NGC 4900 - (R')SB(s)cd

NGC 4900

De Vaucouleurs Atlas Type: (R')SB(s)cd

Filter: g

Telescope: SDSS 2.5-m
North up , East left
Field Dimensions: 2.7 x 2.0 arcminutes

RC3 Type: SB(rs)c
Surface Brightness Range Displayed: 18.0-25.0 mag per square arcsec
Absolute Blue Magnitude: -19.1
Elmegreen Spiral Arm Class: AC 3

De Vaucouleurs Atlas Description:

This small spiral has an exceptionally well-defined bar and faint, patchy arms that appear to form a ring-like structure. de Vaucouleurs classified this feature as an inner pseudoring , but here we interpret it as an outer pseudoring . The feature is very patchy and rather ill-defined.