[4] A small, smooth, dark feature has been observed running across the nucleus in images by the Hubble Space Telescope.

Its projected size is 0.3 kpc and its shape suggests it is the near side of a small dust disk.

They share a common envelope,[6] however, despite their close position, no tidal features like tails or bridges have been observed.

[7] A stellar bridge has been detected between the galaxy pair and NGC 541,[8] which lies 4.5 arcminutes to the southwest (projected distance circa 100 kpc).

The gas distribution appears symmetric, without evidence of tails, indicating its relatively low velocity, and thus it has been identified as the centre of the cluster, with NGC 541 and NGC 545 moving towards it.