M96 Group
Encyclopedia
The M96 Group is a group of galaxies in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....

 Leo
Leo (constellation)
Leo is one of the constellations of the zodiac. Its name is Latin for lion. Its symbol is . Leo lies between dim Cancer to the west and Virgo to the east.-Stars:...

. This group contains between 8 and 24 galaxies, including three Messier object
Messier object
The Messier objects are a set of astronomical objects first listed by French astronomer Charles Messier in 1771. The original motivation of the catalogue was that Messier was a comet hunter, and was frustrated by objects which resembled but were not comets...

s. The group is one of many groups that lies within the Virgo Supercluster
Virgo Supercluster
The Virgo Supercluster or Local Supercluster is the irregular supercluster that contains the Virgo Cluster in addition to the Local Group, which in turn contains the Milky Way and Andromeda galaxies. At least 100 galaxy groups and clusters are located within its diameter of 33 megaparsecs...

 (i.e. the Local Supercluster).

Members

The table below lists galaxies that have been consistently identified as group members in the Nearby Galaxies Catalog, the survey of Fouque et al., the Lyons Groups of Galaxies
Lyons Groups of Galaxies
Lyons Groups of Galaxies are a catalog of nearby groups of galaxies that was created from the sample of galaxies complete up to the limiting apparent magnitude Bo=14.0 with a recession velocity smaller than 5500 km/s....

 (LGG) Catalog, and the three group lists created from the Nearby Optical Galaxy sample of Giuricin et al..

Members of the M96 Group
Name Type R.A.
Right ascension
Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:...

 (J2000)
Dec.
Declination
In astronomy, declination is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is comparable to geographic latitude, but projected onto the celestial sphere. Declination is measured in degrees north and...

 (J2000)
Redshift
Redshift
In physics , redshift happens when light seen coming from an object is proportionally increased in wavelength, or shifted to the red end of the spectrum...

 (km/s
Second
The second is a unit of measurement of time, and is the International System of Units base unit of time. It may be measured using a clock....

)
Apparent Magnitude
Apparent magnitude
The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...

M95
Messier 95
Messier 95 is a barred spiral galaxy about 38 million light-years away in the constellation Leo. It was discovered by Pierre Méchain in 1781, and catalogued by Charles Messier four days later.-Nucleus:...

SB(r)b 778 ± 4 11.4
M96
Messier 96
Messier 96 is an intermediate spiral galaxy about 31 million light-years away in the constellation Leo. It was discovered by Pierre Méchain in 1781.-M96 Group:...

SAB(rs)ab 897 ± 4 10.1
M105
Messier 105
Messier 105 is an elliptical galaxy in the constellation Leo. Messier 105 is known to have a supermassive black hole.-History:...

E1 911 ± 2 10.2
NGC 3299 SAB(s)dm 641 ± 6 13.3
NGC 3377 E5.5
}
|
| 665 ± 2
| 11.2
|-
| NGC 3384
NGC 3384
NGC 3384 is a Elliptical galaxy in the constellation Leo. The Galaxy was discovered by Herschel in 1784. The high age of the stars in the central region of NGC 3384 was confirmed after analysis of their color...


| SB(s)0
|
|
| 704 ± 2
| 10.9
|-
| NGC 3412
| SB(s)0
|
|
| 841 ± 2
| 11.5
|-
| NGC 3489
| SAB(rs)0
|
|
| 677 ± 2
| 11.1
|-
|}

Nearby groups

The Leo Triplet
Leo Triplet
The Leo Triplet is a small group of galaxies about 35 million light-years away in the constellation Leo. This galaxy group consists of the spiral galaxies M65, the M66, and the NGC 3628.-Members:...

, which includes the spiral galaxies M65
Messier 65
Messier 65 is an intermediate spiral galaxy about 35 million light-years away in the constellation Leo. It was discovered by Charles Messier in 1780. M65, M66, and NGC 3628 comprise the famous Leo Triplet, a small group of galaxies.-Discovery:M65 was discovered by Charles Messier and included in...

, M66
Messier 66
Messier 66 is an intermediate spiral galaxy about 36 million light-years away in the constellation Leo. It was discovered by Charles Messier in 1780...

, and NGC 3628
NGC 3628
NGC 3628, also known as Sarah's Galaxy, is an unbarred spiral galaxy about 35 million light-years away in the constellation Leo. It was discovered by William Herschel in 1784. It has an approximately 300,000 light-years long tidal tail. NGC 3628 along with M65 and M66 form the famous Leo...

, is located physically near the M96 Group. Some group identification algorithms actually identify the Leo Triplet at part of the M96 Group. The two groups may actually be separate parts of a much larger group..
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