Observer's guide
About NGC 55
NGC 55 (C72) is catalogued as a galaxy in Sculptor. Its J2000 position is RA 00:14:54, Dec -39:11:48, corresponding to 3.7233 degrees RA and -39.1966 degrees Dec. The local catalogue places it about 4,200,000 light-years away. Its referenced angular extent is approximately 32.36 by 3.98 arcminutes.
Observing tips
This is rated as a hard target at magnitude 7.9. It is associated with autumn observing, with midnight placement typically strongest around September. From 52 degrees north its theoretical meridian altitude is about 0 degrees; local horizons and the live altitude chart determine the practical window.
A small telescope under reasonably dark skies is a good starting point; use the live altitude chart to choose its highest point.
What to expect
The SIMBAD classification for the matched source is rG. SIMBAD records the morphology as Irr. A published radial velocity value is 129 km/s. The SIMBAD record currently connects it to 831 bibliographic references.
Its roughly 32.4 arcminute span suits a medium field of view. Use the listed 32.36 by 3.98 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.