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 2305
NGC 2305 is an elliptical galaxy in the constellation of Volans. Its velocity with respect to the cosmic microwave background is 3605 ± 21 km/s, which corresponds to a Hubble distance of 53.17 ± 3.75 Mpc (∼174 million light-years). It was discovered by British astronomer John Herschel on 30 November 1834. The galaxy NGC 2305 forms a physical pair with NGC 2307, collectively named RR 143, with a distance of at least 51 kpc between the galaxies. Two supernovae have been observed in NGC 2305: SN 2011fn (type I, mag 17.9) was discovered by Stu Parker on 29 June 2011. There is some uncertainty about this supernova; it was classified as either type Ia or type Ic, and it is possible that the host galaxy of this supernova was not NGC 2305, but instead the nearby galaxy 2MASS J06483060-6415588. SN 2023txv (type Ia, mag 17.4) was discovered by ATLAS on 3 October 2023.
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Wikipedia Page: NGC 2305
NGC 2305 at In-The-Sky website