| DATE | 20 May 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 UHC filter |
| EXPOSURE | binning 1: composite image, 10min |
| IMAGE SIZE (ARCMIN) | ~12 |
| LIGHT TRAVEL TIME (Derived Redshift. Millions Light Years) | NGC3640 = 72 NGC3641 = 94 2MASX J11210149+0310565 = 1340 2MASX J11205902+0311385 = 821 SDSS J112111.78+031131.5 = 1846 |
| MAGNITUDE | NGC3640 = 11.36 NGC3641 = 14.1 2MASX J11210149+0310565 = 17.6 2MASX J11205902+0311385 = 17.6 SDSS J112111.78+031131.5 = 18.7 |
| POSITION RA-DEC J2000 | NGC3640 = 11:21:06.80 +03:14:05.0 NGC3641 = 11:21:08.80 +03:11:41.0 2MASX J11210149+0310565 = 11:21:01.50 +03:10:57.0 2MASX J11205902+0311385 = 11:20:59.00 +03:11:39.0 SDSS J112111.78+031131.5 = 11:21:11.80 +03:11:32.0 |
| POSITION ANGLE: | 100 |
| Rotation Velocity km/s | |
| Size (Light Years) | |
| DETAILS | NGC3640 is an elliptical while it's neighbour, NGC3641 is classed as a peculiar elliptical galaxy, 2MASX J11210149+0310565, 2MASX J11205902+0311385 and SDSS J112111.78+031131.5 are all distant galaxies. |
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