The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, known as the NGC objects. It is one of the largest comprehensive catalogues, as it includes all types of deep space objects, including galaxies, star clusters, emission nebulae and absorption nebulae.
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NGC 4722
NGC 4722 is a lenticular galaxy in the constellation of Corvus. Its velocity with respect to the cosmic microwave background is 1647 ± 25 km/s, which corresponds to a Hubble distance of 79.3 ± 5.7 Mly (24.3 ± 1.75 Mpc). In addition, two non-redshift measurements give a distance of 89.2 ± 39.3 Mly (27.35 ± 12.05 Mpc). It was discovered by German astronomer Wilhelm Tempel in 1882. It was also observed by French astronomer Guillaume Bigourdan on 15 April 1895 and listed in the Index Catalogue as IC 3833. NGC 4722 and NGC 4723 are listed together as Holm 471 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.
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Wikipedia Page: NGC 4722
NGC 4722 at In-The-Sky website