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Sigma Librae
Sigma Librae is a star in the constellation of Libra. It has the proper name Brachium, is its Bayer designation. The apparent visual magnitude is +3.29, making it visible to the naked eye. Based upon parallax measurements, this star is at a distance of roughly from the Sun, with a 2% margin of error. At that distance, the visual magnitude is diminished by from extinction caused by intervening gas and dust. Nomenclature ''σ Librae'' ( Latinised to ''Sigma Librae'') is the star's current Bayer designation. It can be abbreviated as or . The star originally bore the designation Gamma Scorpii and did not receive its current designation until the new designation was agreed upon by Commission 3 of the International Astronomical Union (IAU) on July 31, 1930. It bore the traditional Latin names ''Brachium'' (arm) and ''Cornu'' (horn), and the non-unique minor Arabic names ''Zuben el Genubi'' (southern claw) (shared with Alpha Librae); ''Zuben Hakrabi'' (shared with Gamma Lib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
J2000
In astronomy, an epoch or reference epoch is a moment in time used as a reference point for some time-varying astronomical quantity. It is useful for the celestial coordinates or orbital elements of a celestial body, as they are subject to perturbations and vary with time. These time-varying astronomical quantities might include, for example, the mean longitude or mean anomaly of a body, the node of its orbit relative to a reference plane, the direction of the apogee or aphelion of its orbit, or the size of the major axis of its orbit. The main use of astronomical quantities specified in this way is to calculate other relevant parameters of motion, in order to predict future positions and velocities. The applied tools of the disciplines of celestial mechanics or its subfield orbital mechanics (for predicting orbital paths and positions for bodies in motion under the gravitational effects of other bodies) can be used to generate an ephemeris, a table of values giving ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arabic
Arabic (, , or , ) is a Central Semitic languages, Central Semitic language of the Afroasiatic languages, Afroasiatic language family spoken primarily in the Arab world. The International Organization for Standardization (ISO) assigns language codes to 32 varieties of Arabic, including its standard form of Literary Arabic, known as Modern Standard Arabic, which is derived from Classical Arabic. This distinction exists primarily among Western linguists; Arabic speakers themselves generally do not distinguish between Modern Standard Arabic and Classical Arabic, but rather refer to both as ( "the eloquent Arabic") or simply ' (). Arabic is the List of languages by the number of countries in which they are recognized as an official language, third most widespread official language after English and French, one of six official languages of the United Nations, and the Sacred language, liturgical language of Islam. Arabic is widely taught in schools and universities around the wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Star Names
Chinese star names ( Chinese: , ''xīng míng'') are named according to ancient Chinese astronomy and astrology. The sky is divided into star mansions (, ''xīng xiù'', also translated as "lodges") and asterisms (, ''xīng guān''). The ecliptic is divided into four sectors that are associated with the Four Symbols, guardians in Chinese mythology, and further into 28 mansions. Stars around the north celestial pole are grouped into three enclosures (, ''yuán''). The system of 283 asterisms under the Three Enclosures and Twenty-Eight Mansions was established by Chen Zhuo of the Three Kingdoms period, who synthesized ancient constellations and the asterisms created by early astronomers Shi Shen, Gan De and Wuxian. Since the Han and Jin dynasties, stars have been given reference numbers within their asterisms in a system similar to the Bayer or Flamsteed designations, so that individual stars can be identified. For example, Deneb (α Cyg) is referred to as (''Tiān Jīn S� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
12 Librae ...
This is the list of notable stars in the constellation Libra, sorted by decreasing brightness. See also *List of stars by constellation Color=Blue References * * * * * {{DEFAULTSORT:List of stars in Libra *List Libra Libra generally refers to: * Libra (constellation), a constellation * Libra (astrology), an astrological sign based on the star constellation Libra may also refer to: Arts and entertainment * ''Libra'' (novel), a 1988 novel by Don DeLillo Musi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
50 Hydrae
This is the list of notable stars in the constellation A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object. The first constellati ... Hydra, sorted by decreasing brightness. See also * List of stars by constellation References Bibliography * * * * * {{Stars of Hydra *List Hydra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neck (Chinese Constellation)
The Neck mansion (亢宿, pinyin: Kàng Sù) is one of the Twenty-eight mansions of the Chinese constellations. It is one of the eastern mansions of the Azure Dragon (Chinese constellation), Azure Dragon. In Chinese Cosmology, the Kang Constellation is associated with the Kidney Organ. 亢 is a picture of a person standing with their legs open, as in horse stance, and so holds the quality of strength that comes through a proper foundation. This matches up with Chapter 8 of the Suwen, which says that the Kidney is in charge of strength and fortification. The Kidney houses the Zhi, which is in charge of solid grounding in one’s life purpose. Kang is also the neck or throat of the Azure Dragon of the East, which, while the throat area is ruled by the Lung, has everything to do with sound—pointing to the Kidney’s orifice of the ears. Around the 5th Century BC, it is believed that eclipses would take place in this constellation. This coming together of the Sun and the moon works ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Astronomy
Astronomy in China has a long history stretching from the Shang dynasty, being refined over a period of more than 3,000 years. The Ancient China, ancient Chinese people have identified stars from 1300 BCE, as Chinese star names later categorized in the twenty-eight mansions have been found on oracle bones unearthed at Anyang, dating back to the mid-Shang dynasty. The core of the "mansion" (宿 ''xiù'') system also took shape around this period, by the time of King Wu Ding (1250–1192 BCE). Detailed records of astronomical observations began during the Warring States period (fourth century BCE). They flourished during the Han period (202 BCE – 220 CE) and subsequent dynasties with the publication of star catalogues. Chinese astronomy was equatorial, centered on close observation of circumpolar stars, and was based on different principles from those in traditional Western astronomy, where heliacal risings and settings of zodiac constellations formed the basic ecliptic framew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IAU Working Group On Star Names
The International Astronomical Union (IAU) established a Working Group on Star Names (WGSN) in May 2016 to catalog and standardize proper names for stars for the international astronomical community. It operates under Division C – Education, Outreach and Heritage. The IAU states that it is keen to make a distinction between the terms ''name'' and ''designation''. To the IAU, ''name'' refers to the (usually colloquial) term used for a star in everyday conversation, while ''designation'' is solely alphanumerical, and used almost exclusively in official catalogues and for professional astronomy. (The WGSN notes that transliterated Bayer designations (e.g., Tau Ceti) are considered a special historical case and are treated as designations.) Terms of reference The terms of reference for the WGSN for the period 2016–2018 were approved by the IAU Executive Committee at its meeting on 6 May 2016. In summary, these are to: * establish IAU guidelines for the proposal and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpha Phoenicis
Alpha Phoenicis (α Phoenicis, abbreviated Alpha Phe or α Phe), formally named Ankaa , (with the same pronunciation) is the brightest star in the constellation of Phoenix. Nomenclature ''Alpha Phoenicis'' is the star's Bayer designation. It also bore the traditional name ''Ankaa'' sometime after 1800, from the Arabic العنقاء ''al-ʽanqāʼ'' "the phoenix" for the name of the constellation. The International Astronomical Union has formally adopted the ''Ankaa'' as the proper name for Alpha Phoenicis. Medieval Arab astronomers formed the constellation of the dhow (where Phoenix is), so another popular name for the star is ''Nair al Zaurak'' from نائر الزورق''nayyir az-zawraq'' "the bright (star) of the skiff". The Latin translation is ''Cymbae,'' from ''lūcida cumbae''. In Chinese caused by adaptation of the European southern hemisphere constellations into the Chinese system, (), meaning ''Firebird'', refers to an asterism consisting of α Phoen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
