Equuleus (Pronounciation:Ek-we-lee-us, Abbrev:Equ, Latin:Equulei) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Equuleus takes up 71.641 sq. degrees of the night sky which equates to 0.17% of the night sky. The constellation gets its name as it name means The Horse . 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.
Equuleus is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Equuleus is an equatorial constellation that can be seen by countries nearest the Equator.
The number of stars that have been catalogued as part of the Hipparcos Star Catalogue from Equuleus is 170. The number of stars that are of magnitude 6.0 or lower in the constellation is 11. The number of stars in the constellation that make up the outline is 5.
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 818 which is roughly about 49.11 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 200964 which is about 235.5 Light Years. The furthest star that can be located in the constellation is HIP 103586 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 Equuleus with the naked eye is HD 199942. The dim star has an apparent magnitude of 5.98. 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.
Was known as Celaris, the foal brother of Pegasus who was given to Mercury by Castor.There are no major meteor showers that radiate from within this constellation.
|Is a Zodiac Sign||No|
|Area||71.641 sq. deg.|
|Percentage of Night Sky||0.17%|
|Site Exoplanet Count||2|
|Meteor Shower Count||2|
|Nearest Star||Gliese 818|
|Nearest Star with Exoplanet(s)||HD 200964|
|Dimmest Star||HD 199942|
|Furthest Star||HIP 103586|
|Bright Star Count||11|
|Hipparcos Star Count||170|
|Main Star Count||5|
|Messier Deep Space Object Count||0|
|*Non-Messier Deep Space Object Count||0|
|Bordering / Neighbouring / Surrounding Constellations||Delphinus|
*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 200964||235.50||2||+03d 48` 10.8||21h 06m 39.79|
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|
|4 Equulei||159.57||+05d 57` 30.6||21h 05m 26.79|
|6 Equulei||443.16||+10d 02` 56.0||21h 10m 31.31|
|9 Equulei||654.95||+07d 21` 16.4||21h 21m 04.80|
|Beta Equulei||330.79||+06d 48` 40.0||21h 22m 53.58|
|Delta Equulei||60.30||+10d 00` 27.8||21h 14m 28.79|
|Epsilon Equulei||176.40||+04d 17` 37.8||20h 59m 04.54|
|Gamma Equulei||118.39||+10d 07` 55.0||21h 10m 20.47|
|Gliese 818||49.11||+07d 04` 14.4||21h 05m 19.70|
|Kitalpha||190.29||+05d 14` 53.1||21h 15m 49.40|
|Lambda Equulei||264.10||+07d 10` 47.3||21h 02m 12.51|
|S Equulei||1953.07||+05d 04` 49.4||20h 57m 12.83|
|SY Equulei||4181.58||+09d 55` 55.0||21h 23m 28.81|
|Zeta Equulei||769.25||+05d 30` 10.3||21h 04m 34.64|
|K||Light Orange Star 3,700 - 5,200k||61|
|F||Yellow-White 6,000 - 7,500k||45|
|A||White 7,500 - 10,000k||34|
|G||Yellow 5,200 - 6,000k||14|
|M||Red Dwarf Star <3,700k||9|
|B||Blue-White 10,500 - 30,000k||2|
|R||R-Type Carbon Star||1|