the Mediterranean coast east from Pamphylia to the Nur Mountains, which separate it from Syria. North and east of Cilicia stand the rugged Taurus Mountains, which separate it from the high central plateau of Anatolia, and which are pierced by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syennesis (5th Century)
Syennesis III () was a ruler of ancient Cilicia in the 5th century BCE. Rule Syennesis was a contemporary of Artaxerxes II of Persia, and when Cyrus the Younger, marching against Artaxerxes in 401 BCE, arrived at the borders of Cilicia, he found the passes guarded by Syennesis, who, however, withdrew his troops on receiving intelligence that the force advanced by Cyrus under Meno had already entered Cilicia, and that the combined fleet of the Lacedaemonians and the prince, under Samius and Tamos, was sailing round from Ionia. When Cyrus reached Tarsus, the Cilician capital, he found that Meno's soldiers had sacked the city, and commanded Syennesis to appear before him. Syennesis had fled for refuge to a stronghold among the mountains, but he was induced by his wife, Epyaxa, to obey the summons of Cyrus. Here he received gifts of honor from Cyrus, whom he supplied in his turn with a large sum of money and a considerable body of troops under the command of one of his sons. At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epyaxa (queen)
''Epyaxa'' is a genus of moths in the family Geometridae erected by Edward Meyrick Edward Meyrick (25 November 1854 – 31 March 1938) was an English schoolmaster and amateur entomologist. He was an expert on microlepidoptera and some consider him one of the founders of modern microlepidoptera systematics. Life and work Ed ... in 1883. Species * '' Epyaxa agelasta'' (Turner, 1904) * '' Epyaxa centroneura'' (Meyrick, 1891) * '' Epyaxa epia'' (Turner, 1922) * '' Epyaxa hyperythra'' (Lower, 1892) * '' Epyaxa lucidata'' Walker, 1862 * '' Epyaxa pyrrhobaphes'' (Turner, 1926) * '' Epyaxa rosearia'' Doubleday, 1843 – New Zealand looper, plantain moth * '' Epyaxa sodaliata'' (Walker, 1862) * '' Epyaxa subidaria'' (Guenée, 1857) – subidaria moth References * Xanthorhoini {{Xanthorhoini-stub ... [...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] |
