| OBJECT | NGC3557 in Centaurus |
| DATE | 25 Jan 2012 |
| TELESCOPE OPTICS | 508 mm mirror f.4 effective f/4.6 with paracorr2. ccd sony ICX285AL 1360 x 1024px 6.45 x 6.45µm |
| EXPOSURE | binning 1: composite image, 1200seconds |
| IMAGE SIZE (ARCMIN) | ~18 |
| DISTANCE Millions Light Years |
NGC3557 = 138 |
| MAGNITUDE | NGC3557 = 11.4 |
| POSITION RA-DEC J2000 | NGC3557 = RA: 11h09m 57.7s DE:-37°32' 21" |
| POSITION ANGLE: | NGC3557 = 32 |
| DETAILS | NGC3557 is an elliptical galaxy. many other galaxies in this area take it's name as a prefix since it is the brightest. |
