| DATE | 6 Mar 2013 |
| TELESCOPE OPTICS | 508 mm mirror f.4. ccd sony ICX285AL 1360 x 1024px 6.45 x 6.45µm |
| EXPOSURE | binning 1: composite image, 17min |
| IMAGE SIZE (ARCMIN) | ~13 |
| LIGHT TRAVEL TIME (Derived Redshift. Millions Light Years) | 152 |
| MAGNITUDE | 11.9 |
| POSITION RA-DEC J2000 | 13:04:14.40 -10:20:23.0 |
| POSITION ANGLE: | 5 |
| Rotation Velocity km/s | |
| Size (Light Years) | |
| DETAILS | NGC4939 is a fine three armed spiral galaxy with Seyfert-2 activity. Supernova SN 1968X was discovered here. |
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