(or Mly; 3.34 Megaparsecs, or Mpc) was achieved in 2006. The Sculptor Galaxy is close enough that the tip of the red-giant branch (TRGB) method may also be used to estimate its distance. The estimated distance to Sculptor using this technique in 2004 yielded 12.8 ± 1.2 Mly (3.94 ± 0.37 Mpc). A weighted average of the most reliable distance estimates gives a distance of 11.4 ± 0.7 Mly (3.5 ± 0.2 Mpc). Satellite An international team of researchers has used the Subaru Telescope to identify a faint dwarf galaxy disrupted by NGC 253. The satellite galaxy is called NGC 253-dw2 and may not survive its next passage by its much larger host. The host galaxy may suffer some damage too if the dwarf is heavy enough. The interplay between the two galaxies is responsible for the disturbation in NGC 253's structure. See also Globular cluster NGC 288, located 1°.8 south-southeast of the Sculptor Galaxy. 2MASX J00482185-2507365 occulting pair, discovered while photographing NGC 253 References External links STScI news release: Hubble Probes the Violent Birth of Stars in Galaxy NGC 253 STScI news release: Behind a Dusty Veil Lies a Cradle of Star Birth SEDS – NGC 253 Starburst galaxies Intermediate spiral galaxies Sculptor (constellation) Sculptor Group NGC objects 02789 065b 17830923 UGCA objects Discoveries by Caroline Herschel