| DATE | 2 Apr 2016 | |
| TELESCOPE OPTICS | 508 mm mirror f.4 ccd Kodak KAF8300 3326 x 2504px 5.4 x 5.4µm | |
| EXPOSURE | binning 1: composite image, 9 min | |
| IMAGE SIZE (ARCMIN) | 29 | |
| LIGHT TRAVEL TIME (Derived Redshift. Millions Light Years) | NGC4621 = 35 NGC4638 = 66 IC 0809 = 24 IC 3684 = 66 IC 3670 = 335 IC 3665 = 69 |
VCC 1909 = 19 SDSS J124149.42+113530.1 = 380 SDSS J124155.33+114003.7 = 46 SDSS J124256.10+113714.5 = 1475 2MASX J12422559+1128208 = 2095 |
| MAGNITUDE | NGC4621 = 10.57 NGC4638 = 12.1g IC 0809 = 14.5 IC 3684 = 16.0g IC 3670 = 16.2g IC 3665 = 15.05 |
VCC 1909 = 16.1 SDSS J124149.42+113530.1 = 17.3 SDSS J124155.33+114003.7 = 18.1g SDSS J124256.10+113714.5 = 17.9g 2MASX J12422559+1128208 = 18.1g |
| POSITION RA-DEC J2000 | NGC4621 = 12:42:02.20 +11:38:49.0 NGC4638 = 12:42:47.40 +11:26:33.0 IC 0809 = 12:42:08.60 +11:45:15.0 IC 3684 = 12:42:26.50 +11:44:25.0 IC 3670 = 12:41:55.00 +11:46:27.0 IC 3665 = 12:41:46.70 +11:29:18.0 |
VCC 1909 = 12:42:07.40 +11:49:41.0 SDSS J124149.42+113530.1 = 12:41:49.40 +11:35:30.0 SDSS J124155.33+114003.7 = 12:41:55.30 +11:40:04.0 SDSS J124256.10+113714.5 = 12:42:56.10 +11:37:15.0 2MASX J12422559+1128208 = 12:42:25.60 +11:28:21.0 |
| POSITION ANGLE: | 196 | |
| Rotation Velocity km/s | NGC4621 = 120 NGC4638 = na |
|
| Size (Light Years) | NGC4621 = 79,000 (RC3 D_25; R_25 (blue)) NGC4638 = 43,000 (POSS1 103a-O) |
|
| DETAILS | NGC4621 is an elliptical galaxy. SN 1939B was discovered here. NGC4638 is an edg-on spiral | |
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