Distances of the Local Group member galaxies

Distances of the Local Group member galaxies, from various sources

The distances of the member galaxies of the Local Group are often not very wellknown. The following table gives values from various sources, in thousands of lightyears (kly; e.g., in our database, M31 is 2.9 million light years, thus 2900 times 1000 light years distant):

Galaxy         Ours  Hu36  SC20  Kauf  RASC  LGAA  TP    is5   GL   vdB94  Cam  vdB00 Mateo  Vi03
                                                                     
WLM            4200        5200              2850  3100  2000  2000  3064  3065  3100  3015  *
IC 10          4200:    ?  4200              4100  2850  4000  4000  4075  4075  2150  2690  2690
Cet Dw         3000:                                                 2530  2540        *
NGC 147        2400:       2380  2000  2000  2150  2000  2200  2200  2150  1920  2150  2365  2365
And III        2900:       2380  2250  2380              2200  2200  2360  2575  2480  2480  2480
NGC 185        2500:       2380  2000  2380  2150  1860  2200  2200  2020  2020  2150  2020  2020
M110           2900   680  2380  2250  2380  2100  2500  2200  2200  2360  2360  2480  2655  2660
And IV         2900:                   2380                         (2360)      (2480) 
M32            2900   680  2380  2250  2380  2150  2500  2200  2200  2360  2360  2480  2625  2625
M31            2900   680  2380  2250  2380  2180  2500  2200  2200  2360  2360  2480  2510  2650
And I          2900:       2380  2250  2580              2200  2200  2360  2575  2640  2625  2625
SMC             210    95   195   190   195   210   195   300   300   189   189   196   189   210
Scl dw          300:        280   270   280   280   360   200   200   254   254   293   258   258
LGS 3, Psc dw  3000:       2900        2380              3000  3000  2480  2480  2640  2640  2640
IC1613         2900:  900  2400  2100  2410  2410  2400  2500  2500  2495  2495  2350  2280  *
And V          2900:                                                       2640  2640        2640
And II         2900:       2380  2250  2380              2200  2200  2360  1915  2220  1710  1710
M33            3000   720  2930  2350  2180  2380  3600  2500  2500  2590  2590  2580  2740  2850
Phe dw         1600:                                                 1270  1270  1300  1450  1450
For dw          530:        420   650   420   550   420   500   500   427   427   456   450   450
UGCA 86                                            2050  2100        5900        
UGCA 92        3000:                                                11400  6500        4240  4240
LMC             179    85   165   170   165   165   175   200   200   160   160   163   160   170
Car dw          300:        550   500   550         280   300   300   284   284   326   329   329
CMA dw           25        
Leo A          7000:       7500              3600  5200  5000  5000  7500  7500  2250  2250  2250
Sex B          4000:                                                 4200  4240        4385  *
NGC 3109       4100:                                                 3900  4110        4075  *
Ant dw         4100:                                                       3750        4025  *
Leo I           880:        750   700   750   750   750   600   600   890   880   820   815   815
Sex A          4000:                         3300                    4200  4240        4695  *
Sex dw          300:                    280         280   300   300   257   293   293   280   280
Leo II          800:        750   700   750   750   750  4000   600   700   750   685   668   669
GR  8          5000:                               3260  4000  4000  3900  6500        5180  *
UMi dw          240:        240   220   240   220   220   220   330   205   225   196   215   215
Dra dw          280         260   220   260   220   240   240   300   248   248   260   267   267
Milky Way        28          28                                        26                26    26
SagDEG           88                                                          78    97    78    78
Sgr dw, SagDIG 4200        3600                          4000  4000  3600  3750  3850  3455  3460
N6822          1700:  530  1700  1630  1700  1530  2020  1700  1700  1760  1760  1630  1595  1600
Aqr dw         2000:       4900                          3000  3000  2600  2900  3100  2610  2610
IC5152         3000:       4900                    4900  2000  2000  5200  5200        5180  *
Tuc dw         3000:                                950   950              2930  2840  2870  *
UKS2323-326    4500:                                                 4200  4200        4305  *
And VII        2900:                                                       2480  2250        2250
Peg dw         6000:       4200                    5500  5000  5000  5700  5870  2480  3115  *
And VI         2900:                                                       2530  2540        2540
                                                                     
Nearby probable non-members:                                             
----------------------------                                             
SDIG                                                                 6500      
NGC 55         7000                                                                    4825
NGC 404        8000:                                                           
Maffei 1      10000:                                                11400      
Maffei 2      10000:
IC 342        10000:      ?
Cam A                                                                      6500
NGC 1569                                                             7500  7500
NGC 1560                                                             7500  7500
Argo dw       12000:                                                      11400
NGC 5237                                                            11400      
DDO 187                                                             14300      
NGC 6946      10000:      ?
2318-42

Sources:

Ours: The value used in our database
SC20: A. Hirshfeld and R.W. Sinnott, Sky Catalogue 2000.0, Sky Publishing 1985
Kauf: William J. Kaufmann III, Universe, Freeman 1987 (2nd ed), p. 514. Also lists Maffei 1 at 3.3 million light years.
RASC: RASC Observer's Handbook
LGAA: Le Grand Atlas de L'Astronomie, Encyclopedia Universalis, 1986. German edition: "Der große JRO Atlas der Astronomie"
TP: Tom Polakis, Observing Galaxies in the Local Group. Deep Sky, No. 36, p. 12. Reprinted in: David J. Eichler (ed.), Galaxies and the Universe, Kalmbach 1992.
is5: Klaus Veit, Galaxien der Lokalen Gruppe. interstellarum No. 5 (Nov 95-Jan 96)
GL: George Lake, Cosmology of the Local Group. The data are better accessible through Bill Arnett's table of Local Group galaxies
Cam: Cambridge Group of Mike Irwin
vdB94: Sidney van den Bergh, The Outer Fringes of the Local Group, AJ 107 (4): 1328-1332 (April 1994)
vdB00: Sidney van den Bergh, Updated Information on the Local Group, PASP 112 (770): 529-536 (April 2000)
Vi03: Ray Villard, The Local Group: Order out of Chaos. Astronomy, Vol. 31, No. 11, p. 38-43 (Nov 2003).

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Hartmut Frommert
Christine Kronberg
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Last Modification: November 1, 2004