| DATE | 18 Apr 2017 | |
| 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, 7 min | |
| IMAGE SIZE (ARCMIN) | ~26 | |
| LIGHT TRAVEL TIME (Derived Redshift. Millions Light Years) | NGC4647 = 77 NGC4649 = 64 NGC 4638 = 66 VCC 1982 = 56 2MASX J12433456+1127274 = 1480 |
SDSS J124335.52+112810.7 = 184 SDSS J124327.64+112838.2 = 1353 SDSS J124342.74+114055.4 = 391 SDSS J124343.08+114118.2 = 3258 SDSS J124419.48+113228.8 = 2432 SDSS J124256.10+113714.5 = 1475 SDSS J124249.44+112539.1 = 2078 |
| MAGNITUDE | NGC4647 = 11.94 NGC4649 = 9.81 NGC 4638 = 12.1g VCC 1982 = 16.1g 2MASX J12433456+1127274 = 17.8 |
SDSS J124335.52+112810.7 = 18.7g SDSS J124327.64+112838.2 = 18.2g SDSS J124342.74+114055.4 = 17.1g SDSS J124343.08+114118.2 = 20.3g SDSS J124419.48+113228.8 = 18.5g SDSS J124256.10+113714.5 = 17.9g SDSS J124249.44+112539.1 = 18.5g |
| POSITION RA-DEC J2000 | NGC4647 = 12:43:32.30 +11:34:55.0 NGC4649 = 12:43:40.00 +11:33:10.0 NGC 4638 = 12:42:47.40 +11:26:33.0 VCC 1982 = 12:43:51.00 +11:28:01.0 2MASX J12433456+1127274 = 12:43:34.50 +11:27:27.0 |
SDSS J124335.52+112810.7 = 12:43:35.50 +11:28:11.0 SDSS J124327.64+112838.2 = 12:43:27.60 +11:28:38.0 SDSS J124342.74+114055.4 = 12:43:42.70 +11:40:55.0 SDSS J124343.08+114118.2 = 12:43:43.10 +11:41:18.0 SDSS J124419.48+113228.8 = 12:44:19.50 +11:32:29.0 SDSS J124256.10+113714.5 = 12:42:56.10 +11:37:15.0 SDSS J124249.44+112539.1 = 12:42:49.40 +11:25:39.0 |
| POSITION ANGLE: | 181 | |
| Rotation Velocity km/s | NGC4647 = 295 NGC4649 = na NGC 4638 = na |
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| Size (KiloParsecs... kpc) | NGC4647 = 15.35 (POSS1 103a-O) NGC4649 = 36.5 (RC3 D_25; R_25 (blue)) NGC4638 = 13.13 (POSS1 103a-O) |
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| DETAILS | NGC4647 is a weakly barred spiral galaxy. Supernova SN 1979A was found along one of it's dust lanes. NGC4649, sometimes called M60, is an elliptical galaxy. NGC4638 is an edge-on spiral. | |
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