NGC4284 / NGC4290 spiral galaxies in Ursa Major (Jean-Pierre Lees)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 4284 · NGC 4290

NGC4284 / NGC4290 spiral galaxies in Ursa Major, Jean-Pierre Lees

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NGC4284 / NGC4290 spiral galaxies in Ursa Major

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NGC4284 / NGC4290 spiral galaxies in Ursa Major

NGC4284 is a highly inclined spiral galaxy of type Sbc with a small, bright core and two bright, narrow spiral arms expanding into a broader spiral structure.
NGC4290 is a barred spiral galaxy of type SB(rs)ab with a bright, elongated core attached to a bright bar, itself attached to a pseuda ring especially bright where it meets the bar. The ring is surrounded by a broad, faint outer enveloppe, which has many knotty condensations.
NGC4284 and NGC4290 form a close pair but it is unlikely that the two galaxies are physically related. Their radial velocities are respectively 4298 km/s and 3127 km/s, corresponding to distances of 192 mly. and 140 mly. Angular diameters 2.6'x1.6' for NGC4284 and 2.3'x1.7' for NGC4290.
Another faint edge-on galaxy is visible 3.75' east of NGC4290.

AAA : Astronomes et Astrographes Amateurs

Galaxies
Photos astronomiques 2020

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NGC4284 / NGC4290 spiral galaxies in Ursa Major

NGC4284 / NGC4290 spiral galaxies in Ursa Major

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NGC4284 / NGC4290 spiral galaxies in Ursa Major

NGC4284 / NGC4290 spiral galaxies in Ursa Major

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