Andromeda Galaxy Article Index for
Andromeda
Website Links For
Andromeda
 

Information About

Andromeda Galaxy




  Epoch J2000
  Type SA(s)b{{cite web
  Title NASA/IPAC Extragalactic Database
  Work Results for Messier 31
  Url http://nedwwwipaccaltechedu/


  Dist Ly 254 ± 006 Mly <br>(778 ± 17 Kpc ){{cite journal
  Author I D Karachentsev, V E Karachentseva, W K Hutchmeier, D I Makarov
  Title A Catalog of Neighboring Galaxies
  Journal Astronomical Journal
  Year 2004
  Volume 127
  Pages 2031–2068
  Url http://adsabsharvardedu/abs/2004AJ1272031K


  Author Karachentsev, I D Kashibadze, O G
  Title Masses of the local group and of the M81 group estimated from distortions in the local velocity field
  Journal Astrophysics
  Year 2006
  Volume 49
  Issue 1
  Pages 3-18
  Url http://adsabsharvardedu/cgi-bin/nph-bib_querybibcode=2006Ap493K


  Author I Ribas, C Jordi, F Vilardell, EL Fitzpatrick, RW Hilditch, F Edward
  Title First Determination of the Distance and Fundamental Properties of an Eclipsing Binary in the Andromeda Galaxy
  Journal Astrophysical Journal
  Year 2005
  Volume 635
  Pages L37-L40
  Url http://adsabsharvardedu/abs/2005ApJ635L37R


  Author McConnachie, A W Irwin, M J Ferguson, A M N Ibata, R A Lewis, G F Tanvir, N
  Title Distances and metallicities for 17 Local Group galaxies
  Journal Monthly Notices of the Royal Astronomical Society
  Year 2005
  Volume 356
  Issue 4
  Pages 979-997
  Url http://adsabsharvardedu/cgi-bin/nph-bib_querybibcode=2005MNRAS356979M


  Author Jensen, Joseph B Tonry, John L Barris, Brian J Thompson, Rodger I Liu, Michael C Rieke, Marcia J Ajhar, Edward A Blakeslee, John P
  Title Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations
  Journal Astrophysical Journal
  Year 2003
  Date February 2003
  Volume 583
  Issue 2
  Pages 712-726
  Url http://adsabsharvardedu/abs/2003ApJ583712J


  Z −301 ± 1 Km / S
  Appmag V 44
  Size V 190&prime &times 60&prime
  Constellation Name Andromeda
  Absmag V −200
  Names <div style="width: 300px"> M 31, NGC 224, UGC 454,<br>


The Andromeda Galaxy (, also known as '''Messier 31''', '''M31''', or '''NGC 224'''; older texts often called it the ''Great'' ''Andromeda'' ''Nebula'' ) is a Spiral Galaxy approximately 2.5 million Light-year s away in the Constellation Andromeda . It is the nearest Spiral Galaxy to our own, the Milky Way .

2006 estimates put the mass of the Milky Way to be ~80% of the mass of Andromeda, which is estimated to be 7.1 Solar Mass es.