Dorado () is a
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 origins of the e ...
in the southern sky. It was named in the late 16th century and is now one of the
88 modern constellations. Its name refers to the
dolphinfish
''Coryphaena'' is a genus of marine ray-finned fishes known as the dolphinfishes, and is currently the only known genus in the family Coryphaenidae. The generic name is from Greek κορυφή (''koryphē'', "crown, top") and -αινα (-''aina' ...
(''Coryphaena hippurus''), which is known as ''dorado'' in
Spanish
Spanish might refer to:
* Items from or related to Spain:
**Spaniards are a nation and ethnic group indigenous to Spain
**Spanish language, spoken in Spain and many Latin American countries
**Spanish cuisine
Other places
* Spanish, Ontario, Can ...
, although it has also been depicted as a
swordfish
Swordfish (''Xiphias gladius''), also known as broadbills in some countries, are large, highly migratory predatory fish characterized by a long, flat, pointed bill. They are a popular sport fish of the billfish category, though elusive. Swordfis ...
. Dorado contains most of the
Large Magellanic Cloud
The Large Magellanic Cloud (LMC), or Nubecula Major, is a satellite galaxy of the Milky Way. At a distance of around 50 kiloparsecs (≈160,000 light-years), the LMC is the second- or third-closest galaxy to the Milky Way, after the ...
, the remainder being in the constellation
Mensa. The South
Ecliptic pole
An orbital pole is either point at the ends of an imaginary line segment that runs through the center of an orbit (of a revolving body like a planet, moon or satellite) and is perpendicular to the orbital plane. Projected onto the celestial sphe ...
also lies within this constellation.
Even though the name Dorado is not
Latin
Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...
but Spanish, astronomers give it the Latin
genitive
In grammar, the genitive case (abbreviated ) is the grammatical case that marks a word, usually a noun, as modifying another word, also usually a noun—thus indicating an attributive relationship of one noun to the other noun. A genitive can al ...
form ''Doradus'' when naming its stars; it is treated (like the adjacent asterism
Argo Navis
Argo Navis (the Ship Argo), or simply Argo, is one of the 48 Ptolemy's constellations, now a grouping of three IAU constellations. It is formerly a single large constellation in the southern sky. The genitive is "Argus Navis", abbreviated "Arg". ...
) as a feminine proper name of Greek origin ending in -ō (like ''Io'' or ''Callisto'' or ''Argo''), which have a genitive ending ''-ūs''.
History
Dorado was one of twelve constellations named by
Petrus Plancius
Petrus Plancius (; 1552 – 15 May 1622) was a Dutch-Flemish astronomer, cartographer and clergyman. He was born as Pieter Platevoet in Dranouter, now in Heuvelland, West Flanders. He studied theology in Germany and England. At the age of 24 he ...
from the observations of
Pieter Dirkszoon Keyser
Pieter Dirkszoon Keyser (occasionally Petrus Theodorus; – 11 September 1596) was a Dutch navigator and celestial cartographer who mapped several constellations on the southern celestial hemisphere.
Voyages and star observation
Little is ...
and
Frederick de Houtman
Frederick de Houtman ( – 21 October 1627) was a Dutch explorer, navigator, and colonial governor who sailed on the first Dutch expedition to the East Indies from 1595 until 1597, during which time he made observations of the southern ce ...
. It appeared:
* On a celestial globe published in 1597 (or 1598) in Amsterdam by Plancius with
Jodocus Hondius
Jodocus Hondius (Latinized version of his Dutch language, Dutch name: ''Joost de Hondt'') (17 October 1563 – 12 February 1612) was a Flemish people, Flemish and Dutch engraving, engraver and cartographer. He is sometimes called Jodocus Hon ...
.
* First depiction in a celestial atlas, in
Johann Bayer
Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer). He was born in Rain, Lower Bavaria, in 1572. At twenty, in 1592 he began his study of philosophy and law at the University of Ingolstadt, a ...
's ''
Uranometria
''Uranometria'' is a star atlas produced by Johann Bayer. It was published in Augsburg in 1603 by Christoph Mangle (''Christophorus Mangus'') under the full title ''Uranometria: omnium asterismorum continens schemata, nova methodo delineata, a ...
'' of 1603.
* In
Johannes Kepler
Johannes Kepler (; ; 27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws ...
's edition of
Tycho Brahe
Tycho Brahe ( ; born Tyge Ottesen Brahe; generally called Tycho (14 December 154624 October 1601) was a Danish astronomer, known for his comprehensive astronomical observations, generally considered to be the most accurate of his time. He was k ...
's star list in the ''
Rudolphine Tables
The ''Rudolphine Tables'' ( la, Tabulae Rudolphinae) consist of a star catalogue and planetary tables published by Johannes Kepler in 1627, using observational data collected by Tycho Brahe (1546–1601). The tables are named in memory of Rudolf ...
'' of 1627; this was the first time that it was given the alternative name Xiphias, the
swordfish
Swordfish (''Xiphias gladius''), also known as broadbills in some countries, are large, highly migratory predatory fish characterized by a long, flat, pointed bill. They are a popular sport fish of the billfish category, though elusive. Swordfis ...
. The name Dorado ultimately became dominant and was adopted by the IAU.
Dorado represents a
dolphinfish
''Coryphaena'' is a genus of marine ray-finned fishes known as the dolphinfishes, and is currently the only known genus in the family Coryphaenidae. The generic name is from Greek κορυφή (''koryphē'', "crown, top") and -αινα (-''aina' ...
; it has also been called the goldfish because Dorado are gold-colored.
In early 2020,
TOI 700 d
TOI 700 d is a near-Earth-sized exoplanet, likely rocky, orbiting within the habitable zone of the red dwarf TOI 700, the outermost planet within the system. It is located roughly away from Earth in the constellation of Dorado. The exoplanet is ...
, the first
Earth-sized exoplanet was discovered in Dorado by astronomers of the
Transiting Exoplanet Survey Satellite
Transiting Exoplanet Survey Satellite (TESS, Explorer 95 or MIDEX-7) is a space telescope for NASA's Explorer program, designed to search for exoplanets using the transit method in an area 400 times larger than that covered by the ''Kepler ...
.
Features
Stars
Alpha Doradus
Alpha Doradus, Latinized from α Doradus, is the brightest star in the southern constellation of Dorado. The distance to this system, as measured using the parallax method, is about .
This is a binary star system with an o ...
is a blue-white star of magnitude 3.3, 176 light-years from Earth. It is the brightest star in Dorado.
Beta Doradus
Beta Doradus, Latinized from β Doradus, is the second brightest star in the southern constellation of Dorado. It has a variable apparent visual magnitude, and is visible to the naked eye from the southern hemisphere. Based upon parallax ...
is a notably bright
Cepheid variable
A Cepheid variable () is a type of star that pulsates radially, varying in both diameter and temperature and producing changes in brightness with a well-defined stable period and amplitude.
A strong direct relationship between a Cepheid varia ...
star. It is a yellow-tinged supergiant star that has a minimum magnitude of 4.1 and a maximum magnitude of 3.5. One thousand and forty light-years from Earth, Beta Doradus has a period of 9 days and 20 hours.
R Doradus
R Doradus (HD 29712 or P Doradus) is a red giant variable star in the far-southern constellation Dorado. Its distance from Earth is . Having a uniform disk diameter of , it is thought to be the extrasolar star with the largest apparent ...
is one of the many
variable star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes with time. This variation may be caused by a change in emitted light or by something partly blocking the light, so variable stars are classified as ...
s in Dorado.
S Dor, 9.721
hypergiant
A hypergiant (luminosity class 0 or Ia+) is a very rare type of star that has an extremely high luminosity, mass, size and mass loss because of its extreme stellar winds. The term ''hypergiant'' is defined as luminosity class 0 (zero) in the MK ...
in the
Large Magellanic Cloud
The Large Magellanic Cloud (LMC), or Nubecula Major, is a satellite galaxy of the Milky Way. At a distance of around 50 kiloparsecs (≈160,000 light-years), the LMC is the second- or third-closest galaxy to the Milky Way, after the ...
, is the prototype of
S Doradus variable stars. The variable star
R Doradus
R Doradus (HD 29712 or P Doradus) is a red giant variable star in the far-southern constellation Dorado. Its distance from Earth is . Having a uniform disk diameter of , it is thought to be the extrasolar star with the largest apparent ...
5.73 has the largest-known apparent size of any star other than the Sun.
Gamma Doradus
Gamma Doradus, Latinized from γ Doradus, is the third-brightest star in the southern constellation of Dorado. It is faintly visible to the naked eye with an apparent visual magnitude of approximately 4.25, and is a variable st ...
is the prototype of the
Gamma Doradus variable
Gamma Doradus variables are variable stars which display variations in luminosity due to non-radial pulsations of their surface. The stars are typically young, early F or late A type main sequence stars, and typical brightness fluctuations are 0. ...
stars.
Supernova 1987A was the closest supernova to occur since the invention of the telescope.
SNR 0509-67.5
SNR 0509-67.5 is a remnant from a supernova in the Large Magellanic Cloud (LMC), that is 160,000 light years away in the constellation Dorado. It displays a clear shock wave shock shell pattern.
It was probably a type Ia supernova, as indica ...
is the remnant of an unusually energetic Type 1a supernova from about 400 years ago.
HE 0437-5439
HE 0437-5439 is a massive, unbound hypervelocity star (HVS), also called HVS3. It is a main sequence Stellar classification, B-type star located in the Dorado constellation. It was discovered in 2005 in astronomy, 2005 with the Kueyen t ...
is a
hypervelocity star
In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space.
Stellar kinematics encompasses the measurement of stellar velocities in the Milky Way and its satellites as well as ...
escaping from the
Milky Way
The Milky Way is the galaxy that includes our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye ...
/
Magellanic Cloud
The Magellanic Clouds (''Magellanic system'' or ''Nubeculae Magellani'') are two irregular galaxy, irregular dwarf galaxy, dwarf galaxy morphological classification, galaxies in the southern celestial hemisphere. Orbiting the Milky Way galaxy, t ...
system.
Dorado is also the location of the South
Ecliptic pole
An orbital pole is either point at the ends of an imaginary line segment that runs through the center of an orbit (of a revolving body like a planet, moon or satellite) and is perpendicular to the orbital plane. Projected onto the celestial sphe ...
, which lies near the fish's head. The pole was called "Polus Doradinalis" by
Willem Jansson Blaeu.
Deep-sky objects
Because Dorado contains part of the
Large Magellanic Cloud
The Large Magellanic Cloud (LMC), or Nubecula Major, is a satellite galaxy of the Milky Way. At a distance of around 50 kiloparsecs (≈160,000 light-years), the LMC is the second- or third-closest galaxy to the Milky Way, after the ...
, it is rich in deep sky objects. The Large Magellanic Cloud, 25,000 light-years in diameter, is a
satellite galaxy
A satellite galaxy is a smaller companion galaxy that travels on bound orbits within the gravitational potential of a more massive and luminous host galaxy (also known as the primary galaxy). Satellite galaxies and their constituents are bound ...
of the Milky Way Galaxy, located at a distance of 179,000 light-years. It has been deformed by its gravitational interactions with the larger Milky Way. In 1987, it became host to
SN 1987A
SN 1987A was a type II supernova in the Large Magellanic Cloud, a dwarf satellite galaxy of the Milky Way. It occurred approximately from Earth and was the closest observed supernova since Kepler's Supernova. 1987A's light reached Earth on Feb ...
, the first supernova of 1987 and the closest since 1604. This 25,000-light-year-wide galaxy contains over 10,000 million stars. All coordinates given are for Epoch
J2000.0
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 pertu ...
.
![Potw1422a](https://upload.wikimedia.org/wikipedia/commons/6/62/Potw1422a.jpg)
*
N 180B
N 180B is an emission nebula located in the Large Magellanic Cloud.
References
Emission nebulae
Dorado (constellation)
Large Magellanic Cloud
{{nebula-stub ...
is an
emission nebula
An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths. The most common source of ionization is high-energy ultraviolet photons emitted from a nearby hot star. Among the several different types of emissio ...
located in the
Large Magellanic Cloud
The Large Magellanic Cloud (LMC), or Nubecula Major, is a satellite galaxy of the Milky Way. At a distance of around 50 kiloparsecs (≈160,000 light-years), the LMC is the second- or third-closest galaxy to the Milky Way, after the ...
.
*
NGC 1566
NGC 1566, sometimes known as the Spanish Dancer, is an intermediate spiral galaxy in the constellation Dorado, positioned about 3.5° to the south of the star Gamma Doradus. It was discovered on May 28, 1826 by Scottish astronomer James Dunlop. ...
(
RA 04h 20m 00s
Dec -56° 56.3′) is a face-on spiral galaxy. It gives its name to the
NGC 1566 Group of galaxies.
*
NGC 1755 (RA 04h 55m 13s Dec -68° 12.2′) is a globular cluster.
*
NGC 1763
NGC 1763 (also known as N11 B, LH 10 or ESO 85-EN20) is an emission nebula with an embedded star cluster in the Dorado constellation in the Large Magellanic Cloud, It is very bright, very large and very irregular. Its apparent size is about 3.0-5. ...
(RA 04h 56m 49s Dec -68° 24.5′) is a bright nebula associated with three type B stars.
*
NGC 1820
NGC 1820 (also known as ESO 85-SC39) is an open cluster in the Dorado constellation. It is located within the Large Magellanic Cloud. It has a magnitude of 9.0 and was discovered by John Herschel on 2 January 1837.
References
{{DEFAULT ...
(RA 05h 04m 02s Dec -67° 15.9′) is an open cluster.
*
NGC 1850 (RA 05h 08m 44s Dec -68° 45.7′) is a globular cluster.
*
NGC 1854 (RA 05h 09m 19s Dec -68° 50.8′) is a globular cluster.
*
NGC 1869
NGC 1869 (also known as ESO 85-SC55) is an open cluster in the Dorado constellation. It is located within the Large Magellanic Cloud. It was discovered by James Dunlop on September 24, 1826, using a telescope reflector with a nine-inch aperture. ...
(RA 05h 13m 56s Dec -67° 22.8′) is an open cluster.
*
NGC 1901
NGC 1901 is an open cluster in the Dorado Constellation. It has a bright middle and is a little rich, with stars from 7th magnitude downwards. The celestial object was discovered on 30 December 1836 by the British astronomer John Hers ...
(RA 05h 18m 15s Dec -68° 26.2′) is an open cluster.
*
NGC 1910
NGC 1910, or LH-41, is an OB association in the Large Magellanic Cloud.
Location
NGC 1910's right ascension is and its declination is -69° 14′ 12.1″. Its angular size is 1.54 arcminutes.
N119
The cluster has an associated HII regi ...
(RA 05h 18m 43s Dec -69° 13.9′) is an open cluster.
*
NGC 1936
NGC 1936 (also known as IC 2127 and ESO 056-EN111) is an emission nebula which is part of the larger N44 (emission nebula), LMC-N44 nebula located in the Dorado constellation in the Large Magellanic Cloud. It was discovered by John Herschel in 18 ...
(RA 05h 22m 14s Dec -67° 58.7′) is a bright nebula and is one of four NGC objects in close proximity, the others being
NGC 1929,
NGC 1934
NGC 1934 (also known as ESO 56-SC109) is an emission nebula located in the Dorado constellation and part of the Large Magellanic Cloud. It was discovered by John Herschel on November 23, 1834. Its apparent magnitude is 10.50.
References
E ...
and
NGC 1935
NGC 1935 (also known as ESO 56-EN110 and IC 2126) is an emission nebula which is part of the larger N44 (emission nebula), LMC-N44 nebula in the Dorado constellation. NGC 1935 is also located in the Large Magellanic Cloud. It was discovered by J ...
.
*
NGC 1978
NGC 1978 (also known as ESO 85-SC90) is an elliptical shaped globular cluster or open cluster in the constellation Dorado. It is located within the Large Magellanic Cloud. It was discovered by James Dunlop on November 6, 1826. At an aperture of 50 ...
(RA 05h 28m 36s Dec -66° 14.0′) is an open cluster.
*
NGC 2002
NGC 2002 (also known as ESO 86-SC3) is an open cluster located in the Dorado constellation and is part of the Large Magellanic Cloud. It was discovered by James Dunlop on September 24, 1826. Its apparent magnitude is 10.1, and its size is 2.0 arc ...
(RA 05h 30m 17s Dec -66° 53.1′) is an open cluster.
*
NGC 2014
NGC 2014 is a red emission nebula surrounding an open cluster of stars in the Large Magellanic Cloud, at a distance of about 163,000 light-years.
The nebula was discovered on 3 August 1826 by James Dunlop. Together with NGC 2020 it makes up what ...
(RA 05h 44m 12.7s Dec −67° 42′ 57″) is a red emission nebula.
*
NGC 2020
NGC 2020 is an HII Region surrounding the Wolf-Rayet star BAT99-59. It is located in the Large Magellanic Cloud.
The nebula was discovered on 30 December 1836 by John Herschel. Together with NGC 2014 it makes up what is called the Cosmic Reef ...
(RA 05h 44m 12.7s Dec −67° 42′ 57″) is an HII region surrounding a
Wolf–Rayet star
Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of ionised helium and highly ionised nitrogen or carbon. The spectra indicate very high surface ...
.
*
NGC 2027
NGC 2027 (also known as ESO 86-SC13) is a 12th magnitude open cluster located in the Dorado constellation which is also part of the Large Magellanic Cloud and was discovered by James Dunlop on November 6, 1826. Its apparent diameter is 0.7 arcmin ...
(RA 05h 35m 00s Dec -66° 55.0′) is an open cluster.
*
NGC 2032
NGC 2032 (also known as ESO 56-EN160 and the Seagull Nebula) is an emission nebula in the Dorado constellation and near the supershell LMC-4 and it consists of NGC 2029, NGC 2035 and NGC 2040. It was first discovered by James Dunlop on 27 Septemb ...
(RA 05h 35m 21s Dec -67° 34.1′; also known as "Seagull Nebula") is a nebula complex that contains four NGC designations:
NGC 2029, NGC 2032,
NGC 2035
NGC 2035 (also known as ESO 56-EN161 and the Dragon's Head Nebula) is an emission nebula and a H II region in the Dorado constellation and part of the Large Magellanic Cloud. It was discovered by James Dunlop on August 3, 1826. Its apparent si ...
and
NGC 2040
NGC 2040 is an open star cluster located 160,000 light years away in the constellation of Dorado. It is a young group of stars in one of the largest star formation regions of the Large Magellanic Cloud.
References
External links
*
{{DEF ...
.
![Galaxy with a view](https://upload.wikimedia.org/wikipedia/commons/e/e0/Galaxy_with_a_view.jpg)
*
NGC 2074
NGC 2074 is a magnitude ~8 emission nebula in the Tarantula Nebula located in the constellation Dorado. It was discovered on 3 August 1826 by James Dunlop
and around 1835 by John Herschel. It is described as being "pretty bright, pretty large, mu ...
(RA 05h 39m 03.0s, Dec −69° 29′ 54″) is an emission nebula.
*
NGC 2080
NGC 2080, also known as the Ghost Head Nebula, is a star formation, star-forming region and emission nebula to the south of the 30 Doradus (Tarantula) nebula, in the southern constellation Dorado. It belongs to the Large Magellanic Cloud, a satell ...
, also called the "Ghost Head Nebula", is an emission nebula that is 50 light-years wide in the Large Magellanic Cloud. It is named for the two distinct white patches that it possesses, which are regions of recent
. The western portion is colored green from
doubly ionized oxygen
In astronomy and atomic physics, doubly ionized oxygen is the ion O2+ (O III in spectroscopic notation). Its emission forbidden lines in the visible spectrum fall primarily at the wavelength 500.7 nm, and secondarily at 495.9 nm. Before ...
, the southern portion is red from
hydrogen alpha
H-alpha (Hα) is a specific deep-red visible spectral line in the Balmer series with a wavelength of 656.28 nm in air and 656.46 nm in vacuum; it occurs when a hydrogen electron falls from its third to second lowest energy level. H-alph ...
emissions, and the center region is colored yellow from both oxygen and hydrogen emissions. The western white patch, A1, has one massive, recently formed star inside. The eastern patch, A2, has several stars hidden in its dust.
*
Tarantula Nebula
The Tarantula Nebula (also known as 30 Doradus) is a large H II region in the Large Magellanic Cloud (LMC), forming its south-east corner (from Earth's perspective).
Discovery
The Tarantula Nebula was observed by Nicolas-Louis de Lacaille durin ...
is in the Large Magellanic Cloud, named for its spiderlike shape. It is also designated 30 Doradus, as it is visible to the naked eye as a slightly out-of-focus star. Larger than any nebula in the Milky Way at 1,000 light-years in diameter, it is also brighter, because it is illuminated by the open star cluster
NGC 2070
NGC 2070 (also known as Caldwell 103) is a large open cluster and candidate super star cluster forming the heart of the bright region in the centre-south-east of the Large Magellanic Cloud. It is at the centre of the Tarantula Nebula and produce ...
, which has at its center the star cluster
R136
R136 (formerly known as RMC 136 from the Radcliffe Observatory Magellanic Clouds catalogue) is the central concentration of stars in the NGC 2070 star cluster, which lies at the centre of the Tarantula Nebula in the Large Magellanic Cloud. When ...
. The illuminating stars are
supergiant
Supergiants are among the most massive and most luminous stars. Supergiant stars occupy the top region of the Hertzsprung–Russell diagram with absolute visual magnitudes between about −3 and −8. The temperature range of supergiant stars spa ...
s.
*
NGC 2164
NGC 2164 is a 10th-magnitude open cluster in the Dorado constellation. The celestial object was discovered on September 27, 1826, by the Scottish astronomer James Dunlop
James Dunlop FRSE (31 October 1793 – 22 September 1848) was a Scot ...
(RA 05h 58m 53s Dec -68° 30.9′) is a globular cluster.
*
N44 is a
superbubble in the Large Magellanic Cloud that is 1,000 light-years wide. Its overall structure is shaped by the 40 hot stars towards its center. Within the superbubble of N44 is a smaller bubble catalogued as N44F. It is approximately 35 light-years in diameter and is shaped by an incredibly hot star at its center, which has a
stellar wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star. It is distinguished from the bipolar outflows characteristic of young stars by being less collimated, although stellar winds are not generally spherically symmetric.
D ...
speed of 7 million kilometers per hour. N44F also features dust columns with probable
hidden inside.
Equivalents
In
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 twe ...
, the stars of Dorado are in two of
Xu Guangqi
Xu Guangqi or Hsü Kuang-ch'i (April 24, 1562– November 8, 1633), also known by his baptismal name Paul, was a Chinese agronomist, astronomer, mathematician, politician, and writer during the Ming dynasty. Xu was a colleague and collaborato ...
's
Southern Asterisms (近南極星區, ''Jìnnánjíxīngōu''): the
White Patches Attached (夾白, ''Jiābái'') and the
Goldfish
The goldfish (''Carassius auratus'') is a freshwater fish in the family Cyprinidae of order Cypriniformes. It is commonly kept as a pet in indoor aquariums, and is one of the most popular aquarium fish. Goldfish released into the wild have ...
(金魚, ''Jīnyú'').
[AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 27 日]
/ref>
Namesakes
* ''Dorado ''(SS-248) and ''Dorado'' (SS-526), two United States Navy submarines, were named after the same sea creature as the constellation.
Gallery
NGC1706 - HST - Potw1943a.tif, NGC 1706
NGC commonly refers to:
* New General Catalogue of Nebulae and Clusters of Stars, a catalogue of deep sky objects in astronomy
NGC may also refer to:
Companies
* NGC Corporation, name of US electric company Dynegy, Inc. from 1995 to 1998
* Nati ...
is a spiral galaxy, about 230 million light-years away.
See also
* Dorado in Chinese astronomy The modern constellation Dorado is not included in the Three Enclosures and Twenty-Eight Mansions system of traditional Chinese uranography because its stars are too far south for observers in China to know about them prior to the introduction of ...
* Dutch celestial cartography in the Age of Exploration
The history of cartography refers to the development and consequences of cartography, or mapmaking technology, throughout human history. Maps have been one of the most important human inventions for millennia, allowing humans to explain and navig ...
* IAU-recognized constellations
References
;Notes
* The above deep sky objects appear in ''Norton's Star Atlas
{{refimprove, date=August 2015
''Norton's Star Atlas'' is a set of 16 celestial charts, first published in 1910 and currently in its 20th edition under the editorship of Ian Ridpath. The ''Star Atlas'' covers the entire northern and southern sky, ...
'', 1973 edition.
* Co-ordinates are obtained fro
Uranometria Chart Index
an
Skyview
* Images of the deep sky objects described herein may be viewed a
Skyview
;Citations
Sources
*
*
*
External links
Peoria Astronomical Society - Dorado
{{DEFAULTSORT:Dorado
Southern constellations
Constellations listed by Petrus Plancius
Dutch celestial cartography in the Age of Discovery
Astronomy in the Dutch Republic
1590s in the Dutch Republic