The constellation Dorado may be found in the southern sky. It was first named in the late 16th century and is now one of the eighty-eight constellations that make up the modern sky. Its name is derived from the dolphinfish (Coryphaena hippurus), which is also known as the dorado in Spanish and has been represented as a swordfish. The Large Magellanic Cloud is mostly contained in the constellation Dorado, with the remainder in the constellation Mensa. This constellation also contains the South Ecliptic Pole.
 
Even though the name Dorado is Spanish, astronomers use the Latin genitive form Doradus when identifying its stars; it is viewed (together with the nearby asterism Argo Navis) as a feminine proper name of Greek origin ending in - (like Io, Callisto, or Argo), which all have a genitive ending.

Dorado - Zotti, G., Hoffmann, S. M., Wolf, A., Chéreau, F., & Chéreau, G. (2021). The Simulated Sky: Stellarium for Cultural Astronomy Research. Journal of Skyscape Archaeology, 6(2), 221–258. https://doi.org/10.1558/jsa.17822

History
The stars of Dorado can be found in two of Xu Guangqi's Southern Asterisms (近南極星區, Jìnnánjíxīngōu): the White Patches Attached (夾白, Jiābái) and the Goldfish (金魚, Jīnyú) in Chinese astronomy.

Dorado was one of Petrus Plancius' twelve constellations named after observations by Pieter Dirkszoon Keyser and Frederick de Houtman. (Ridpath & Tirion 2017) It appeared as follows: On Plancius' maps from 1592 and 1594, he appears as Polophylax, an elderly bearded man (Greek for "guardian of the pole").

Petrus Plancius with Jodocus Hondius published a celestial globe with a diameter of 35 centimetres (14 in) in Amsterdam in 1597 (or 1598).
In Johann Bayer's Uranometria of 1603, it was first depicted in a celestial atlas, when it was given the name Dorado.
It was first named Xiphias, the swordfish, in Johannes Kepler's rendition of Tycho Brahe's star list in the Rudolphine Tables of 1627.
Dorado has been shown as a dolphin fish and a swordfish in the past; the latter is incorrect. (Staal 1988) A goldfish has also been used to symbolise it. (Ridpath & Tirion 2017) Xiphias was another name for the constellation in the 17th and 18th centuries. Dorado eventually became the most popular name, and the IAU adopted it.

Dorado has been depicted as multiple sea creatures over the ages finally ending as the above picture of a dolphin fish. Zotti, G., Hoffmann, S. M., Wolf, A., Chéreau, F., & Chéreau, G. (2021). The Simulated Sky: Stellarium for Cultural Astronomy Research. Journal of Skyscape Archaeology, 6(2), 221–258. https://doi.org/10.1558/jsa.17822

Deep-sky Objects
Dorado is rich in deep sky objects because it contains a portion of the Large Magellanic Cloud (LMC), with a diameter of 25,000 light-years and 179,000 light-years, is a satellite galaxy of the Milky Way Galaxy. Its gravitational interactions with the bigger Milky Way have distorted it. It was home to SN 1987A in 1987, the first supernova of the year and the closest since 1604. [5] Over 10,000 million stars make up this 25,000-light-year-wide galaxy. (Ridpath & Tirion 2017).

N 180B – Emission Nebula in the Large Magellanic Cloud
NGC 1566 - spiral galaxy. It gives its name to the NGC 1566 (Group of galaxies).
NGC 1755 - Globular Cluster.
NGC 1763 - bright Emission Nebula associated with three type B stars.
NGC 1820 - Open Cluster.
NGC 1850 - Globular Cluster.
NGC 1854 - Globular Cluster.
NGC 1869 - Open Cluster.
NGC 1901 - Open Cluster.
NGC 1910 - Open Cluster.
NGC 1936 – Emission bright nebula and is one of four NGC objects near NGC 1929 (Open Cluster), NGC 1934 (Emission Nebula) and NGC 1935 Emission Nebula).
NGC 1978 is an open cluster.
NGC 2002 is an open cluster.
NGC 2014 is a red emission nebula.
NGC 2020 is an HII region surrounding a Wolf–Rayet star.
NGC 2027 is an open cluster.
NGC 2032 - Seagull Nebula - Emission Nebula complex (Containing 4 NGC catalogue objects - NGC 2029 (Emission Nebula), NGC 2032 (Emission Nebula), NGC 2035 (Emission Nebula) and NGC 2040 (Open Cluster)).
NGC 2080 – Ghost Head Nebula – Emission Nebula
NGC 2070 – Open Cluster within an HII Region in the LMC
NGC 2164 – Globular Cluster
N44 – Emission Nebula (Containing a super bubble structure)
Main stars - 3
Bayer stars - 14
Stars with planets - 5
Stars brighter than magnitude 3.00 - 0
Stars within 32 ly - 0

Bordering
constellations

• Caelum
• Horologium
• Reticulum
• Hydrus
• Mensa
• Volans
• Pictor

By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)