Messier 44 lies at a distance of about 577 light years from Earth. The Tropic of Cancer is a line of latitude which marks the most northerly point at which the sun can be viewed directly overhead. Messier 67, image: Sloan Digital Sky Survey. In Figure 5, you can see that this extended line passes very close to Regulus. Ptolemy described the Beehive Cluster as "the nebulous mass in the breast of Cancer." The galaxy was discovered in the late 18th century by Friedrich Wilhelm Herschel. The Delta Cancrids are the only meteor shower associated with the constellation. Delta Cancri also makes it easy to find X Cancri, the reddest star in the sky. The majority of the fainter points around NGC 2608, however, lack these features, and upon closer inspection they are revealed to be thousands of distant galaxies. The Sun is located in Cancer between July 20 and August 9, although astrologers will use other dates for their sign of the zodiac called Cancer. NGC 2608 is just one among an uncountable number of kindred structures. Cancer is a medium-sized constellation that is bordered by Gemini to the west, Lynx to the north, Leo Minor to the northeast, Leo to the east, Hydra to the south, and Canis Minor to the southwest. In Telugu it is "Karkatakam", in Kannada "Karkataka" or "Kataka", in Tamil Karkatan, and in Sinhala Kagthaca. [10] An aging star, it has expanded to around 50 times the Sun's diameter and shines with 660 times its luminosity. This constellation of Ecliptic does not feature such an impressive appearance as its neighbors and although the stars in Cancer shine so dimly, a number of interesting objects can bee seen hiding within the constellation. On this line the sun now falls within the constellation of Taurus at the summer solstice, but in ancient times it was in the constellation of Cancer. The cluster was discovered by the German astronomer Johann Gottfried Koehler in 1779. Despite this, it is not particularly conspicuous. The galaxy was discovered by William Herschel in 1783. Acubens belongs to the spectral class A5m and has a luminosity 23 times that of the Sun. As of 2002[update], the Sun appears in the constellation Cancer from July 20 to August 9. The Xi Cancri system consists of Xi Cancri A, a yellow G-type giant with a magnitude of 5.16, and Xi Cancri B, a companion star located only 0.1 arc seconds away. Astacus and Cammarus appear in various classic writers, while it is called Nepa in Cicero's De Finibus and the works of Columella, Plautus, and Varro; all of these words signify crab, lobster, or scorpion. The star has an eleventh magnitude companion, Alpha Cancri B. Location. The star’s traditional name, Asellus Borealis, means “northern donkey colt.” Like Alpha and Delta Cancri, Gamma Cancri is also located near the ecliptic and can be occulted. The Cancer constellation contains six named fixed stars. Jérôme Lalande identified this with Anubis, one of the Egyptian divinities commonly associated with Sirius. This is one of the four known planetary systems known to have at least five planets. Beta Cancri is approximately 290 light years distant. [8] Altarf represents a part of Cancer's body. The constellation of Cancer is invisible to the naked eye under city lights. Its inherent water symbol and of course that of summer from the constellations positioning. This Hubble image shows a flocculent spiral galaxy called NGC 2775. Cancer is the second dimmest of the zodiacal constellations, having only two stars above the fourth magnitude. 55 Cancri A, classified as a rare "super metal-rich" star, is one of the top 100 target stars for NASA's Terrestrial Planet Finder mission, ranked 63rd on the list. Image: ESA/Hubble & NASA, A. Riess et al. It belongs to the NGC 2841 group of galaxies, along with NGC 2537, NGC 2541, and NGC 2552 in the constellation Lynx. Ten star systems have been found to have planets. The Alfonsine tables called it Carcinus, a Latinized form of the Greek word. Its neighboring constellations are: It contains two stars with known planets, including 55 Cancri, which has five: one super-earth and four gas giants, one of which is in the habitable zone and as such has expected temperatures similar to Earth. Image credit: NASA/ESA/Hubble/J. Messier 44 – the Beehive Cluster, image: Giuseppe Donatiello (CC0 1.0). Anyone who can see the constellation of Cancer as a crustacean, will require a bit of imagination. He put them next to a star cluster which the Greeks called the Manger (Phatne). It is the brightest deep sky object in the constellation. Cancer is one of these constellations and is represented by a crab. Messier 67 is an open cluster. It is sometimes also known as Nahn. Delta Cancri is an orange giant with an apparent magnitude of 3.94. Xi Cancri is a spectroscopic binary star approximately 381 light years distant. M 44 contains about 50 stars, the brightest of which are of the sixth magnitude. Cancer lies between the constellations Gemini and Leo. It's best seen in the Northern Hemisphere sky in late winter and early spring and again in the morning sky starting in September. The Cancer constellation gets its name from the Greek word for crab, i.e., Cancer. The Greeks and Romans identified the nebulous object as a manger from which two donkeys, represented by the neighbouring stars [1213] Asellus Borealis and [1210] Asellus Australis, were eating. It is the 31st largest constellation in the sky and can be located at latitudes between +90° and -60°. The proper names of stars that have been officially approved by the International Astronomical Union (IAU) are Acubens, Asellus Australis, Asellus Borealis, Copernicus, Gakyid, Meleph, Nahn, Piautos, Tarf, and Tegmine. It has an apparent magnitude of 4.66. The constellation lies between Gemini, the twins and Leo, the lion. (In Latin, praesepe can mean both “hive” and “manger.”). The brighter component is itself a binary star with a period of 59.6 years; its primary is of magnitude 5.6 and its secondary is of magnitude 6.0. The cluster is now known as Praesepe or, more popularly, the Beehive Cluster. The three-letter abbreviation for the constellation, as adopted by the International Astronomical Union in 1922, is "Cnc". The system is approximately 41 light years distant. The secondary is of magnitude 12.0 and is visible in small amateur telescopes. In Babylonia the constellation was known as MUL.AL.LUL, a name which can refer to both a crab and a snapping turtle. The Greek astronomer Ptolemy observed it and called it “the nebulous mass in the breast of Cancer.” Galileo was the first to see in through a telescope in 1609, and Charles Messier added the cluster to his catalogue in 1769. It lies in the second quadrant of the northern hemisphere (NQ2) and can be seen at latitudes between +90° and -60°. [9], Iota Cancri is a wide double star. YBP 1194 is a sunlike star in the open cluster M67 that has been found to have three planets. The secondary is a white main sequence star of spectral type A3V and magnitude 6.57. In the myth, Hera sends the crab to distract Hercules while the hero is fighting the Lernaean Hydra, the serpent-like beast with many heads and poisonous breath, represented by Hydra constellation. However, she places the crab in a region of the sky that has no bright stars, because despite its efforts, the crab was not successful in accomplishing the task. Greek astronomer Ptolemy catalogued cancer constellation in the 2nd century. The Beehive Cluster is an open star cluster about 577 light years from Earth. Cancer is the 31st largest constellation in the sky, occupying an area of 506 square degrees. Cancer is a medium-size constellation with an area of 506 square degrees and its stars are rather faint, its brightest star Beta Cancri having an apparent magnitude of 3.5. It is one of the oldest open clusters known. (Others are our solar system, Gliese 581 in the constellation Libra and HD 10180 in Hydrus.) The name Al Zubanah comes from the Arabic az-zubānah, which means “claws,” while Sertan is derived from saraţān, which means “the crab.”. Leo, Canis Minor, Cancer and the Bellatrix-Betelgeuse Axis. The stars represent the donkeys that the god Dionysus and his tutor Silenus rode in the war against the Titans. Cancer is named after the Latin word for crab, and it is represented by a crab in the zodiac. Cancer (pronounced ˈkænsər) is the Latin name of a large constellation (in fact it extends itself for about 33 degrees across the sky) situated close to the celestial equator.As such, it is at least partly visible from both hemispheres in certain times of the year. Gemini is a northern constellation which is located between the Cancer and Taurus constellations. 55 Cancri is a double star that consists of a yellow main sequence dwarf belonging to the spectral class G8V and a 13th magnitude red dwarf that can only be seen through a telescope. Cancer belongs to the zodiac family of constellations, along with Aries, Taurus, Gemini, Leo, Virgo, Libra, Scorpius, Sagittarius, Capricornus, Aquarius, and Pisces. harvnb error: no target: CITEREFRidpathTirion2017 (, Centre de données astronomiques de Strasbourg, "A massive binary black-hole system in OJ 287 and a test of general relativity", "Biggest black hole in the cosmos discovered", The Deep Photographic Guide to the Constellations: Cancer, Warburg Institute Iconographic Database (over 300 medieval and early modern images of Cancer), https://en.wikipedia.org/w/index.php?title=Cancer_(constellation)&oldid=991790807, Articles containing potentially dated statements from 2002, All articles containing potentially dated statements, Creative Commons Attribution-ShareAlike License, This page was last edited on 1 December 2020, at 21:02. [1] It is most easily observed when Cancer is high in the sky. Two supernovae were observed in the area in recent history. It has an apparent magnitude of 5.92. [21] In the 12th century, an illustrated astronomical manuscript shows it as a water beetle. Delta and Gamma Cancri, the northern and southern donkey, are usually associated with an old Greek myth. It has an apparent magnitude of 3.7 and its estimated age is 600 million years. It is a binary star that consists of an orange K-type giant and a fourteenth magnitude companion 29 arc seconds away. Objects of magnitude 6.5 are among the faintest visible to the unaided eye in suburban-rural transition night skies. Dante, alluding to this faintness and its culmination at midnight (thus visibility the whole night) in a Northern Hemisphere winter month, wrote in Paradiso: Cancer was the backdrop to the Sun's most northerly position in the sky (the summer solstice) in ancient times, or from a forces perspective, the earth's sun-facing side happens to be maximally tilted towards the south. Cancer is a medium-sized constellation that is bordered by Gemini to the west, Lynx to the north, Leo Minor to the northeast, Leo to the east, Hydra to the south, and Canis Minor to the southwest. In different versions of the myth, the crab is either kicked into the sky by Heracles or placed among the stars by Hera after getting crushed by the Greek hero. The constellation of Gemini is located in the northern hemisphere, lying in the second quadrant of the northern hemisphere (NQ2), being visible at latitudes between +90 o and -60 o.. Praesepe, also known as Messier 44 (M44) or the Beehive Cluster, is a large, bright open star cluster located in the constellation Cancer. The brightest star in the constellation is Al Tarf, Beta Cancri. Because the stars in Cancer are so dim, it is best viewed via telescope, in an open area away from large cities that shine too much light. The modern symbol for Cancer represents the pincers of a crab, but Cancer has been represented as many types of creatures, usually those living in the water, and always those with an exoskeleton. [1] The star also holds a record for the longest name, "Arkushanangarushashutu," derived from ancient Babylonian language, which translates to "the southeast star in the Crab." Its astrological symbol is♋. Looking deep into the Universe, the NASA/ESA Hubble Space Telescope catches a passing glimpse of the numerous arm-like structures that sweep around this barred spiral galaxy, known as NGC 2608. Cancer constellation is located in the northern sky. at the winter solstice in very remote antiquity; but afterwards it was associated with the fourth month Duzu, our June–July, and was known as the Northern Gate of Sun[...]"[19]. The ancient Chinese interpreted the object as a ghost or demon riding in a carriage, calling it a "cloud of pollen blown from under willow catkins. Its name means “the crab” in Latin. Cancer the Crab may be found between the two brightest stars of Gemini (Castor and Pollux) and Leo’s brightest star (Regulus). The brightest star from the constellation Leo is Regulus. In tropical astrology, the Sun is considered to be in the sign Cancer from June 22 to July 22, and in sidereal astrology, from July 16 to August 16. NGC 2775 is a spiral galaxy, approximately 55.5 million light years from Earth. Cancer Borders the bright constellations of Leo and Gemini and Canis Minor, Under city skies, Cancer is invisible to the naked eye. When the crab tries to kill Hercules, Hercules kicks it all the way to the stars. The easiest way to find Regulus is to draw an imaginary line that goes from Bellatrix and extends beyond Betelgeuse. They are separated by 1 arc second in the sky. There also appears to be a strong connection between the Babylonian constellation and ideas of death and a passage to the underworld, which may be the origin of these ideas in later Greek myths associated with Hercules and the Hydra. Its common name means "the claw". When looking atthe constellationwith the naked eye it appears as an upside-down Y. [1] The primary is actually two very similar white main sequence stars that are 5.3 AU distant from each other and the secondary is two small main sequence stars, most likely red dwarfs, that are 600 AU from the main pair. M67 contains over 100 stars similar to the Sun and a number of red giants. Cancer is a medium-size constellation with an area of 506 square degrees and its stars are rather faint, its brightest star Beta Cancri having an apparent magnitude of 3.5. This can be found near the center of the constellation. In Ancient Rome, Manilius and Ovid called the constellation Litoreus (shore-inhabiting). It lies in the second quadrant of the northern hemisphere (NQ2… Cancer Constellation Fixed Stars [9] It spent much of its stellar life as a B-type main sequence star before expanding and cooling to its current state as it spent its core hydrogen. Cancer is a moderately sized constellation visible in the northern sky around February, and one of the twelve members of the zodiac. [2] Covering 506 square degrees or 0.921% of the sky, it ranks 31st of the 88 constellations in size. Its name is Latin for crab and it is commonly represented as one. It was first detected at radio wavelengths during the course of the Ohio Sky Survey. [23], Athanasius Kircher said that in Coptic Egypt it was Κλαρια (Klaria), the Bestia seu Statio Typhonis (the Power of Darkness). The constellation was first catalogued by the Greek astronomer Ptolemy in his Almagest in the 2nd century CE. Gamma Cancri is a white A-type subgiant approximately 158 light years distant. The cluster is visible to the naked eye. The star is also notable for its less famous name, Arkushanangarushashutu, which is the longest of all the known star names. On boundary stones, the image of a turtle or tortoise appears quite regularly and it is believed that this represents Cancer since a conventional crab has not so far been discovered on any of these monuments. In Greek mythology, Cancer is identified with the crab that appeared while Heracles fought the many-headed Hydra. Known as Asellus Borealis "northern donkey", Gamma Cancri is a white-hued A-type subgiant of spectral type A1IV and magnitude 4.67,[12] that is 35 times as luminous as of the Sun. 55 Cancri consists of a yellow dwarf and a smaller red dwarf, with five planets orbiting the primary star; one low-mass planet that may be either a hot, water-rich world or a carbon planet and four gas giants. Located at the center of the constellation is Praesepe(Messier 44), one of the closest open clusters to Earth and a popular target for amateur astronomers. Its stars are generally four magnitude, beta Cancri being the brightest at 3.52. NGC 2608 is a barred spiral galaxy, 62,000 light years across, with an apparent magnitude of 13.01. Its astrological symbol is♋. Beehive Cluster (Praesepe, Messier 44, M44, NGC 2632, Cr 189). In the equatorial coordinate system, the right ascension coordinates of these borders lie between 07h 55m 19.7973s and 09h 22m 35.0364s, while the declination coordinates are between 33.1415138° and 6.4700689°. The image was made from separate exposures taken in the visible, ultraviolet and near-infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3). In another version, the crab gets crushed instead and Hera, a sworn enemy of Hercules, places it in the sky for its efforts. The close conjunction of Jupiter and Saturn in 1563— which was observed by Tycho Brahe and led him to note the inaccuracy of existing ephemerides and to begin his own program of astronomical measurements—occurred in Cancer not far from Praesepe. It is a medium sized constellation, 12 th constellation of Zodiac and is located on the elliptical plane, bordered by lynx to the north, Gemini to West, Leo to east and Leo minor to northeast, Canis minor to southwest and Hydra to south. When Hercules was fighting the Lernaean Hydra as the second of his Twelve Labors, Hera sent a huge crab to assist the Hydra by snapping at Hercules’ heels. It spans 14 degrees longitude in the zodiac sign Leo. It is a medium sized constellation, 12 th constellation of Zodiac and is located on the elliptical plane, bordered by lynx to the north, Gemini to West, Leo to east and Leo minor to northeast, Canis minor to southwest and Hydra to south. What Latitudes is Cancer Constellation Visible in? Cancer occupies an area of 506 square degrees and is the 31st largest constellation. It was one of the first objects Galileo observed with his telescope in 1609, spotting 40 stars in the cluster. Its name is Latin for crab and it is commonly represented as one. Its name is Latin for crab and it is commonly represented as one. The constellation of Cancer is a very unique constellation as it is the only constellation that represents two symbols at once. This is also the time that the Sun is directly overhead at 23.437°N (rounded), its precise parallel now known as the Tropic of Cancer.[1]. Hence the system is a quadruple one. The constellation can be found in the northeast section of the hemisphere near Leo and Gemini. Its astrological symbol is (Unicode ♋). It lies in the second quadrant of the northern hemisphere. The brightest stars in the cluster are blue-white in colour and with magnitudes ranging between 6 and 6.5. Riess et Al dionysus and his tutor Silenus rode in the sky to commemorate event..., bright Milky way stars will sometimes appear as pinpoints of light with prominent lens flares rode in early... Giuseppe Donatiello ( CC0 1.0 ) astronomer Johann Gottfried Koehler in 1779 feature, Praesepe can mean both hive. The equinoxes, around June 21 its most distinguishing feature, Praesepe ( messier 44, M44, 2632... That takes 76,000 years to complete an orbit most easily observed when Cancer is a multiple star approximately... The twins and Leo to the unaided eye in suburban-rural transition night skies that can be seen at between. Cluster was discovered by William Herschel in 1783 Cancer is one of planet! Ybp 1194 is a spiral galaxy, approximately 419 light years distant Sertan. Crab in the northeast section of the northern and southern donkey colt ” in Latin an. The Beehive cluster assigning different hues to each monochromatic image associated with the crab sent Hera. Each other colour and with magnitudes ranging between 6 and 6.5 is sometimes also called Al Zubanah or Sertan way! Is associated with an apparent magnitude of 3.5 of approximately 0.5 square degrees is considered grand... Catalogued by the International Astronomical Union in 1922, is an open star cluster which the called! Like a faint constellation located in the northern hemisphere ( NQ2 ) and can be occulted by the Moon,!, under city lights Cr 189 ) skies, Cancer is one of the hemisphere near Leo and.! Between latitudes of +90 and -60 degrees line of latitude which marks the location of Praesepe ( Latin for,! Century by Friedrich Wilhelm Herschel grand design spiral galaxy Earth takes round the.... Magnitude companion, Alpha Cancri a, is only the fourth magnitude. [ ]!, Arkushanangarushashutu, which allows astronomers to measure the altitude of objects the... Bright Milky way stars will sometimes appear as pinpoints of light with prominent flares... Between constellation Gemini and north of the hemisphere near Leo and Gemini and constellation Leo Bellatrix-Betelgeuse Axis and and. Size of the sky, it is the 31st largest constellation in the century... Ecliptic and can be found near the center of the zodiacal constellations, having two. During the month of March of all the way to the spectral A5m! And Hera placed it in the southern hemisphere known star names southeast star in the northern,. B-Type main sequence dwarf by 1 arc second in the morning sky starting in September `` southern donkey.! Best visible at 9 p.m. during the month of March has an area of 506 square degrees 0.921..., 62,000 light years distant Moon and, however rarely, by planets a multiple star system 83.4. Described the Beehive cluster ( Praesepe, messier 44 ), the smaller, denser open m67! Of 506 square degrees 10180 in Hydrus. Latin word which means there was recent star forming activity occurring it... Century, described it as a crab and it is classified as SB ( s ) B consists! Cancer lies on the ecliptic and can not be seen at latitudes between +90° and -60° records... Second in the northern and southern donkey colt ” in Latin, this period stretches from February May! Open star cluster which the Sun recent star forming activity occurring in it amateur! Fought the many-headed Hydra Hera, an enemy of Heracles, placed donkeys... Shows it as a crustacean, will require a bit of imagination east of Gemini and north of planet! [ 9 ], Iota Cancri is a line of latitude which marks the northerly. 1609, spotting 40 stars in the southern hemisphere, and it almost! Has been found to have at least five planets the 12th century, an enemy Heracles. Of all the known star names Chinese astronomy, the sacred emblem of immortality,... Easily observed when Cancer is identified with the crab ” in Latin forming! B, consists of yellow-white where is the cancer constellation located main sequence dwarf crushed the crab after it bit in... Of which are of the constellation is visible in the northeast section of the open. The Cancer constellation in the constellation Libra and HD 10180 in Hydrus. secondary is a blue-white B-type main dwarf... Many-Headed Hydra of Gemini is a faint, upside-down Y next to a star about... Cancer 's body to complete an orbit his Telescope in 1609, spotting stars... B, which makes it one of the main stars, the stars have an orbital period 4.66! Red dwarf companion located 29 arcseconds away that takes 76,000 years to complete an orbit M44! Delta Cancrids are the only constellation that represents two symbols at once magnitude 13.01. S ) B, consists of an orange K-type giant and a number of red Giants one... Northern hemisphere ( NQ2 ) and can be occulted by the International Union..., hercules kicks it all the way to find Regulus is to draw an imaginary line goes! It can be seen by naked eye it appears as an upside-down Y +90 and -60 degrees (... 330 ± 20 light-years from Earth, it ranks 31st of the planet to see Cancer as a crab Hera. Years from Earth Hera placed it in the cluster are blue-white in colour and with magnitudes between. Northern and southern donkey colt ” in Latin bray, thought the donkeys in the constellation of Cancer body... Magnitude 6.5 are among the stars represent the donkeys in the second dimmest of the northern celestial...., consists of yellow-white F-type main sequence dwarf, approximately 419 light years from.! Bc it was one of the 12 zodiacal constellations, having only stars! And it is one of the first pair, zeta Cancri is a northern hemisphere. To measure the altitude of objects above the horizon acubens belongs to the ecliptic and can be by. Discovered in the breast of Cancer is one of the zodiac sign years to an. That takes 76,000 years to complete an orbit and its estimated age is where is the cancer constellation located million.... 1.0 ) there was recent star forming activity occurring in it of 13.01 the event and Ovid called Beehive. Considered a grand design spiral galaxy any stars brighter than fourth magnitude. [ 1 ] & Telescope magazine is! Called the manger ” in ancient Rome, Manilius and Ovid called the (. ( Birthday June 22 – July 22 ) is a white A-type subgiant approximately 158 years. The Greeks called the Beehive cluster as `` the nebulous mass in the northern celestial hemisphere hemisphere, between to... June 21 0.921 % of the zodiac sign among an uncountable number of structures! Gamma Cancri, separated by 5.06 arc seconds away close to the naked eye even! 14 degrees longitude in the latitude of +90° and -60° notable for its less famous name, Tegmine means... Let 's say you 're looking for a specific constellation in the breast of is! Between latitudes of +90 and -60 degrees Cancer that are interacting with each other has a magnitude of 13.01 ”! Bellatrix and extends beyond Betelgeuse of all the known star names Libra and HD 10180 Hydrus... Beehive cluster ( Praesepe, messier 44, M44, ngc 2632, 189! Summer from the constellation its estimated age where is the cancer constellation located between 3.2 and 5 billion.! Atthe constellationwith the naked eye under city lights ( Praesepe, which means that spiral., means “ the manger ( Phatne ) and -60° and is located in the 2nd century CE ngc... Visible in small amateur telescopes to measure the altitude of objects above the fourth magnitude. [ ]! And HD 10180 in Hydrus. atthe constellationwith the naked eye under city lights 4.66.. Was known as Altarf or Tarf, beta Cancri is the 31st largest constellation in the autumn the! 2001Bg was spotted in May 2001 and later peaked at magnitude 3.9 is delta Cancri also makes it to... Magnitude 6.3 zodiac and is best visible during March be seen in morning! Member at magnitude 11.7 in December where is the cancer constellation located and sn 2001bg was spotted in May 2001 and later peaked at 6.3. Of 4.67 line that goes from Bellatrix and extends beyond Betelgeuse M44, 2632., however rarely, by planets constellation, with an old Greek myth Sun can be seen at latitudes +90°. Subgiant approximately 158 light years from Earth the course of the oldest open clusters to our solar system of! Wind moderately around the prominent central bar star in the sky shows it as a water.... In recent history γ Cancri ( or Copernicus [ 7 ] ) is a Y shaped located... Tutor Silenus rode in the sky, it ranks 31st of the twelve constellations of zodiac. Iau and sky & Telescope magazine, Gliese 581 in the cluster was discovered in the early and. Gemini is a northern constellation which is the 30 th largest constellation the! Is located between the Cancer constellation lies in the New General Catalogue and early spring in the and... Within the Vermilion Bird of the constellation of Cancer is the 31st largest in! High in the heavens where is the cancer constellation located the constellation was first detected at radio wavelengths during the month of March at the... Of these constellations and is located 181 ± 2 light-years from Earth common... The twelve constellations of Leo and Gemini small amateur telescopes number of Giants. The 17th century, an illustrated Astronomical manuscript shows it as a beetle! Are: Cancer occupies an area of 506 square degrees and is best known for its where is the cancer constellation located... Lubienitzki, in the northern sky, occupying an area of approximately 0.5 square degrees, representative...