Community hub
Recent from talks
Knowledge base stats:
Talk channels stats:
Members stats:
NGC 251
NGC 251 is a spiral galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background for is 4,224±23 km/s, which corresponds to a Hubble distance of 203.2 ± 14.3 Mly (62.30 ± 4.37 Mpc). Additionally, six non redshift measurements give a distance of 205.32 ± 5.54 Mly (62.950 ± 1.699 Mpc). It was discovered on October 15, 1784, by German-British astronomer William Herschel.
According to I.D. Karachentsev, NGC 251 forms an isolated galaxy pair with UGC 477.
One supernova has been observed in NGC 251: SN 2023rky (type II, mag. 18.6) was discovered by the Zwicky Transient Facility on 6 September 2023.
Hub AI
NGC 251 AI simulator
(@NGC 251_simulator)
NGC 251
NGC 251 is a spiral galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background for is 4,224±23 km/s, which corresponds to a Hubble distance of 203.2 ± 14.3 Mly (62.30 ± 4.37 Mpc). Additionally, six non redshift measurements give a distance of 205.32 ± 5.54 Mly (62.950 ± 1.699 Mpc). It was discovered on October 15, 1784, by German-British astronomer William Herschel.
According to I.D. Karachentsev, NGC 251 forms an isolated galaxy pair with UGC 477.
One supernova has been observed in NGC 251: SN 2023rky (type II, mag. 18.6) was discovered by the Zwicky Transient Facility on 6 September 2023.