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NGC 4045
NGC 4045 is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 2,334±25 km/s, which corresponds to a Hubble distance of 112.3 ± 8.0 Mly (34.42 ± 2.44 Mpc). However, 15 non-redshift measurements give a closer mean distance of 100.24 ± 2.77 Mly (30.733 ± 0.849 Mpc). It was discovered by German-British astronomer William Herschel on 20 December 1784. It was also observed by German astronomer Heinrich Louis d'Arrest on 10 April 1863, causing it to be listed a second time in the New General Catalogue, as NGC 4046.
NGC 4045 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms. Also, the galaxy is listed as having an active galactic nucleus, and as being a radio galaxy.
NGC 4045 and neighboring galaxy PGC 38033 (also known as NGC 4045A) are listed together as Holm 320 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937. However, since PGC 38033 is over twice as distant (~81.6 Mpc) as NGC 4045, the grouping is purely an optical alignment.
One supernova has been observed in NGC 4045:
One luminous blue variable has been observed in NGC 4045:
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NGC 4045
NGC 4045 is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 2,334±25 km/s, which corresponds to a Hubble distance of 112.3 ± 8.0 Mly (34.42 ± 2.44 Mpc). However, 15 non-redshift measurements give a closer mean distance of 100.24 ± 2.77 Mly (30.733 ± 0.849 Mpc). It was discovered by German-British astronomer William Herschel on 20 December 1784. It was also observed by German astronomer Heinrich Louis d'Arrest on 10 April 1863, causing it to be listed a second time in the New General Catalogue, as NGC 4046.
NGC 4045 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms. Also, the galaxy is listed as having an active galactic nucleus, and as being a radio galaxy.
NGC 4045 and neighboring galaxy PGC 38033 (also known as NGC 4045A) are listed together as Holm 320 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937. However, since PGC 38033 is over twice as distant (~81.6 Mpc) as NGC 4045, the grouping is purely an optical alignment.
One supernova has been observed in NGC 4045:
One luminous blue variable has been observed in NGC 4045: