Delphinus (Pronounciation:Del-fine-us, Abbrev:Del, Latin:Delphini) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Delphinus takes up 188.549 sq. degrees of the night sky which equates to 0.46% of the night sky. The constellation gets its name as it name means The Dolphin . The constellation is one of the original constellations that was devised by the Ancient Greco-Egyptian astronomer Ptolemy who lived between 90 A.D. and 168 A.D.
Delphinus is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Delphinus is a northern hemispheric constellation which means it can't be seen easily or at all from the southern hemisphere.
The number of stars that have been catalogued as part of the Hipparcos Star Catalogue from Delphinus is 521. The number of stars that are of magnitude 6.0 or lower in the constellation is 18. The number of stars in the constellation that make up the outline is 6.
There are no deep space objects that were identified by Charles Messier in this constellation. There are no non-Messier deep space objects in this constellation that are covered at present on this site.
The nearest star to Earth is Gliese 795 which is roughly about 54.54 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 196885 which is about 109.34 Light Years. The furthest star that can be located in the constellation is HIP 102853 which is located about 81540.8 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 dimmest star that can be seen in Delphinus with the naked eye is HD 196775. The dim star has an apparent magnitude of 5.99. 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 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.
Delphinus is the dolphin that persuaded Amphitrite, a nereid that she should accept Poseidon`s wooing. Amphitrite had wanted to keep her virginity thus running off. Delphinus was one of those tasked with finding her. Another story has Delphinus as the dolphin who saved the Greek poet Arion of Lesbos from drowning after he was thrown overboard.There are no major meteor showers that radiate from within this constellation.
|Is a Zodiac Sign||No|
|Area||188.549 sq. deg.|
|Percentage of Night Sky||0.46%|
|Site Exoplanet Count||2|
|Meteor Shower Count||3|
|Nearest Star||Gliese 795|
|Nearest Star with Exoplanet(s)||HD 196885|
|Dimmest Star||HD 196775|
|Furthest Star||HIP 102853|
|Bright Star Count||18|
|Hipparcos Star Count||521|
|Main Star Count||6|
|Messier Deep Space Object Count||0|
|*Non-Messier Deep Space Object Count||0|
|Bordering / Neighbouring / Surrounding Constellations||Vulpecula|
*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.
The map was generated using Night Vision, an awesome free application by Brian Simpson.
|Star||Distance (Lt. Yrs.)||Exoplanet Count||Declination||Right Ascension|
|HD 195019||125.64||1||+18d 46` 10.7||20h 28m 18.42|
|HD 196885||109.34||1||+11d 14` 58.0||20h 39m 51.85|
As there's so many stars in the cosmos, not all the stars are listed here. The site has lots of stars not listed so if your star isn't listed and you know the Henry Draper or Hipparcos ID, type https://www.universeguide.com/star/ then followed by the HIPNNNNNN or HDNNNN where NNNNN is the number part of the name. The stars that I do list have either a traditional name, a bayer or other classification name.
|Star||Distance (Lt. Yrs.)||Declination||Right Ascension|
|1 Delphini||742.97||+10d 53` 45.3||20h 30m 17.95|
|10 Delphini||507.25||+14d 34` 58.4||20h 41m 16.21|
|13 Delphini||428.60||+06d 00` 29.7||20h 47m 48.33|
|14 Delphini||500.25||+07d 51` 51.0||20h 49m 48.24|
|15 Delphini||99.87||+12d 32` 41.6||20h 49m 37.74|
|16 Delphini||197.32||+12d 34` 06.6||20h 55m 38.55|
|17 Delphini||479.65||+13d 43` 17.6||20h 55m 36.68|
|Delta Delphini||223.25||+15d 04` 28.9||20h 43m 27.55|
|Deneb Dulfim||330.46||+11d 18` 12.0||20h 33m 12.76|
|Eta Delphini||236.18||+13d 01` 37.9||20h 33m 57.00|
|EU Delphini||381.03||+18d 16` 06.4||20h 37m 54.71|
|Gamma Delphini||123.78||+16d 07` 28.6||20h 46m 38.87|
|Gamma Delphini B||126.32||+16d 07` 29.2||20h 46m 39.52|
|Gliese 795||54.54||+04d 58` 18.7||20h 39m 37.20|
|Iota Delphini||188.97||+11d 22` 39.7||20h 37m 49.10|
|Kappa Delphini||98.24||+10d 05` 10.1||20h 39m 07.59|
|LU Delphini||485.36||+17d 31` 17.0||20h 41m 58.16|
|MR Delphini||158.33||+05d 13` 06.1||20h 31m 13.29|
|Musica||245.60||+10d 50` 21.7||20h 58m 25.96|
|Rotanev||100.89||+14d 35` 42.7||20h 37m 32.87|
|Sualocin||253.82||+15d 54` 43.4||20h 39m 38.25|
|Theta Delphini||2013.35||+13d 18` 54.5||20h 38m 43.98|
|U Delphini||1568.09||+18d 05` 24.2||20h 45m 28.23|
|W Delphini||2203.81||+18d 17` 03.8||20h 37m 40.09|
|Zeta Delphini||220.08||+14d 40` 27.1||20h 35m 18.51|
|K||Light Orange Star 3,700 - 5,200k||162|
|A||White 7,500 - 10,000k||125|
|F||Yellow-White 6,000 - 7,500k||92|
|G||Yellow 5,200 - 6,000k||64|
|M||Red Dwarf Star <3,700k||40|
|B||Blue-White 10,500 - 30,000k||27|
|Ib||Less Luminous Supergiant||1|
|VI||VI Type Sub-Dwarf Star||1|
|R||R-Type Carbon Star||1|
|N||N-Type Carbon Star||1|