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Neith (hypothetical Moon)
Neith is a hypothetical natural satellite of Venus reportedly sighted by Giovanni Cassini in 1672 and by several other astronomers in following years. The first supposed sighting of this moon was in 1650. It was 'observed' up to 30 times by astronomers until 1770, when there were no new sightings and it was not found during the transit of Venus in 1761 and 1769. Discovery In 1672, Giovanni Cassini found a small object close to Venus. He did not take great note of his observation, but when he saw it again in 1686, he made a formal announcement of a possible moon of Venus. The object was seen by many other astronomers over a large period of time: by James Short in 1740, by Andreas Mayer in 1759, by Joseph Louis Lagrange in 1761, another eighteen observations in 1761, including one in which a small spot was seen following Venus while the planet was in a transit across the Sun, eight observations in 1764, and by Christian Horrebow in 1768. Summary of sightings Observations Man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fontana Venus Satellites
Fontana may refer to: Places Italy *Fontana Liri, comune in the Province of Frosinone *Fontanafredda, comune in the Province of Pordenone *Fontanarosa, comune in the Province of Avellino *Francavilla Fontana, comune in the Province of Brindisi *Serrara Fontana, comune in the Province of Napoli Switzerland * Fontana GR, a settlement in Tarasp in the Canton of Graubünden * Fontana (Airolo), a settlement in Airolo, in the Canton of Ticino United States * Fontana, California * Fontana, Kansas * Fontana, Texas * Fontana Village, North Carolina *Fontana-on-Geneva Lake, Wisconsin *Fontana Dam in the U.S. state of North Carolina Elsewhere * Fontana, Chaco, a settlement in San Fernando Department, Chaco Province, Argentina *Fontana, Gozo, on Gozo Island, Republic of Malta *Fontana (Belgrade), a neighborhood of Belgrade, Serbia *Fontana (lunar crater), an impact crater on the Moon *Fontana (Martian crater), an impact craters on Mars *Fontana metro station, a rapid transit station in Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vienna Observatory
The Vienna Observatory (german: Universitätssternwarte Wien) is an astronomical observatory in Vienna, Austria. It is part of the University of Vienna. The first observatory was built in 1753–1754 on the roof of one of the university buildings. A new observatory was built between 1874 and 1879, and was finally inaugurated by Emperor Franz Joseph I of Austria in 1883. The main dome houses a refractor with a diameter of and a focal length of built by the Grubb Telescope Company. At that time, it was the world's largest refracting telescope. Land for the new observatory was purchased in 1872, and was noted for having increased elevations (about 150 ft) above the city. Construction started in March 1874, and it was opened with new instruments in 1877. The overall design had various rooms and three main domes, one for the Grubb refractor and then two smaller domes, and some terraces. At this time there were larger aperture reflecting telescopes, and the main technologies o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Hypothetical Astronomical Objects
Various unknown astronomical objects have been hypothesized throughout recorded history. For example, in the 5th century BCE, the philosopher Philolaus defined a hypothetical astronomical object which he called the "Central Fire", around which he proposed other celestial bodies (including the Sun) moved.Marco Ceccarelli, ''Distinguished Figures in Mechanism and Machine Science'' (2007), p. 124. Types of hypothetical astronomical objects Hypothetical astronomical objects have been speculated to exist both inside and outside of the Solar System, and speculation has included different kinds of stars, planets, and other astronomical objects. * For hypothetical astronomical objects in the Solar System, see: List of hypothetical Solar System objects * For hypothetical stars, see: Hypothetical star * For hypothetical brown dwarfs, see: List of brown dwarfs * For hypothetical black holes, see: Hypothetical black hole * For extrasolar moons, all of which are currently hypothetical, se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theta Librae
θ Librae, Latinised as Theta Librae, is a single star in the southern zodiac constellation of Libra, near the constellation border with Scorpius. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.14. The distance to this star is approximately 168 light years, as determined by parallax, and it is drifting further away with a radial velocity of 5 km/s. The position of this star near the ecliptic means it is subject to lunar occultations. This object is an aging giant star with a stellar classification of G9IIIb. Having exhausted the supply of hydrogen at its core, it has cooled and expanded; at present it has 12.3 times the girth of the Sun. The star has an estimated mass about 47% greater than the Sun. It is radiating about 68 times the luminosity of the Sun from its photosphere at an effective temperature of about . It is probably on the red giant branch, which indicates it is generating energy through hydrogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nu Geminorum
Nu Geminorum, Latinized from ν Geminorum, is a triple star system in the constellation Gemini. It has an apparent visual magnitude of 4.16, which is bright enough to be visible to the naked eye on a dark night. Based upon an annual parallax shift of 5.99 mas, it is located at a distance of roughly 540 light years from the Sun. The position of this system near the ecliptic means it is subject to lunar occultations. The inner components of this multiple star system have an orbital period of about 54 days and a nearly circular orbit with an eccentricity of 0.056. There is some uncertainty in the spectral type, with classifications ranging from a main sequence star to a giant. Orbiting the inner pair is a classical Be star, with an orbital period of 19.1 years and an eccentricity of 0.24. The two orbits are co-directional and roughly coplanar. The system is overall dynamically stable, and shows no signs of Kozai-Lidov cycles In celestial mechanics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
71 Orionis
This is the list of notable stars in the constellation Orion, sorted by decreasing brightness. See also *List of stars by constellation All stars but one can be associated with an IAU constellation. IAU constellations are areas of the sky. Although there are only 88 IAU constellations, the sky is actually divided into 89 irregularly shaped boxes as the constellation Serpens is spl ... References * * * * * {{Portal bar, Astronomy, Stars, Spaceflight, Outer space, Solar System *List Orion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M Tauri
104 Tauri (104 Tau) is the Flamsteed designation for a star in the equatorial constellation of Taurus. It has an apparent magnitude of 4.92, which is bright enough to be seen with the naked eye. Based upon parallax measurements, this star is located about 50 light-years from the Sun. It is moving further from the Sun with a heliocentric radial velocity of +20 km/s. This star has a stellar classification of G4 V, which suggests it is an ordinary G-type main-sequence star that is generating energy through hydrogen fusion at its stellar core. It is an estimated 10 billion years old and is spinning with a projected rotational velocity of 10 km/s. The star has about the same mass as the Sun, with 1.6 times the Sun's radius. It is radiating 2.4 times the Sun's luminosity from its photosphere at an effective temperature of . The apparent brightness of this star indicates that it is a young, population I star. However, the chemical abundances in its o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chi Orionis
Chi Orionis (Chi Ori, χ Orionis, χ Ori) is the name of two stars: * Chi1 Orionis (54 Orionis, HD 39587) * Chi2 Orionis (62 Orionis, HD 41117) All of them were member of asterism 司怪 (Sī Guài), ''Deity in Charge of Monsters'', '' Turtle Beak'' mansion. References {{SIA , astronomical objects Orionis, Chi Orion (constellation) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Royal Academies For Science And The Arts Of Belgium
The Royal Academies for Science and the Arts of Belgium (RASAB) is a non-governmental association which promotes and organises science and the arts in Belgium by coordinating the national and international activities of its constituent academies such as the National Scientific Committees and the representation of Belgium in international scientific organisations. RASAB was formed as a non-profit organization (Association without lucrative purpose) in 2001 by the Dutch-speaking academy KVAB ( Koninklijke Vlaamse Academie van België voor Wetenschappen en Kunsten i.e. ''Royal Flemish Academy of Belgium for Science and the Arts'') and by the French-speaking academy ARB ( i.e. ''The Royal Academy of Science, Letters and Fine Arts of Belgium''). The association is headquartered in the buildings of the former Royal Stables at the Academy Palace, Hertogsstraat 1 Rue Ducale B-1000 Brussels. History Academies RASAB was founded in 2001 by the two Belgian academies which are connecte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neith
Neith ( grc-koi, Νηΐθ, a borrowing of the Demotic (Egyptian), Demotic form egy, nt, likely originally to have been nrt "she is the terrifying one"; Coptic language, Coptic: ⲛⲏⲓⲧ; also spelled Nit, Net, or Neit) was an early ancient Egyptian deities, ancient Egyptian deity. She was said to be the first and the prime creator, who created the universe and all it contains, and that she governs how it functions. She was the goddess of the cosmos, fate, wisdom, water, rivers, mothers, childbirth, hunting, weaving, and war. Neith was the tutelary deity of Sais, Egypt, Sais ( cop, ⲥⲁⲓ ''Sai'' from Egyptian ''Zau''), where her cult was centered in the western Nile Delta of Lower Egypt. It is attested as early as the First Dynasty of Egypt, First Dynasty. Neith was also one of the three tutelary deities of the southern city of Latopolis ( grc-koi, Λατόπολις) or Esna (Snē) (Sahidic Coptic: from earlier Egyptian: ''t3-snt'', also ''iwnyt'') Latopolis was locat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Observatory Of Belgium
The Royal Observatory of Belgium (french: link=no, Observatoire Royal de Belgique, nl, Koninklijke Sterrenwacht van België), has been situated in the Uccle municipality of Brussels (Belgium) since 1890. It was first established in Saint-Josse-ten-Noode in 1826 by William I under the impulse of Adolphe Quetelet. It was home to a diameter aperture Zeiss reflector in the first half of the 20th century, one of the largest telescopes in the world at the time. It owns a variety of other astronomical instruments, such as astrographs, as well as a range of seismograph equipment (for detecting earthquakes). Its main activities are: * Reference systems and geodynamics; * Astrometry and dynamics of celestial bodies; * Astrophysics; * Solar physics. The asteroid 1276 Ucclia is named in honour of the city and the observatory and 16908 Groeselenberg is named for the hill the observatory is located on. History 19th century Adolphe Quetelet first petitioned the government of the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Charles Houzeau
Jean-Charles Houzeau de Lehaie (October 7, 1820 – July 12, 1888) was a Belgian astronomer and journalist. A French speaker, he moved to New Orleans after getting in trouble for his politics in Belgium. In the U.S. he continued his journalistic, astronomical, and political pursuits. He was an abolitionist and joined with unionists in Texas before the American Civil War. In New Orleans he worked with Dr. Louis Charles Roudanez at the newspapers he founded in the 1860s. Houzeau migrated to Jamaica in the postwar years. After a period here, he received reinstatement from an observatory in Brussels and returned to Europe to work. He came back to Texas for an astronomical event. He published stirring memoirs and other accounts of his adventures and contacts during his travels, as well as several works on astronomical subjects. Life Houzeau was born in 1820 in Havré (a small city near Mons); at the time it was within the Netherlands, and was later included in the independent nat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
