|
Zeta Draconis
Zeta Draconis (ζ Draconis, abbreviated Zet Dra, ζ Dra) is a binary star in the northern circumpolar constellation of Draco. With an apparent visual magnitude of +3.17, it is the fifth-brightest member of this generally faint constellation. Its distance from the Sun has been measured using the parallax technique, yielding an estimate of roughly . The two components are designated Zeta Draconis A (formally named Aldhibah , after the traditional name of the system) and B. Nomenclature ''ζ Draconis'' ( Latinised to ''Zeta Draconis'') is the system's Bayer designation. The designations of the two components as ''Zeta Draconis A'' and ''B'' derives from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). Zeta Draconis has the old Arabic name الذئب ''al-dhiʼb'' "the wolf" or "the hyena", given in its feminine form "Al Dhiʼbah" (ذئبة) in Allen (1899) (though he mis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draco (constellation)
Draco is a constellation in the far northern sky. Its name is Latin for dragon. It was one of the 48 Lists of constellations, constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations today. The north pole of the ecliptic is in Draco. Draco is circumpolar star, circumpolar from northern latitudes. There it is never setting and therefore can be seen all year. Features Stars Thuban (α Draconis) was the northern pole star from 3942 BC, when it moved farther north than Theta Boötis, until 1793 BC. The Egyptian Pyramids were designed to have one side facing north, with an entrance passage geometrically aligned so that Thuban would be visible at night. Due to the effects of Axial precession (astronomy), precession, it would again be the pole star around the year AD 21000. It is a blue-white giant star of magnitude 3.7, 309 light-years from Earth. The traditional name of Alpha Draconis, Thuban, means "head of the serpent". T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eta Draconis
Eta Draconis (η Draconis, abbreviated Eta Dra, η Dra) is a binary star in the northern circumpolar constellation of Draco. Despite having an apparent visual magnitude of only +2.73, it is the second-brightest star in this generally faint constellation. Based upon parallax measurements collected during the Hipparcos mission, this star is located at a distance of about from the Sun. The two components are designated Eta Draconis A (also named Athebyne ) and B. Nomenclature ''η Draconis'' ( Latinised to ''Eta Draconis'') is the system's Bayer designation. The designations of the two components as ''Eta Draconis A'' and ''B'' derives from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). Eta Draconis, together with Zeta Draconis, bore the traditional Arabic name الذئبين ''al-dhiʼbayn'', "the (two) wolves", lying in wait for the camel's foal, the little star Al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theta Draconis
Theta Draconis, a name Latinized from θ Draconis, is a binary star system in the northern circumpolar constellation of Draco. It is faintly visible to the naked eye at night with an apparent visual magnitude of 4.12. Parallax measurements place it at an estimated distance of from the Sun, and it is drifting closer with a radial velocity of −8 km/s. It has a relatively high proper motion, traversing the celestial sphere at the rate of per year. O. J. Eggen included this star as a member of the NGC 1901 supercluster based on its space motion. The binary nature of this system was discovered by W. W. Campbell in 1899, and the first set of orbital elements was published by H. D. Curtis in 1907. It is a single-lined spectroscopic binary in a close orbit with a period of 3.07 days and an eccentricity (ovalness) of 0.04. The secondary component has been resolved in the infrared H band, allowing an estimation of the mass ratio as . Some velocity variati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iota Draconis
Iota Draconis (ι Draconis, abbreviated Iota Dra, ι Dra), also named Edasich , is a star in the northern circumpolar constellation of Draco. A visually unremarkable star of apparent magnitude 3.3, in 2002 it was discovered to have a planet orbiting it (designated Iota Draconis b, later named Hypatia). From parallax measurements, this star is located at a distance of about from the Sun. Nomenclature ''ι Draconis'' ( Latinised to ''Iota Draconis'') is the star's Bayer designation. On discovery the planet was designated Iota Draconis b (or Edasich b). It bore the traditional name ''Edasich'', derived from the Arabic ' of Ulug Beg and the Dresden Globe, or 'Male hyena' by Kazwini, with ''Eldsich'' being recorded in the ''Century Cyclopedia''. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a table of the first two batches of n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purple Forbidden Enclosure
The Purple Forbidden enclosure ( Zǐ wēi yuán) is one of the San Yuan ( Sān yuán) or Three Enclosures Traditional Chinese astronomy has a system of dividing the celestial sphere into asterisms or constellations, known as "officials" ( Chinese ''xīng guān''). The Chinese asterisms are generally smaller than the constellations of Hellenistic .... Stars and constellations of this group lie near the north celestial pole and are visible all year from temperate latitudes in the Northern Hemisphere. Asterisms The asterisms are : See also * Twenty-eight mansions References Chinese constellations Chinese astrology {{china-stub ... [...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 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) and flourished from the Han period onward. 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 framework. Joseph Needham has described the ancient Chinese as the most persistent and accurate obser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (planet)
Mercury is the smallest planet in the Solar System and the closest to the Sun. Its orbit around the Sun takes 87.97 Earth days, the shortest of all the Sun's planets. It is named after the Roman god ' ( Mercury), god of commerce, messenger of the gods, and mediator between gods and mortals, corresponding to the Greek god Hermes (). Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or the eastern horizon before sunrise, usually in twilight. At this time, it may appear as a bright star-like object, but is more difficult to observe than Venus. From Earth, the planet telescopically displays the complete range of phases, similar to Venus and the Moon, which recurs over its synodic period of approximately 116 days. The synodic proximity of Mercury to Earth makes Mercury most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Budha
Budha ( sa, बुध) is a Sanskrit word that connotes the planet Mercury. Budha, in Hindu legends, is also a deity. He is also known as Soumya (Sanskrit: सौम्य, lit. ''son of Moon''), Rauhineya and Tunga and is the Nakshatra lord of Ashlesha, Jyeshtha and Revati. Planet Budha as a planet appears in various Hindu astronomical texts in Sanskrit, such as the 5th century ''Aryabhatiya'' by Aryabhatta, the 6th century ''Romaka'' by Latadeva and ''Panca Siddhantika'' by Varahamihira, the 7th century ''Khandakhadyaka'' by Brahmagupta, and the 8th century ''Sisyadhivrddida'' by Lalla. These texts present Budha as one of the planets and estimate the characteristics of the respective planetary motion. Other texts such as ''Surya Siddhanta'' dated to have been complete sometime between the 5th century and 10th century present their chapters on various planets with deity mythologies. The manuscripts of these texts exist in slightly different versions, present B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jupiter
Jupiter is the fifth planet from the Sun and the List of Solar System objects by size, largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but slightly less than one-thousandth the mass of the Sun. Jupiter is the List of brightest natural objects in the sky, third brightest natural object in the Earth's night sky after the Moon and Venus, and it has been observed since Pre-history, prehistoric times. It was named after the Jupiter (mythology), Roman god Jupiter, the king of the gods. Jupiter is primarily composed of hydrogen, but helium constitutes one-quarter of its mass and one-tenth of its volume. It probably has a rocky core of heavier elements, but, like the other giant planets in the Solar System, it lacks a well-defined solid surface. The ongoing contraction of Jupiter's interior generates more heat than it receives from the Sun. Because of its rapid rotation, the planet' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chandra
Chandra ( sa, चन्द्र, Candra, shining' or 'moon), also known as Soma ( sa, सोम), is the Hindu god of the Moon, and is associated with the night, plants and vegetation. He is one of the Navagraha (nine planets of Hinduism) and Dikpala (guardians of the directions). Etymology and other names The word "Chandra" literally means "bright, shining or glittering" and is used for the "Moon" in Sanskrit and other Indian languages.''Graha Sutras'' by Ernst Wilhelm, published by Kala Occult Publishers p. 51 It is also the name of various other figures in Hindu mythology, including an asura and a Suryavanshi king. It is also a common Indian name and surname. Both male and female name variations exists in many South Asian languages that originate from Sanskrit. Some of the synonyms of Chandra include ''Soma'' (distill), ''Indu'' (bright drop), ''Atrisuta'' (son of Atri), ''Shashin'' or ''Shachin'' (marked by hare), ''Taradhipa'' (lord of stars) and ''Nishakara'' (the ni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brhaspati
Brihaspati ( sa, बृहस्पति, ), also known as Guru, is a Hindu deity. In the ancient Vedic scriptures of Hinduism, Brihaspati is a deity associated with fire, and the word also refers to a rishi (sage) who counsels the devas (gods). In some later texts, the word refers to the largest planet of the solar system, Jupiter, and the deity is associated with the planet as a Navagraha. Sage Brihaspati appears in the Rigveda (pre-1000 BCE), such as in the dedications to him in the hymn 50 of Book 4; he is described as a sage born from the first great light, the one who drove away darkness, is bright and pure, and carries a special bow whose string is ''Rta'' or "cosmic order" (basis of dharma). His knowledge and character is revered, and he is considered Guru (teacher) by all the Devas. In the Vedic literature and other ancient texts, sage Brihaspati is also called by other names such as Bramanaspati, Purohita, Angirasa (son of Angiras) and Vyasa; he is sometimes identifie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goddess
A goddess is a female deity. In many known cultures, goddesses are often linked with literal or metaphorical pregnancy or imagined feminine roles associated with how women and girls are perceived or expected to behave. This includes themes of spinning (textiles), spinning, weaving, beauty, love, sexuality, motherhood, domesticity, creativity, and List of fertility deities, fertility (exemplified by the ancient mother goddess cult). Many major goddesses are also associated with magic (supernatural), magic, war, strategy, hunting, farming, wisdom, fate, earth, sky, power (social and political), power, laws, justice, and more. Some themes, such as Discordianism, discord or disease, which are considered negative within their cultural contexts also are found associated with some goddesses. There are as many differently described and understood goddesses as there are male, shapeshifting, or neuter gods. In some faiths, a sacred female figure holds a central place in religious prayer a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Mercury (planet)")
.svg "Click for more on -> Jupiter")
