NGC 4560 , NGC 4535 and friends (xlong)

NGC 4560 , NGC 4535 and friends

NGC 4560 is a spiral galaxy located approximately 55 million light-years from the Solar System in the Virgo constellation.The galaxy is seen nearly edge-on. The morphological classification is SAB(s)0°, which indicates a lenticular structure with a weak bar across the center and pure spiral arms without a ring.It belongs to the Virgo cluster and is one of the brightest known lenticular galaxies. In the galaxy's outer halo, globular cluster orbital velocities indicate abnormal poverty of dark matter: only 43±18% of the mass within 5 effective radii.
The inner nucleus of this galaxy displays a rise in stellar orbital motion that indicates the presence of a central dark mass. The best fit model for the motion of molecular gas in the core region suggests there is a supermassive black hole with about 4.5+4.2−3.0×108 (450 million) times the mass of the Sun. This is the first object to have its black-hole mass estimated by measuring the rotation of gas molecules around its centre with an Astronomical interferometer.

NGC 4535 is a barred spiral galaxy located some 54 million light years from Earth in the constellation Virgo. It is a member of the Virgo Cluster of galaxies and is located 4.3° from Messier 87. The galactic plane of NGC 4535 is inclined by an angle of 43° to the line of sight from the Earth. The morphological classification of NGC 4535 in the De Vaucouleurs system is SAB(s)c, which indicates a bar structure across the core (SAB), no ring (s), and loosely wound spiral arms (c). The inner part of the galaxy has two spiral arms, which branch into multiple arms further away. The small[6] nucleus is of type HII, meaning the spectrum resembles that of an H II region.

In the background of this image, we can see dozens of small galaxies of different shapes and sizes, but unfortunately I do not know their names.

Original
Final
C

	Distinct awarded users	Total awarded images
Image of the day
Top picks
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Advanced success
Started	...
Astrometry.net job	5742743
PixInsight job	4XONBDB64CDRBCI5JZYP6H8QDJJKHI5B
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h34m08s.546
RA (top/left)	12h32m45s.981
RA (top/right)	12h32m47s.940
RA (bottom/right)	12h35m31s.349
RA (bottom/left)	12h35m29s.495

Dec (center)	+07°58′15″.58
Dec (top/left)	+08°26′14″.41
Dec (top/right)	+07°29′52″.96
Dec (bottom/right)	+07°30′09″.89
Dec (bottom/left)	+08°26′37″.60

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