M94 Group

The M94 Group (Canes I Group or Canes Venatici I Group) is a loose, extended group of galaxies located about 13 million light-years away^[5] in the constellations Canes Venatici and Coma Berenices. The group is one of many groups that lies within the Virgo Supercluster (i.e. the Local Supercluster)^[6] and one of the closest groups to the Local Group.

M94 Group
Observation data (Epoch J2000)
Constellation(s)	Canes Venatici & Coma Berenices
Right ascension	[1][2]
Declination	[1][2]
Brightest member	M94,[2] M106,[1]
Number of galaxies	16–24[1][2][3]
Other designations
NGC 4736 Group,[4] Canes Venatici I Group,[4] Canes Venatici Cloud,[4] LGG 291,[1] NOGG H 617,[2] NOGG P1 636,[2] NOGG P2 647[2]

Although the galaxies in this cluster appear to be from a single large cloud-like structure, many of the galaxies within the group are only weakly gravitationally bound, and some have not yet formed stable orbits around the center of this group. Instead, most of the galaxies in this group appear to be moving with the expansion of the universe.^[5][7]

Members

The table below lists galaxies that have been consistently identified as group members in the Nearby Galaxies Catalog,^[3] the Lyons Groups of Galaxies (LGG) Catalog,^[1] and the three group lists created from the Nearby Optical Galaxy sample of Giuricin et al.^[2]

Members of the M94 Group

Name	Type[8]	R.A. (J2000)[8]	Dec. (J2000)[8]	Redshift (km/s)[8]	Apparent Magnitude[8]
IC 3687	IAB(s)m	12h 42m 15.1s	+38° 30′ 12″	354 ± 1	13.7
IC 4182	SA(s)m	13h 05m 49.5s	+37° 36′ 18″	321 ± 1	13.0
M94	(R)SA(r)ab	12h 50m 53.0s	+41° 07′ 14″	308 ± 1	9.0
NGC 4144	SAB(s)cd	12h 09m 58.6s	+46° 27′ 26″	265 ± 1	12.1
NGC 4190	Im pec	12h 13m 44.8s	+36° 38′ 03″	228 ± 1	13.4
NGC 4214	IAB(s)m	12h 15m 39.2s	+36° 19′ 37″	291 ± 3	10.2
NGC 4244	SA(s)cd	12h 17m 29.6s	+37° 48′ 26″	244	10.9
NGC 4395	SA(s)m	12h 25m 48.9s	+33° 32′ 48″	319 ± 1	10.6
NGC 4449	IBm	12h 28m 11.9s	+44° 05′ 40″	207 ± 4	10.0
UGC 6817	Im	11h 50m 53.0s	+38° 52′ 49″	242 ± 1	13.4
UGC 7559	IBm	12h 27m 05.2s	+37° 08′ 33″	218 ± 5	14.2
UGC 7577	Im	12h 27m 40.9s	+43° 29′ 44″	195	12.8
UGC 7698	Im	12h 32m 54.4s	+31° 32′ 28″	331 ± 1	13.0
UGC 8320	IBm	13h 14m 27.9s	+45° 55′ 09″	192 ± 1	12.7

Additionally, NGC 4105 and DDO 169 are frequently but not consistently identified as members of this group in the references cited above.

The brightest member in this galaxy group is questionable and partly depends on the analysis used to determine group members. The LGG Catalog identifies M106 as part of this group, which would make it the brightest galaxy within the group.^[1] However, the other catalogs cited above do not identify M106 as a group member, in which case M94 would be the brightest galaxy within the group.^[2][3]

Canes Venatici Cloud

This galaxy group is sometimes erroneously called the Canes Venatici Cloud, a larger structure of which it is a member. A galaxy cloud is a supercluster substructure. The CVn Cloud used in this manner is identified by Tully and de Vaucoleurs.

See also

• M96 Group
• Sculptor Group
• Canes II Group (CVn II Group)