NGC 7154 is a peculiar barred spiral galaxy in the constellation of Piscis Austrinus. Its velocity with respect to the cosmic microwave background is 2,356±18 km/s, which corresponds to a Hubble distance of 105.3 ± 7.5 Mly (32.3 ± 2.3 Mpc). However, eight non-redshift measurements give a closer mean distance of 89.29 ± 16.04 Mly (27.375 ± 4.918 Mpc). It was discovered by British astronomer John Herschel on 23 September 1834.

NGC 7154 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.

IC 5156 group

NGC 7154 is a member of the IC 5156 group (also known as LGG 450). This group contains 14 galaxies, including NGC 7163[fr], NGC 7172, NGC 7173[fr], NGC 7174[fr], NGC 7176[fr], NGC 7187[fr], IC 5156[fr], and six galaxies from the ESO catalogue.

Supernova

One supernova has been observed in NGC 7154:

  • SN 2026hze (TypeII, mag. 16.1) was discovered by ASAS-SN on 30 March 2026.

See also

External links

  • Media related to NGC 7154 at Wikimedia Commons
  • NGC 7154 on WikiSky: , , , , , , , ,