NGC6438 Galaxy in Octans

DATE 20 Jun 2015
TELESCOPE OPTICS 508 mm mirror f.4 ccd Kodak KAF8300 3326 x 2504px 5.4 x 5.4µm
EXPOSURE binning 1: composite image, 25min
IMAGE SIZE (ARCMIN) 29.6
LIGHT TRAVEL TIME (Derived Redshift. Millions Light Years) NGC6438 = 110
NGC6438A = 113
MAGNITUDE NGC6438 = 12.1
NGC6438A = 12.57
POSITION RA-DEC J2000 NGC6438 = 18:22:17.50 -85:24:07.0
NGC6438A = 18:22:35.50 -85:24:23.0
POSITION ANGLE: 289
Rotation Velocity km/s NGC6438 = insufficient data
NGC6438A = ~100 (gas rotaion)
Size (Light Years) NGC6438 = 70,500 (ESO-LV "Quick Blue" IIa-O)
NGC6438A = 137,700 (ESO-LV "Quick Blue" IIa-O)
DETAILS Companion galaxies. NGC6438 is a lenticular galaxy i.e. possessing both spiral and elliptical properties also classed as having a ring. NGC6438A is a ring galaxy where some deformation seems to have occurred. Some reults seem to suggest that this may be an interacting triplet, however the system is too complex to determine accurate data.
Rollover Image
6438

6438