NGC1645 and NGC1643 Galaxies in Eridanus
| DATE | 7 Dec 2013 |
| TELESCOPE OPTICS | 508 mm mirror f.4 . effective f4.6 with paracorr2. ccd
Kodak KAF8300
3326 x 2504px 5.4 x 5.4µm |
| EXPOSURE | binning 2: composite image, 17 min |
| IMAGE SIZE (ARCMIN) | 21 |
| LIGHT TRAVEL TIME (Derived Redshift. Millions Light Years) | NGC1645 = 215 NGC1643 = 214 2MASX J04440559-0525467 = 210 |
| MAGNITUDE | NGC1645 = 13.88 NGC1643 = 14 2MASX J04440559-0525467 = 16.4b |
| POSITION RA-DEC J2000 | NGC1645 = 04:44:06.40 -05:27:56.0 NGC1643 = 04:43:43.90 -05:19:10.0 2MASX J04440559-0525467 = 04:44:05.60 -05:25:47.0 |
| POSITION ANGLE: | |
| Rotation Velocity km/s | NGC1645 = no data NGC1643 = no data |
| Size (Light Years) | NGC1645 = 143,000 (RC3 D_25; R_25 (blue)) NGC1643 = 70,000 (RC3 D_0 (blue)) |
| DETAILS | NGC1645 is a ringed barred spiral and NGC1643, a barred spiral has produced supernovae SN 1995G and SN 1999et |
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