List of Andromeda's satellite galaxies
Table of known satellites
Andromeda Galaxy's satellites are listed here by discovery (orbital distance is not known). * It is uncertain whether it is a companion galaxy of the Andromeda Galaxy.

List of Andromeda's satellite galaxies

Section Title: Table of known satellites
Table Section Text: Andromeda Galaxy's satellites are listed here by discovery (orbital distance is not known). * It is uncertain whether it is a companion galaxy of the Andromeda Galaxy.

Name	Type	Distance from Sun (million ly)	Right Ascension**	Declination**	Absolute Magnitude	Magnitude	Mass-to-light ratio	Year discovered	Notes

M32	dE2	2.48	00h 42m 41.877s	+40° 51′ 54.71″	+9.2	1749

M110	dE6	2.69	00h 40m 22.054s	+41° 41′ 08.04″	+9.4	1773

NGC 185	dE5	2.01	00h 38m 57.523s	+48° 20′ 14.86″	+11	1787

NGC 147	dE5	2.2	00h 33m 12.131s	+48° 30′ 32.82″	+12	1829

Andromeda I	dSph	2.43	00h 45m 39.264s	+38° 02′ 35.17″	11.8	+13.2	31 ± 6	1970

Andromeda II	dSph	2.13	01h 16m 28.136s	+33° 25′ 50.36″	12.6	+13	13 ± 3	1970

Andromeda III	dSph	2.44	00h 35m 31.777s	+36° 30′ 04.19″	10.2	+10.3	19 ± 12	1970

Andromeda IV *	dIm?	22-24	00h 42m 32.798s	+40° 34′ 16.27″	+16.6	1972	Previously believed to be a satellite of Andromeda, but disproven in 2014

Andromeda V	dSph	2.52	01h 10m 16.952s	+47° 37′ 40.12″	9.6	+15.4	78 ± 50	1998

Pegasus Dwarf Spheroidal (Andromeda VI)	dSph	2.55	23h 51m 46.516s	+24° 34′ 55.69″	11.5	+14.5	12 ± 5	1998

Cassiopeia Dwarf (Andromeda VII)	dSph	2.49	23h 26m 33.321s	+50° 40′ 49.98″	13.3	+12.9	7.1 ± 2.8	1998

Andromeda VIII	dSph	2.7	00h 42m 06s	+40° 37′ 00″	+9.1	2003

Andromeda IX	dSph	2.5	00h 52m 52.493s	+43° 11′ 55.66″	8.3	+16.2	2004

Andromeda X	dSph	2.9	01h 06m 34.740s	+44° 48′ 23.31″	8.1	+16.2	63 ± 40	2005

Andromeda XI	dSph	00h 46m 20s	+33° 48′ 05″	7.3	2006

Andromeda XII	dSph	00h 47m 27s	+33° 22′ 29″	6.4	2006

Andromeda XIII	dSph	00h 51m 49.555s	+33° 00′ 31.40″	6.9	2006

Andromeda XIV	dSph	00h 41m 35.219s	+29° 41′ 45.87″	8.3	102 ± 71	2007

Andromeda XV	dSph	01h 14m 18.7s	+38° 07′ 02.9″	9.4	2007

Andromeda XVI	dSph	00h 59m 29.843s	+32° 22′ 27.96″	9.2	2007

Andromeda XVII	dSph	00h 37m 07s	+44° 19′ 20″	8.5	2008

Andromeda XVIII	dSph/Sm	00h 02m 15.184s	+45° 05′ 19.78″	2008

Andromeda XIX	dSph	00h 19m 32.1s	+35° 02′ 37.1″	9.3	2008

Andromeda XX	dSph	00h 07m 30.530s	+35° 07′ 45.94″	6.3	2008

Andromeda XXI	dSph	23h 54m 47.7s	+42° 28′ 15″	9.9	2009

Andromeda XXII	dSph	00h 27m 40s	+28° 05′ 25″	7.0	2009

Andromeda XXIII	dIrr	01h 29m 21.944s	+38° 43′ 05.97″	2011

Andromeda XXIV	01h 18m 30s	+46° 21′ 58″	2011

Andromeda XXV	00h 30m 08.9s	+46° 51′ 07″	2011

Andromeda XXVI	00h 23m 45.6s	+47° 54′ 58″	2011

Andromeda XXVII	00h 37m 27.1s	+45° 23′ 13″	2011

Andromeda XXVIII	dSph	22h 32m 41.449s	+31° 12′ 59.10″	2011

Andromeda XXIX	dIrr	23h 58m 55.440s	+30° 45′ 22.09″	2011

Tidal Stream Northwest (Tidal Stream E and F)	00h 20m 00s	+46° 00′ 00″	2009

Tidal Stream Southwest	00h 30m 00s	+37° 30′ 00″	2009

Triangulum Galaxy* (M33)	SA(s)cd	2.59	01h 33m 50.883s	+30° 39′ 36.54″	+6.27	1654?	Exact distance and relation to Andromeda uncertain

Sentence(s)

Andromeda IX is a satellite of the Andromeda Galaxy.

final_sentence: Andromeda IX is a satellite of the Andromeda Galaxy.