M105 = NGC3379 ( 10h 47.8m +12°35´, 9.3 mag. )
This elliptical galaxy in Leo was discovered by Mechain in March 1781.
M105 is the brightest member of a group of galaxies in the constellation of Leo known as the M96 group. It is an elliptical galaxy located about 38 million light-years from Earth. This object was discovered by Pierre Mechain in 1781.
Leo harbors a group of galaxies, including two spirals (M95 and M96) and an elliptical (M105), in its central region. With binoculars, the cores of the spirals, but not their faint arms, can be distinguished.
M105 (NGC 3379) is a much dimmer galaxy to the north-north-east of M96. Along with NGC 3384 and NGC 3389, which lie just to the east, this object forms a small triangle of galaxies. Then there is NGC 2903, which somehow escaped Messier's telescope.
Six other discoveries are "honorary Messier objects" added to the list in the 20th century: M104, M105, M106, M107, M108, M109.
He also discovered NGC 5195, the companion galaxy that makes M51 (AKA the Whirlpool Galaxy) so distinctive.
M65 (spiral galaxy)
M66 (spiral galaxy)
M95 (spiral galaxy)
M96 (spiral galaxy)
M105 (elliptical galaxy)
This is one of the 13 constellations of the Zodiac.
M65 (spiral galaxy)
M66 (spiral galaxy)
M95 (spiral galaxy)
M96 (spiral galaxy)
M105 (elliptical galaxy)
This is one of the 13 constellations of the Zodiac.
Messier 96 (NGC 3368) is an intermediate spiral galaxy, the brightest one in the M96 Group, which also includes M95, M105 and nine other galaxies. Messier 105 (NGC 3379) is an elliptical galaxy with a confirmed supermassive black hole ...
The second-brightest star (Beta Leo) is Denebola (meaning "tail of the lion"), and the third-brightest star (Gamma 1 Leo) is Algieba (meaning "forehead"). The spiral galaxies M65, M66, M95, M96, and the elliptical galaxy M105 are nearby.
The final published version appeared again in Connaissance des Temps for 1784 (published in 1781) which contained objects through M103. Messier later added M104, and objects that were associated with some of his findings received numbers M105-M110 ...
Of the seven other objects, M104 was added in 1921 by Camilille Flammarion who found it on Messier's copy of his 1781 catalogue; M105 through M107 were observed by Messier's chief comet hunting rival, ...
Messier Object 105 - M105
Messier Object 106 - M106
Messier Object 107 - M107
Messier Object 108 - M108
Messier Object 109 - M109
Messier Object 110 - M110
The Messier Marathon
The Week Long Messier Marathon ...
 See also: Galaxy, M96, Leo, Telescope, M95
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