Universe Guide

Aries, The Ram Constellation

Aries Constellation Star Map

Aries (Pronounciation:Air-ees, Abbrev:Ari, Latin:Arietis) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Aries takes up 441.395 sq. degrees of the night sky which equates to 1.07% of the night sky. Aries is the 39th largest in terms of size in the night sky.

The constellation name means The Ram . 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.

There are 4 stars that make up the main constellation. The hipparcos satellite scanned and detailed 966 stars. There are 57 stars that can be seen with the naked eye in the constellation on a very clear night sky.

Aries is a member constellation of the Zodiac grouping, a group of 12 star signs that astrologers use to predict someones future based on their date of birth and which constellation appeared when the Sun set. The Zodiac year may be divided up equally between the twelve signs but when they appear in the night sky no longer conforms to the Zodiac calendar. Aries is an equatorial constellation that can be seen by countries nearest the Equator.

There are 17 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site. There is a dedicated page for exoplanets in Aries.

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 image at the top right of this page was generated using Night Vision, a free to use and download application by Brian Simspon.

Distance to Aries

You can't just go to one location and arrive at the constellation because the constellation is made up of stars at different locations and different distances. The nearest main star in the constellation is at a distance of 58.66 light years and the furthest main star is a distance of 165.65 light years. The average distance to the main stars is 113.55 light years.

Aries Star Facts

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.

HIP 15713, Aries's Furthest Star

The furthest star that is located in the constellation is HIP 15713 and it is 108721.1 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.

29 Arietis, Aries's Dimmest Visible Star

The dimmest star that can be seen in Aries with the naked eye is 29 Arietis. The dim star has an apparent magnitude of 6. 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.

Hamal (Alpha Arietis)

Hamal is one of those rare stars that is an Alpha star and has stars in orbit round it. The other stars that spring to mind are Aldebaran in the nearby constellation of Taurus and Fomalhaut, the Alpha star in Piscis Austrinus. Just because the star is an Alpha star doesn't mean that the planet will or will not have life on the planet, we just don't know.

Teegarden's Star

Teegarden's Star is named after the person who studied it, Bronnard Teegarden who was working at N.A.S.A. at the time. At a distance of 20 light years, it is one of the closest brown dwarf stars that have been discovered.

How to Find and View Aries in the Night Sky

Northern Hemisphere

From the beginning of the year, the constellation can be seen in a south westerly direction. If you can locate Orion which is one of the easiest constellations to spot the look to the right. The first constellation that you will come to is Taurus but after Taurus, you will find Aries. Throughout the first four months, it will be gradually getting lower in the sky as it moves westerly. It will reappear on the horizon near the end of August in the north east. The highest it gets is about Feb/Mar and then starts to decrease.

Southern Hemisphere

From a position in Sydney, you can see Aries from the beginning of the year in a northerly direction. To find Aries, look also for Aries but instead of look to the right and slightly up, look down and to the left. Taurus is still separating the two constellations. The constellation will disappear in March and only reappear in late September.

Aries Mythology

Athamas's son Phrixus and daughter Helle was carried by Aries to Colchis so that they could escape their stepmother Ino. Phrixus made it to safety but Helle fell into some water and became Hellepoint. Once Phrixus was safe, he sacrificed the Ram, its fleece was flung onto a Grove of Ares. The fleece turned to gold. Jason and the Argonauts sought out this fleece for its healing properties.

Meteor Showers Radiating from Aries

There are 28 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.

NameActivityPeak ActivityClosest Star
Northern Daytime May Arietids24th March  
Daytime Epsilon Arietids24 Apr- 27 May09-MayEpsilon Arietis
Epsilon ArietidsMay 9/10Epsilon Arietis
May ArietidsMay 16/17Epsilon Arietis
Daytime Epsilon Arietids24th MayEpsilon Arietis
ArietidsSept 7-Oct 27Oct. 8/9Epsilon Arietis
Southern October delta Arietids9th OctoberBotein
Tau Arietids2nd NovemberTau1 Arietis
Delta ArietidsDecember 8-January 2Dec. 8/9Botein

List of Main Stars in Aries

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 Aries Star List page.

NameBayerDistance (Lt.Yr.)Right AscensionDeclinationSpectral TypeColour
HamalAlpha Arietis65.8102h 07m 10.29+23d 27` 46.0K2IIIOrange
SheratanBeta Arietis58.6601h 54m 38.35+20d 48` 29.9A5V...White
MesarthimGamma Arietis164.0701h 53m 31.77+19d 17` 38.7A1p SiWhite
Bharani165.6502h 49m 58.99+27d 15` 38.8B8VnBlue/White

Aries Facts

Is a Zodiac Sign Yes
Brightest StarHamal
Area441.395 sq. deg.
Percentage of Night Sky1.07%
Size Position39th
Hemisphere Equatorial
Site Exoplanet Count17
Meteor Shower Count28
Nearest StarVX Arietis
Nearest Star with Exoplanet(s)Hamal
Brightest StarHamal
Dimmest Star29 Arietis
Furthest StarHIP 15713
Bright Star Count57
Hipparcos Star Count966
Main Star Count4
Messier Deep Space Object Count0
Bordering / Neighbouring / Surrounding ConstellationsTriangulum

*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.

List of Deep Space Objects (Galaxies, Nebulas, Supernovas, etc) in Aries

NameTypeDistanceDeclinationRight Ascension
NGC 1024Spiral Galaxy+10 50 48.5202 39 11m 965
NGC 1134Spiral Galaxy+13 00 51.20583069302 53 41m 3600789046
NGC 1156Dwarf Irregular Galaxy+25:14:1402h 59h 42m 2
NGC 2371Planetary Nebula4,500 29:29:39.2007h 25h 33m 83
NGC 673Galaxy+11 31 17.6401 48 22m 461
NGC 691Galaxy in a Group of Galaxies+21 45 35.89531587101 50 41m 7086928919
NGC 772Galaxy in a Pair of Galaxies+19 00 27.47639864101 59 19m 5556685548

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