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Andromeda, Ethiopian Princess Constellation

Andromeda Constellation Star Map

Andromeda (Pronounciation:An-drom-e-da, Abbrev:And, Latin:Andromedae) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Andromeda takes up 722.278 sq. degrees of the night sky which equates to 1.75% of the night sky. Andromeda is the 19th largest in terms of size in the night sky.

The constellation name means Ethiopian Princess . 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 8 stars that make up the main constellation. The hipparcos satellite scanned and detailed 2112 stars. There are 80 stars that can be seen with the naked eye in the constellation on a very clear night sky.

Andromeda is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Andromeda is a northern hemispheric constellation which means it can't be seen easily or at all from the southern hemisphere.

There are 24 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site. There is a dedicated page for exoplanets in Andromeda.

There are 3 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 Andromeda

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 97.01 light years and the furthest main star is a distance of 598.46 light years. The average distance to the main stars is 249.05 light years.

Andromeda 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.

Groombridge 34, Andromeda's Nearest Star

The nearest star to Earth is Groombridge 34 which is roughly about 11.7 Light Years from the Earth. The nearest star to the Earth with an exoplanet is Titawin which is about 44 Light Years.

HIP 2396, Andromeda's Furthest Star

The furthest star that is located in the constellation is HIP 2396 and it is 326163.3 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.

Mirach, Brightest Star in Andromeda

The brightest star in Andromeda is Mirach and is located about 53.88 light years from the Sun. The star has a apparent magnitude of 2.07 but an absolute magnitude of -1.84 when the star is viewed from a distance of 10 Parsecs or 32.6 Light Years. The star is only recognised as being Beta Andromedae rather than having Alpha status.

HD 5608, Andromeda's Dimmest Visible Star

The dimmest star that can be seen in Andromeda with the naked eye is HD 5608. 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 number of stars that have been catalogued as part of the Hipparcos star Catalogue from Andromeda is 2112. The number of stars that are of magnitude 6.0 or lower in the constellation is 80. The number of stars in the constellation that make up the outline is 8.

Alpheratz

The star Alpheratz (Alpha Andromedae) is one of the brightest star in the constellation and also forms one corner of the square in Pegasus. It is sometimes referred to as Delta Pegasi to note its location.

Andromeda Mythology

Andromeda was the daughter of Queen Cassiopeia and King Cepheus, rulers of the kingdom of Philistia. The kingdom is now more closely associated with the African country of Ethiopia. The Queen was so jealous of her daughter's looks that she had her tied to a large rock. The Queen hoped the whale, Cetus, would kill her. She was saved by Perseus who then became his bride. The story is immortalised in the film 'Clash of the Titans

How to Find and View Andromeda in the Night Sky

Northern Hemisphere

Andromeda can be viewed in the night sky from about 7pm from September to May. The constellation will appear in a north-easterly direction at about 7pm in September. It will rise in the sky heading towards the west, peaking high in January before returning and disappearing in May.

Southern Hemisphere

Assuming you are viewing from near Sydney, Australia. Andromeda can be view from November to January in the southern hemisphere. The bad news is that Andromeda is low on the horizon and you would need to be away from city lights to be able to get a chance to see it.

Deep Space Objects in Andromeda

There are 3 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.

Andromeda Galaxy

The galaxy boasts one of our closest neighbouring galaxy, M31, Andromeda Galaxy. Our Galaxy, the milky way is reckoned to be 100,000 light years across but the Andromeda Galaxy is twice the size. It is expected to collide with our galaxy but don't worry, it won't happen for another 5 billion years at least. When it does, no one on Earth will be around to see it. All life on Earth will have gone after the Sun has grown large and heated the Sun. It is not the nearest galaxy to us, the Canis Major Dwarf Galaxy takes that title.

The Andromeda Galaxy has been to shown to have planets in orbit round some of its star. The galaxy is the furthest object in space that one can see with the naked eye. You won't be able to see the galaxy in much detail but you'll be able to see it as a fuzzy patch.

Meteor Showers Radiating from Andromeda

There are 11 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
nu Andromedids6th January  
Daytime beta Andromedids2nd February  
AndromedidsOct 26-Nov 20Nov 08Cih


List of Main Stars in Andromeda

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 Andromeda Star List page.

NameBayerDistance (Lt.Yr.)Right AscensionDeclinationSpectral TypeColour
AlpheratzAlpha Andromedae97.0100h 08m 23.17+29d 05` 27.0B9pBlue/White
MirachBeta Andromedae197.4401h 09m 43.80+35d 37` 15.0M0IIIvarRed
AlmachGamma Andromedae392.9702h 03m 53.92+42d 19` 47.5B8VBlue/White
Delta AndromedaeDelta Andromedae105.5200h 39m 19.60+30d 51` 40.4K3III...Orange
Mu AndromedaeMu Andromedae129.7400h 56m 45.10+38d 29` 57.3A5VWhite
Pi AndromedaePi Andromedae598.4600h 36m 52.84+33d 43` 09.7B5VBlue/White
NembusUpsilon Persei177.1701h 37m 59.50+48d 37` 42.6K3IIIOrange
49 Andromedae294.1101h 30m 06.10+47d 00` 26.6K0IIIOrange

Andromeda Facts


NameAndromeda
AbbreviationAnd
Is a Zodiac Sign No
Brightest StarMirach
Area722.278 sq. deg.
Percentage of Night Sky1.75%
Size Position19th
Hemisphere Northern
Site Exoplanet Count24
Meteor Shower Count11
Nearest StarGroombridge 34
Nearest Star with Exoplanet(s)Titawin
Brightest StarMirach
Dimmest StarHD 5608
Furthest StarHIP 2396
Bright Star Count80
Hipparcos Star Count2112
Main Star Count8
Messier Deep Space Object Count3
Bordering / Neighbouring / Surrounding ConstellationsCassiopeia
Lacerta
Pegasus
Pisces
Triangulum
Perseus

*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 Andromeda


NameTypeDistanceDeclinationRight Ascension
Andromeda Galaxy (M31, NGC224)Spiral Galaxy2,430,000 - 2,650,00+41:1600h 42m 7
ARP 273Colliding Galaxies300,000,00039 21 51.9602 21 30m 37
Blue Snowball NebulaPlanetary Nebula2,500 42:32:6.2823h 25h 53m 88
Le Gentil Satellite Galaxy of M31 (M32, NGC221)Satiellite Galaxy of M312,410,000 - 2,570,00+40:5200h 42m 7
Messier 110 (NGC205)Satiellite Galaxy of M312,600,000 - 2,780,00+41:4100h 40m 4
NGC 1000Galaxy in a Group of Galaxies+41 27 34.867532825 02 38 49m 7488297253
NGC 1001Galaxy in a Group of Galaxies+41 40 18.10974427002 39 12m 6696494866
NGC 11Spiral Galaxy+37 26 52.3900 08 42m 494
NGC 13Spiral Galaxy+33 25 59.97689573300 08 47m 7149165610
NGC 184Spiral Galaxy29:26:5100h 38h 35m 8
NGC 19Barred Spiral Galaxy+32 58 58.65670337600 10 40m 8753542224
NGC 20Lenticular Galaxy+33 18 31.47635423800 09 32m 6827169835
NGC 27Spiral Galaxy+28 59 46.42834926400 10 32m 7579937950
NGC 29Spiral Galaxy+33 21 10.2200 10 46m 886
NGC 39 Spiral Galaxy+31 03 39.9700 12 18m 853
NGC 43Barred Spiral+30 54 54.85613054100 13 00m 7734734553
NGC 48Barred Spiral Galaxy+48 14 05.5700 14 02m 215
NGC 49Lenticular Galaxy+48 14 47.40880048200 14 22m 4203086575
NGC 5Elliptical Galaxy+35 21 44.4600 07 48m 898
NGC 51Lenticular Galaxy+48 15 19.8600 14 34m 895
NGC 67Elliptical Galaxy+30 03 47.06715633600 18 14m 8318079005
NGC 68Lenticular Galaxy+30 04 18.01248791200 18 18m 4704427526
NGC 69Galaxy+30 02 23.84020631400 18 20m 4950995902
NGC 70Spiral Galaxy+30 04 46.3500 18 22m 572
NGC 71Elliptical Galaxy+30 03 47.7800 18 23m 553
NGC 717Spiral Galaxy+36 13 46.0301 53 55m 104
NGC 72Barred Spiral Galaxy+30 02 26.3800 18 28m 350
NGC 74Lenticular Galaxy+30 03 43.6400 18 49m 297
NGC 76Lenticular Galaxy+29 56 01.90951709900 19 37m 7887007517
NGC 7618Elliptical Galaxy+42 51 09.6523 19 47m 212
NGC 7640Galaxy+40 50 43.11234323823 22 06m 5743027480
NGC 7707Elliptical Galaxy+44 18 14.1823 34 51m 416
NGC 7831Spiral Galaxy+32 36 33.19511223900 07 19m 5770693451
NGC 7836Elliptical Galaxy+33 04 14.12221281700 08 01m 6246230388
NGC 79Elliptical Galaxy+22 33 59.0600 21 02m 838
NGC 80Lenticular Galaxy+22 21 26.1100 21 10m 865
NGC 81Lenticular Galaxy+22 22 58.37012221100 21 13m 2815876616
NGC 83Elliptical Galaxy+22 26 00.95999317100 21 22m 4103676671
NGC 85Interacting Spiral or Lenticular Galaxy+22 30 42.26569949800 21 25m 5485357367
NGC 86Lenticular Galaxy+22 33 23.20247149200 21 28m 5448168690
NGC 90Interacting Spiral Galaxy+22 24 00.1500 21 51m 409
NGC 91Star+22 22 05.61689688800 21 51m 6259810117
NGC 93Interacting Spiral Galaxy+22 24 29.18891479900 22 03m 2289923493
NGC 94Lenticular Galaxy+22 28 58.85384427900 22 13m 5333804821
NGC 96Lenticular Galaxy+22 32 46.70755504900 22 17m 7201713722
NGC 97Elliptical Galaxy+29 44 43.12435260600 22 30m 0163099256
SN 1885ASupernova Remnant+41 16 03.200 42 43m 12
SN 1986JSupernova Remnant+42 19 56.402 22 31m 33


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