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Topic: Asterism (astronomy)


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In the News (Tue 1 Dec 09)

  
  * Asterism - (Astronomy): Definition
Asterisms are sub- or supersets of constellations which build a constellation itself, or a group of stars, physically related or not.
It is a small asterism, containing only about five stars, viz., one of the 1st magnitude, two of the 2nd, one of the 3rd, and one of the 4th.
The prominent Y-shaped asterism called the "Water Jar" (or "Urn") of Aquarius, the Water Bearer, is in the middle of the picture and is made of a "Y" of stars with Zeta Aquarii) at the center.
en.mimi.hu /astronomy/asterism.html   (718 words)

  
 Encyclopedia :: encyclopedia : Asterism (astronomy)   (Site not responding. Last check: 2007-10-13)
In astronomy, an asterism is a recognized pattern of stars seen in Earth's sky which is neither an official constellation nor a true star cluster.
Asterisms are considered to be distinct from constellations, although the origin of most constellations is also a recognizable pattern of stars.
An asterism might be a part of a constellation, a pattern composed of stars from two or more constellations, or a smaller distinctive pattern of stars which are not physically associated and are therefore not classified as a cluster.
www.hallencyclopedia.com /topic/Asterism_(astronomy).html   (136 words)

  
 Asterism (astronomy) - Wikipedia, the free encyclopedia
In astronomy, an asterism is a pattern of stars seen in Earth's sky which is not an official constellation.
An asterism may also be a section of a constellation that refers to the traditional figuring of the whole.
Among the best-known and closest are the Pleiades (M45) and the Hyades in Taurus and the Beehive (M44) in Cancer.
en.wikipedia.org /wiki/Asterism_(astronomy)   (1975 words)

  
 Zoom Astronomy Glossary: A
Astronomy is the scientific study of space, including the planets, stars, galaxies, comets, and nebulae.
Astrophysics is a branch of astronomy that studies the physical properties of celestial bodies and other matter and energy in space.
If the astronomy term you are looking for is not in the dictionary, please e-mail us.
www.enchantedlearning.com /subjects/astronomy/glossary   (4918 words)

  
 Astronomy 101/102: Telescope Lab: Tour of the Sky
In the middle of this rectangle is a striking asterism of 3 stars, aligned, regularly spaced, and of similar brightness.
Leo: The rising of Leo (the lion) in the Eastern sky signals the arrival of spring in the northern hemisphere.
It is also known as the Northern Cross asterism due to the fact that the central part of the contellation looks like a cross.
www.vanderbilt.edu /AnS/physics/astrocourses/AST101/labs/tl_tour.html   (1907 words)

  
 Markov 1 Asterism in Hercules   (Site not responding. Last check: 2007-10-13)
He also noted that there does not seem to be a pattern for the V and B magnitudes, and because this grouping is quite far away from the plane of the Milky Way, the possibility of it being a physical cluster are reduced.
Archinal suggested the asterism be named “Markov 1” or “Markov J1757.2+2929”, as per the International Astronomical Union’s nomenclature guide lines, and also expressed an interest in including Markov 1 in an upcoming book he is co-authoring (with Steve Hynes of the U.K.) called “Star Clusters”.
The asterism, which is just 0.25-degrees north-west of Xi (92) Hercules, a magnitude 3.7 star, shows ups well on both the Digitized Sky Survey image (Figure 1) and Uranometria 2000.0 (star chart 116) and can be observed during most of the year, except Winter.
www.astrobuysell.com /paul/markov1.htm   (535 words)

  
 Starry Night Store: The World's Most Realistic Astronomy Products
Astronomy: The scientific study of matter in outer space, especially the positions, dimensions, distribution, motion, composition, energy, and evolution of celestial bodies and phenomena.
In astronomy, he discovered Titan (Saturn’s largest moon) and was the first to correctly identify the observed elongation of Saturn as the presence of Saturn’s rings.
Resolution, spatial: In astronomy, the ability of a telescope to differentiate between two objects in the sky that are separated by a small angular distance.
www.starrynight.com /starrynight_dictionary.html   (8903 words)

  
 Star chains in the southern skies (Magda Streicher)   (Site not responding. Last check: 2007-10-13)
There is even a fifth "epsilon" star, although in the asterism it is located between Beta and Gamma, instead of between Alpha and Beta as in the real Crux.
The asterism lies just under two degrees south of NGC 2516, the naked-eye open cluster at the foot of the False Cross.
In Antlia, at RA 10:13:50, Dec –40:19:30, almost on the border with Vela, lies an asterism consisting of "six stars in a tight grouping, very outstanding against the star field, with the brighter two stars" at 5.8 mag.
www.saao.ac.za /assa/html/star_chains_in_the_southern_sk.html   (313 words)

  
 Asterism | English | Dictionary & Translation by Babylon
Asterism Constellations in general, but more specifically applied to the divisions in the zodiac, which in ancient thought were believed to hold special significance.
Also applied to the lunar mansions or divisions of the ecliptic, each being 13 1/2 degrees or 1/27 of 360 degrees, representing approximately the average daily progress of the moon in ecliptic longitude.
The original number of lunar asterisms is said to have been 27, but another was added, represented on the lunar zodiac by a smaller division.
www.babylon.com /definition/Asterism/English   (256 words)

  
 Astronomy Dictionary Page
Asterism-A grouping of stars smaller than a constellation.
Astronomy-The study of the position and movements of celestial objects in space.
This Astronomy Dictionary Page should give you a basic understanding of some of the common Astronomy terms people use.
www.astronomy-for-kids-online.com /astronomydictionary.html   (687 words)

  
 SAC Downloads
The Asterisms data that accompanies this document contain information on all the asterisms that are known.
Asterisms are fun groupings of stars that do not constitute an entire constellation, as a matter of fact some of these objects are on the border between multiple constellations.
There are enough asterisms here to keep an observer busy for a while, but if you know of more, please email me and I can add them to the list.
www.saguaroastro.org /content/downloads.htm   (1529 words)

  
 Astronomy, Draco The Dragon
Our present-day figure originated in Mesopotamia as a winged dragon, larger than the modern asterism, coiling toward the head of Ursa Major: However; the Greek philosopher Thales (6th century BCE) lopped off its wings to form Ursa Minor, and Draco has been wingless every since.
Ursa Major is the third largest constellation, but its figure pales in comparison to the famous asterism of seven stars that form the rump and tail of the bear, known as the Big Dipper or the Plough.
Its most remarkable feature is its head, a tight lozenge-shaped asterism of four stars, including Rastaban (yellowish) and Eltanin (orange), both with magnitudes a bit more than 2.
www.harvestfields.netfirms.com /astrology-zodiac/astronomy/draco-the-dragon.htm   (588 words)

  
 Deepsky Streicher Algarve   (Site not responding. Last check: 2007-10-13)
For a long time one of my great passions in astronomy has been to locate, view, study and enjoy small open clusters containing less than 25 or so stars.
The astronomy camp is situated in the lovely countryside of the Caldas de Monchique.
The stars to the south of this asterism end with a very faint galaxy (PGC 49199) that I could not locate.
www.saao.ac.za /assa/html/deepsky_streicher_algarve.html   (932 words)

  
 Astronomy - Meteors and meteor showers - Francis Reddy
The science of meteor astronomy began in 1833, when a storm of 60,000 meteors an hour shocked the world.
By the 1860s, it had become clear that many meteor showers were annual — including the normally placid Leonids, which produced the big storm — and that they were somehow related to comets.
The radiant is located near the Y-shaped asterism in Aquarius and named for one of those stars.
www.astronomy.com /asy/default.aspx?c=ss&id=77   (2249 words)

  
 Chinese constellation - Wikipedia, the free encyclopedia
The Twenty-eight Mansions occupy the zodiac region of the sky.
Contrary to the Western Astronomy, the Twenty-eight Mansions reflect the movement of the Moon in a lunar month rather than the Sun in a Solar Year.
The numbering of the stars in a asterism, however, is not based on the apparent magnitude of this star as in Bayern designation, but rather its position in the asterism.
en.wikipedia.org /wiki/Chinese_constellation   (622 words)

  
 Category Astronomy - the free encyclopedia   (Site not responding. Last check: 2007-10-13)
Astronomy is a science involving the observation and explanation of events occurring outsideEarth and its atmosphere.
It studies the origins, evolution, physical and chemical properties of objects that can be observedin the sky (and are outside the earth), as well as the processes involving them.
For more information, see the main article about Astronomy.
www.free-web-encyclopedia.com /default.asp?t=Category:Astronomy   (54 words)

  
 Steve and The Journey of the Bloodline
In cellular biology, Aster is a star-shaped structure formed in the cytoplasm of a cell having fibers like rays that surround the centrosome during mitosis.
Asterism (Astronomy) -- In astronomy, an asterism is a pattern of stars seen in Earth's sky which is not an official constellation.
The grouping of stars into constellations is essentially arbitrary, and different cultures have had different constellations, although a few of the more obvious ones tend to recur frequently, e.g., Orion and Scorpius.
www.crystalinks.com /steverv.html   (790 words)

  
 Astronomy Education Resources Resources
Astronomy is separated into 3 traditional fields: astrometry and celestial mechanics are considered classical astronomical branches; astrophysics is the modern branch.
Astronomy 45, "Introduction to Astrophysics" is taught at Harvard to science majors (not necessarily astronomy) who have taken 1 year of college physics.
The Monterey Institute for Research in Astronomy is a non-profit astronomical observatory, founded in 1972 and dedicated to research and education in astronomy.
cdsweb.u-strasbg.fr /astroweb/education.html   (8275 words)

  
 White Bear Medicine Woman - Crystalinks
The seven brightest stars of Ursa Major form a famous asterism known in the United Kingdom as the Plough, and was formerly called by the old name Charles's Wain ("wain" meaning "wagon") as it still is in Scandinavia, Karlavagnen.
In North America it is commonly known as the Big Dipper, because the major stars can be seen to follow the rough outline of a large ladle, or dipper; this is recognized as a grouping of stars in many cultures throughout the eras.
Examples of Asterisms Aster - in reference to a planet, or to a particular configuration of planets or a conjunction of planets and stars - might be implicit in Matthew's description of the Star (aster) of Bethlehem which, if it was not an angelic or supernatural phenomenon, need not have been a single star.
www.crystalinks.com /whbearmedwoman.html   (1912 words)

  
 ThinkQuest : Library : Astronomy
The educational objectives of "Astronomy for Kids" are to teach kids in grades 4 through 6 about astronomy and outer space in a fun and interesting manner.
Astronomy, from the past to the present is covered at this excellent web site.
Astronomy is the study of the stars, planets, and other objects in space.
www.thinkquest.org /library/cat_show.html?cat_id=40   (4067 words)

  
 Astronomy and Earth Science: Following the Drinking Gourd   (Site not responding. Last check: 2007-10-13)
This is perhaps the best time of the year to go out and view one of the best known star patterns in the sky, the Big Dipper.
An asterism is a group of stars that make a pattern on their own, but are actually part of a constellation.
You could say that an asterism is to a constellation as a neighborhood is to the city it is in.
home.ccil.org /~kmiles/dln/2-96/drinking.html   (589 words)

  
 Pagan Astronomy Network - The Dipper   (Site not responding. Last check: 2007-10-13)
More then just a constellation, the asterism played a serious role in the distant past, performing as a night time "sky clock", a navigational system, and as a religious icon.
It has been suggested that the "Ursa" comes from "versus", suggesting the movement of the asterism turning around the pole.
Although the Greeks were familiar with the symbolic seven stars, calling them the 7 Wise Men of Greece, the association with a cosmic bear was present to a much stronger degree.
paganastronomy.net /pole.htm   (1013 words)

  
 Asterisms
It is an open star cluster, which is also called Praesepe or M44 and faintly visible to the naked eye.
Actually this is not a true asterism, but a dark patch on the Milky Way, in the constellation Crux.
This asterism is also known as The Teapot.
www.seds.org /Maps/Const/asterism.html   (594 words)

  
 Category:Astronomy - Definition, explanation
Astronomy is a science involving the observation and explanation of events occurringoutside Earth and its atmosphere.
All about infrared astronomy from NASA's infrared astronomy center: Discovery of infrared, what is infrared and infrared astronomy, history, the infrared universe, gallery, activities, discoveries, missions and a lot of links to IR astronomy sites.
Includes astronomy and space news, sky events, reprinted articles for the magazine, and astronomy and telescope resources.
lexikon.calsky.com /en/txt/cat/astronomy.php   (398 words)

  
 Astronomical Lexicon
An Astronomical Unit is approximately equal to 93,000,000 miles or the mean distance from the sun to the earth.
NASA's Deep Space Network - or DSN - is an international network of antennas that supports interplanetary spacecraft missions and radio and radar astronomy observations for the exploration of the solar system and the universe.
The celestial equivalent of longitude, measured eastward from the spring or vernal equinox.
bfa3.home.att.net /astrolex.html   (1945 words)

  
 [No title]
Astronomy's Star Dome is freely available for everyone.
Astronomy magazine subscribers and newsstand buyers, however, can take things up a notch by viewing constellations and zooming in on more than 800 individual objects.
This allows you to use the software as your custom sky mapping program to plan your observing sessions.
stardome.astronomy.com /stardome/objects.aspx?view=list   (51 words)

  
 Astronomy - The starry sky - Richard Talcott
Astronomy - The starry sky - Richard Talcott
COSMOS, a spectacular, image-rich, 100-page special from the editors of Astronomy magazine, presents the greatest results from the world of cosmology over the past two years.
COSMOS examines a wide array of cutting-edge topics — how the universe turned on; why Einstein's relativity governs the cosmos; is string theory here to stay?; how the first stars formed; do other universes exist?; and much more.
www.astronomy.com /asy/default.aspx?c=ss&id=7   (1997 words)

  
 Astronomy For Everyone
Among the many ideas he instilled in me was the fact that the sky is up there for everyone to enjoy; one doesn't need expensive equipment, or a lot of formal education in science and astronomy, to appreciate the splendors of the night sky.
Anecdotes - This is a collection of stories, many of them full of mishaps, about trips I've taken in search of the perfect eclipse spot, the best dark skies, or just plain having fun with some of the best people in the world - fellow amateur astronomers.
Although they are written primarily for those with an interest, and some background, in astronomy, I've tried to keep the technical terms to a minimum so that they can be enjoyed by the general public, regardless of level of interest.
sciastro.net /portia   (424 words)

  
 Req for Assistance #0001 - Bad Astronomy and Universe Today Forum   (Site not responding. Last check: 2007-10-13)
I heard an astronomy lecture a while back that a new field in astronomy was the field of internet astronomy.
"Asterism." =D> I understand (conceptually) that everything within a constellation's border is considered a part of the constellation, but it "feels" wrong.
Ex: Zeta Andromedae is located within Andromeda's borders, but is not a part of the asterism (in my reference diagram, anyway), therefore it feels improper to insist that Zeta is a part of of the constellation itself.
www.bautforum.com /showthread.php?t=6830   (1816 words)

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