Hoag's Object - (R)SA0/a or (R)E0

Hoag's Object

De Vaucouleurs Atlas Type: (R)SA0/a or (R)E0

Filter: V

Telescope: HST 2.4-m
North left , East down
Field Dimensions: 1.3 x 1.0 arcminutes

RC3 Type: ----
RSA Type: -----
Surface Brightness Range Displayed: 16.0-26.0 mag per square arcsec
Absolute Blue Magnitude: -20.4

De Vaucouleurs Atlas Description:

This remarkable object, once called the ``perfect ringed galaxy" by Brosch (1985), was shown by Schweizer et al. (1987) to be an E0 galaxy that possibly accreted or disrupted a gas-rich companion. Alternatively, Wakamatsu (1990) considered that galaxies like Hoag's Object could be barred or ex-barred galaxies