The Nearest Groups of Galaxies

This is a map of galaxies that lie within 20 million light years plotted onto the supergalactic plane. Nearly all of the nearby galaxies lie near this plane (the supergalactic coordinate system was originally invented because many nearby galaxy groups lie close to this plane.) All of the brightest and largest galaxies within 20 million light years are marked on this map together with many of the fainter dwarf galaxies.

Nearby galaxy groups

Digitized Sky Survey image

Left - NGC 1313, a bright but rather isolated galaxy classified as a barred spiral galaxy (although with very short and irregular spiral arms). This galaxy has recently (within the past billion years) collided with a satellite galaxy, and the material at the bottom-right of this picture is the remains of the satellite galaxy.



A list of Galaxies within 20 million light years

This is a list of all the brighter and larger galaxies within 20 million light years. Most of these distances have been determined by Igor Karachentsev and his colleagues at the Special Astrophysical Observatory in Russia who specialise in studying the neighbouring galaxy groups. Some of these galaxies still have uncertain distances, especially the Maffei group galaxies and also some galaxies in the far southern hemisphere which cannot be seen by Russian telescopes.

   1             2        3      4      5      6        7     8     9     10
Catalog         Equatorial    Supergalactic  Group     Blue  Type Size Distance
Name            Coordinates    Coordinates             Mag         kly    Mly
                RA       Dec     L°     B°
NGC45         00 13.9  -23 10  271.4  +2.9            11.03  Sc    35    14.2
NGC55         00 15.0  -39 12  256.3  -2.4  Sculptor   8.42  Irr   45     4.9
M31,NGC224    00 42.7  +41 16  336.2  12.5  Local      4.36  Sb   140     2.6
NGC247        00 47.2  -20 46  275.9  -3.7  Sculptor   9.67  Sc    50     8.1
NGC253        00 47.6  -25 18  271.6  -5.0  Sculptor   8.04  Sc   100    12.9
SMC           00 52.7  -72 50  224.2 -14.8  Local      2.70  Irr   15     0.2
NGC300        00 55.0  -37 42  259.8  -9.5  Sculptor   8.72  Sc    45     7.1
NGC404        01 09.5  +35 43  331.9   6.2            11.21  S0    10    10.8
M33,NGC598    01 33.8  +30 39  328.5  -0.1  Local      6.27  Sc    60     2.9
NGC625        01 35.1  -41 26  257.3 -17.7            11.71  Irr   20    13?
NGC784        02 01.3  +28 50  328.8  -6.3            12.23  Sd    30    16.3
Maffei I      02 36.3  +59 39  359.3   1.5  Maffei    14.5   E    >20    14.4
Maffei II     02 41.9  +59 36  359.6   0.8  Maffei    16.0   Sb   >25    12?
Dwingeloo 1   02 56.9  +58 55    0.0  -1.2  Maffei    18.8   Sb   >25    16.3
NGC1313       03 18.2  -66 30  228.0 -28.2             9.20  Sc    35    13.5
IC342         03 46.9  +68 05   10.6   0.4  Maffei     9.10  Sc    50     8.1
NGC1569       04 30.8  +64 50   11.9  -4.9  Maffei    11.86  Irr    5     5.8
NGC1560       04 32.8  +71 52   16.0   0.8  Maffei    12.16  Sc    35    12.6
LMC           05 23.6  -69 45  215.8 -34.1  Local      0.91  Irr   30     0.2
NGC2366       07 28.9  +69 12   29.5  -4.9  M81       11.43  Irr   25    11.2
NGC2403       07 36.8  +65 36   30.8  -8.3  M81        8.93  Sc    70    10.6
UGC4305,HoII  08 19.1  +70 43   33.3  -2.4  M81       11.10  Irr   25    10.9
NGC2976       09 47.3  +67 55   41.3  -0.8  M81       10.82  Sc    25    14.8
M81,NGC3031   09 55.6  +69 04   41.1   0.6  M81        7.89  Sa    90    12.0
M82,NGC3034   09 55.8  +69 41   40.7   1.1  M81        9.30  Irr   40    12.0
NGC3077       10 03.4  +68 44   41.9   0.8  M81       10.61  Irr   20    12.2
NGC3109       10 03.1  -26 10  137.9 -45.1  Local     10.39  Irr   25     4.1
IC2574        10 28.4  +68 25   43.6   2.3  M81       10.80  Irr   50    12.4
NGC3738       11 35.8  +54 31   59.6   1.8  Canes I   12.13  Irr   10    12.6
NGC4214       12 15.6  +36 19   79.0   1.6  Canes I   10.24  Irr   35    13.4
NGC4236       12 16.8  +69 28   47.1  11.4  M81       10.05  Sd    70    10.5
NGC4244       12 17.5  +37 48   77.7   2.4  Canes I   10.88  Sc    70    14.7
NGC4395       12 25.9  +33 32   82.3   2.7  Canes I   10.64  Irr   50    14.4
NGC4449       12 28.2  +44 05   72.3   6.2  Canes I    9.99  Irr   20    12.6
NGC4605       12 40.0  +61 37   55.5  12.0            10.89  Sc    30    16.9
M94,NGC4736   12 51.0  +41 07   76.2   9.5  Canes I    8.99  Sa    60    17.0
NGC4945       13 05.4  -49 28  165.2 -10.2  NGC5128    9.30  Sc    90    15?
NGC5023       13 12.2  +44 02   74.0  13.9  Canes I   12.85  Sc    30    17.6
NGC5102       13 21.9  -36 38  153.4  -4.1  NGC5128   10.35  S0    30    12.1
NGC5128       13 25.4  -43 01  159.8  -5.2  NGC5128    7.84  S0    90    12.4
NGC5204       13 29.6  +58 26   59.4  17.8            11.73  Irr   20    14.8
M83,NGC5236   13 37.0  -29 52  147.9   1.0  NGC5128    8.20  Sc    60    15.2
NGC5253       13 39.9  -31 38  149.8   1.0  NGC5128   10.87  Irr   15    11.7
Circinus      14 13.2  -65 20  183.1  -6.4            12.10  Sb    25    12?
ESO274-01     15 14.2  -46 49  171.6  10.3  NGC5128   11.70  Sc    55    16?
IC4662        17 47.1  -64 38  199.2   8.6            11.74  Irr    5     6.5
NGC6503       17 49.5  +70 08   33.1  34.6            10.91  Sc    35    17.0
NGC7793       23 57.9  -32 35  261.3   3.1  Sculptor   9.63  Sc    35    11.9
Column 1: Name of the galaxy.
Column 2: The Right Ascension in hours and minutes for epoch 2000.
Column 3: The declination in degrees and minutes for epoch 2000.
Column 4: Supergalactic longitude.
Column 5: Supergalactic latitude.
Column 6: The group the galaxy belongs to.
Column 7: The blue apparent magnitude of the galaxy.
Column 8: The galaxy type.  E=Elliptical; S0=Lenticular; Sa,Sb,Sc,Sd=Spiral; Irr=Irregular.
Column 9: Approximate diameter of the galaxy in thousands of light years.
Column 10: The distance to the galaxy in millions of light years from one of the references
           below.  The error on these distances can be as large as ±20%.

References:
Karachentsev I, Grebel E, Sharina M, Dolphin A, Geisler D, Guhathakurta P, Hodge P,
       Karachentseva V, Sarajedini A, Seitzer P, (2003), Distances to nearby galaxies
       in Sculptor, Astron Astrophys, 404, 93.
Karachentsev I, Sharina M, Dolphin A, E. Grebel K, Geisler D,Guhathakurta P, Hodge P,
       Karachentseva V, Sarajedini A, Seitzer P, (2003), Galaxy Flow in the Canes
       Venatici I Cloud. Astron Astrophys, 398, 467.
Méndez B, Davis M, Moustakas J, Newman J, Madore B, Freedman W, (2002), Deviations from
       the Local Hubble Flow. I. The Tip of the Red Giant Branch as a Distance Indicator,
       Astron J, 124, 213.
Davidge T, van den Bergh S, (2001), The Detection of Bright Asymptotic Giant Branch Stars
       in the Nearby Elliptical Galaxy Maffei 1. Astrophys J 553, L133.
Tonry J, Dressler A, Blakeslee J, Ajhar E, Fletcher A, Luppino G, Metzger M, Moore C,
       (2001), The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and
       Distances. Astrophys J, 546, 681.
Ferrarese L, et al, (2000), The HST Key Project on the Extragalactic Distance Scale XXVI.
       The Calibration of Population II Secondary Distance Indicators and the Value of 
       the Hubble Constant. Astrophys J, 529, 745.
Drozdovsky I., Karachentsev I., (2000), Photometric distances to six bright resolved
       galaxies. Astron Astrophys Supp, 142, 425.
Karachentsev I, Makarov D, Huchtmeier W, (1999), HI properties of nearby galaxies from a 
       volume-limited sample.  Astron Astrophys Supp, 139, 97.
Makarova L, (1999), Multi-colour photometry of nearby dwarf galaxies, 
        Astron Astrophys Supp, 139, 491.  
Karachentsev I, Drozdovsky I, (1998), Distances to five resolved galaxies in the Canes
       Venatici cloud, Astron Astrophys Supp, 131, 1.
Makarova L, Karachentsev I, (1998) CCD imaging of twenty nearby isolated irregular 
        galaxies.  Astron Astrophys, Supp, 133, 181.
Jerjen H, Freeman K, Binggeli B, (1998), SBF distances to Dwarf Elliptical Galaxies in 
        the Sculptor Group. Astron J, 116, 2873.
Karachentsev I, Sharina M, (1997), Distance to the spiral galaxy NGC 6503 situated in
       the Local Void. Astron Astrophys, 324, 457.
Makarova L, Karachentsev I, Georgiev, Ts., (1997), Distances to six irregular galaxies
       in the Canes Venatici cluster from the brightest stars, Astron Letters, 23, 378.
Schmidt K., Karachentsev I, (1996), Nearby galaxies. IV. The global Hubble parameter and
       the dispersion of the Hubble relation. Astron Nachr, 317, 197.
Schmidt K, Priebe A, Boller T, (1993), Nearby Galaxies. Astron Nachr 314, 371.
Heydari-Malayeri M, Melnick J, Martin J, (1990), Star formation in the irregular galaxy 
        IC 4662. Astron Astrophys, 234, 99.
Digitized Sky Survey image
Above is a black and white photograph of the centre of the M81 group showing five of the major galaxies in this group.
The Virgo supercluster Back to the Virgo Supercluster page