Dorado (Pronounciation:Door-ado, Abbrev:Dor, Latin:Doradus) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Dorado takes up 179.173 sq. degrees of the night sky which equates to 0.43% of the night sky. Dorado is the 72nd largest in terms of size in the night sky.
The constellation name means The Goldfish . It was not one of the original constellations that had been devised by Ptolemy, instead it was created by Pieter Dirkszoon Keyser and Frederick de Houtman years later.
There are 5 stars that make up the main constellation. The hipparcos satellite scanned and detailed 524 stars. There are 18 stars that can be seen with the naked eye in the constellation on a very clear night sky.
Dorado is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Dorado is a southern hemispheric constellation which means it can't be seen easily or at all from the northern hemisphere.
The distance to Dorado is not calculable because all the stars that make up the constellation are at various distances. The best answer for distance to Dorado is to calculate the average distance of the stars.
There are 7 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site. There is a dedicated page for exoplanets in Dorado. The current largest star so far identified in the constellation of Dorado is S Doradus.
There are no deep space objects that were identified by Charles Messier in this constellation. There are 3 non-Messier deep space objects that are covered on this site and the list is below.
The image at the top right of this page was generated using Night Vision, a free to use and download application by Brian Simspon.
The caveat of these stars are that they are catalogued on this site. If you know of a star that is nearer or further then do let me know in the comments and I'll add it to the site. The stars mentioned are from the Hipparcos catalogue or have been added because of their special status.
The nearest star to Earth is HIP 22738 which is roughly about 36.23 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 30177 which is about 172.3 Light Years.
The furthest star that is located in the constellation is S Doradus and it is 169000 light years away from the Sun. The furthest figure is derived from either the 1997 or 2007 Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong.
The brightest star in Dorado is Alpha Doradus and is located about 63.08 light years from the Sun. The star has a apparent magnitude of 3.3 but an absolute magnitude of -0.27 when the star is viewed from a distance of 10 Parsecs or 32.6 Light Years. The star is recognised as being the brightest in the constellation as it has the Bayer status of Alpha.
The dimmest star that can be seen in Dorado with the naked eye is Eta1 Doradus. The dim star has an apparent magnitude of 5.72. The dimmest star that a person is able to see with their naked eye is 6.0 magnitude based on the table in the reference. Ref: University of Michigan.
The star is a newish star, HE 0437-5439 is estimated at being about 30 million years. To put that it into context, the dinosaurs became extinct 65 million years ago. It is a hypervelocity star and is on its way out of the galaxy and will one day be known as a rogue star.
VFTS-102 is remarkable in the fact that it is one of the fastest rotating stars ever to be discovered. It is rotating at more than a million miles a second, 1000 times faster than our Sun. The rotating has caused VFTS-102 to flatten out.
There is no Greek Legend behind this constellation. It was created by Pieter Dirkszoon Keyser and Frederick de Houtman to fill in the voids in the astronomical charts.
There are 2 Meteor Showers that occur during the year within this constellation based on information gathered from Adam Mickiewicz University (Poland). The list below are major ones and which I have a date period for.
|Name||Activity||Peak Activity||Closest Star|
|Gamma Doradids||27 Aug- 3 Sep||28-Aug||Gamma Doradus|
The following list contains the stars that make up the constellation. For a larger list of stars in the entire constellation area, please visit the For a list of named stars, that is stars that don't start HD or HIP, please visit Dorado Star List page.
|Name||Bayer||Distance (Lt.Yr.)||Right Ascension||Declination||Spectral Type||Colour|
|Alpha Doradus||Alpha Doradus||168.65||04h 33m 59.72||-55d 02` 42.0||A0V:||White|
|Beta Doradus||Beta Doradus||1006.68||05h 33m 37.52||-62d 29` 23.5||F6Ia||Yellow/White|
|Gamma Doradus||Gamma Doradus||66.74||04h 16m 01.49||-51d 29` 13.5||F4III||Yellow/White|
|Delta Doradus||Delta Doradus||149.62||05h 44m 46.42||-65d 44` 07.9||A7V||White|
|Zeta Doradus||Zeta Doradus||37.98||05h 05m 30.69||-57d 28` 22.8||F7V||Yellow/White|
|Is a Zodiac Sign||No|
|Largest Star||S Doradus|
|Brightest Star||Alpha Doradus|
|Area||179.173 sq. deg.|
|Percentage of Night Sky||0.43%|
|Site Exoplanet Count||7|
|Meteor Shower Count||2|
|Nearest Star||HIP 22738|
|Nearest Star with Exoplanet(s)||HD 30177|
|Largest Star||S Doradus|
|Brightest Star||Alpha Doradus|
|Dimmest Star||Eta1 Doradus|
|Furthest Star||S Doradus|
|Bright Star Count||18|
|Hipparcos Star Count||524|
|Main Star Count||5|
|Messier Deep Space Object Count||0|
|*Non-Messier Deep Space Object Count||3|
|Bordering / Neighbouring / Surrounding Constellations||Caelum|
*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.
|DEM L241||Supernova Remnant||160,000||-67:35:09.00||05h 36m 00m 0s|
|Ghosthead Nebula||Emission Nebula||160,000 Ly||-69d 38` 44?||05h 39m 44m 2s|
|Large Magellanic Cloud||Dwarf Galaxy||163.000||-69:45:22||05h 23m 34m 5s|
|SN1987a||Supernova Remnant||170,000||-69:16:11.79||05h 35h 28m 03|
|Tarantula Nebula (NGC2070)||Globular Cluster||160.000||-69:05.7||05h 38m 38s|