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NGC 4782

NGC4782 is an elliptical galaxy in the constellation of Corvus. Its velocity with respect to the cosmic microwave background for is , which corresponds to a Hubble distance of . However, nine non-redshift measurements give a closer distance of . It was discovered by German-British astronomer William Herschel on 27 March 1786.

NGC 4782 along with are listed together as Holm485 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937. They are also listed as VV201 in the Vorontsov-Vel'yaminov Interacting Galaxies catalogue. However, since NGC 4782 is about farther away than NGC 4783 (using Hubble distance), the grouping is purely optical.

The SIMBAD database lists NGC4782 as a radio galaxy, i.e. it has giant regions of radio emission extending well beyond its visible structure.

Supernovae

Two supernovae have been observed in NGC 4782:

  • SN1956B (type unknown, mag. 18.6) was discovered by Fritz Zwicky on 8 April 1956.
  • SN2015B (TypeIa, mag. 15) was discovered by the Italian Supernovae Search Project on 5 January 2015.

See also

References

External links