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Closer to Denebola, the Leo Triplet consists of the bright galaxies Messier 65, Messier 66 and NGC 3628.

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This system is for official authorized use only. Pinwheel Galaxy has an apparent magnitude of 7.86 and lies at a distance of 20.9 million light years from Earth. M-101 is tidally interacting with NGC 5474, NGC 5477, and Ho IV. It is fairly easy to find because the "pointer stars" of the Big Dipper point to Leo. A later extension to the Hubble classification was the inclusion of irregular galaxies in two classes: Irr I included irregular galaxies that showed some hint of organised structure (such as the Large and Small Magellanic Clouds), while Irr II were those irregulars that were completely disorganised. For more information including contact details, click here.

A magnitude 8.9 spiral galaxy (type SAB(s)b?)

The cloud was discovered by radio astronomers in 1983.

Shown here is a spiral galaxy known as NGC 3455, which lies some 65 million light-years away from us in the constellation of Leo (The Lion).

M32 is

An E0 galaxy has an ellipticity of 0, and an E7 galaxy has an ellipticity of 0.7, so to determine the Hubble classification, you multiply the ellipticity by 10.
M-101 covers a … In Hubble’s scheme, which is based on the optical appearance of galaxy images on photographic plates, galaxies are divided into three general classes: ellipticals, spirals, and irregulars. This feature mostly contains older stars.

Galaxy - Galaxy - Types of galaxies: Almost all current systems of galaxy classification are outgrowths of the initial scheme proposed by the American astronomer Edwin Hubble in 1926. Spiral galaxy M100. their own classification schemes. This is a 70 minute exposure with an SBIG STL-1301E CCD camera thru Kopernik's 20-inch RC Cassegrain working at F/5.2. Some are simple, while others are very complex in structure. It is 32 billion light-years / 9.8 billion parsecs away from us. It has a visual magnitude of 10.8 and is a member of the Leo II Group (NGC 3607 Group) of galaxies.

Galaxies are classified into different types according to their structure and appearance. Below is a list of notable spiral galaxies with their own articles.

It has the designation NGC 3031 in the New General Catalogue. At a distance of 900,000 light years, it is thought to be the furthest of the Milky Way's satellite galaxies (i.e., it is in orbit around our galaxy). NGC 3607 is a spiral galaxy in Leo.

Spiral Galaxy M-101 (NGC 5447) in Ursa Major.

Specifically, an E0 galaxy appears circular (like M87), and in general for axial ratio b/a the number is 10(1-b/a). Spiral galaxies have three main components: a bulge, disk, and halo (see right).

Classification of an elliptical galaxy image is straightforward, because there is so little structure present. A dwarf galaxy is a small galaxy composed of about 100 million up to several billion stars, as compared to the Milky Way's 200–400 billion stars. On the right, you can see the basic spiral shapes illustrated, alongside images of actual barred and unbarred spirals.

The classification column refers to the galaxy morphological classification used by astronomers to describe galaxy structure. Figure 3: Hubble Classification of Galaxies.
Our privacy policy is here. Messier 101 (M101), also known as the Pinwheel Galaxy, is a spiral galaxy located in the constellation Ursa Major, the Great Bear.

Spiral galaxies.

It is estimated that the galaxy formed just around 400 million years after the Big Bang. © Dominic Ford 2011–2020. Leo I is a dwarf spheroidal galaxy, so named for its small size and oblong shape. Pierre Mechain discovered this large face-on spiral galaxy in 1781. The disk forms arm structures. Galaxies are very important fundamental building blocks of the Universe.

The galaxy is located at the distance of about 180 kpc from the Sun and moves away from the Sun with the velocity of about 173 km/s.

Note that it is a little more flattened or squashed than an E0 galaxy would be (compare with image 11). This figure shows Edwin Hubble’s original classification of galaxies.

NGC 3628 is an unbarred spiral with a visual magnitude of 10.2 approximately 35 million light years away. M65 and M66 are intermediate spiral galaxies with apparent magnitudes of 10.25 and 8.9, located 35 and 31 million light years away. Most galaxies are between 1.000 to 100.000 parsecs / 3.000 to 300.000 light-years in diameter. Messier 95 (M95, NGC 3351) is a beautiful barred spiral galaxy situated in constellation Leo, and one of the fainter Messier Objects.

Pierre Méchain discovered M95, together with M96, March 20, 1781.

The oldest and farthest galaxy ever discovered is an irregular type of galaxy called GN-z11. 1) M32-- This is an E2 elliptical galaxy. On the right is the M96 subgroup and on the left is the M66 subgroup which are connected to each other via NGC 3489 which lies between them. The field of view is about 20x24 arc minutes.

Types E0-E7 are recognized, where the number gives the projected axial ratio.