NGC 7466 explained

NGC 7466
Constellation Name:Pegasus
Epoch:J2000
Type:Sb[1]
Dist Ly:NaNMpc
Z:0.025044
H Radial V:7508 ± 3 km/s
Appmag V:13.5
Size V:1.5' x 0.5'
Size:~42.32kpc (estimated)

NGC 7466 is a spiral galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 7160 ± 25 km/s, which corresponds to a Hubble distance of 105.60 ± 7.40 Mpc (∼344 million light-years). It was discovered by French astronomer Édouard Stephan on 20 September 1873.[2] It was independently rediscovered by the French astronomer Guillaume Bigourdan on 19 November 1895 and listed as IC 5281 in the Index Catalogue.

NGC 7466 is listed as a Seyfert II Galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.

NGC 7466 is a galaxy with a nucleus that has excessive amounts of ultraviolet emissions, and is thus listed in the Markarian Galaxy Catalog as Mrk 1127.

One supernova has been observed in NGC 7466: SN 2023uu (type Ia, mag 20.1).[3]

See also

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 7466 . 7 August 2024.
  2. https://cseligman.com/text/atlas/ngc74a.htm#7466 Celestial Atlas entry for NGC 4734.
  3. https://www.wis-tns.org/object/2023uu Transient Name Server entry for SN 2023uu.