Tags: Galaxy.
RD1 or 0140+326 RD1 is a distant galaxy it once held the title of most distant galaxy known. RD1 was discovered in March 1998 and is at z = 5.34 and was the first object found to exceed redshift 5. It bested the previous recordholders a pair of galaxies at z=4.92 lensed by the galaxy cluster CL 1358+62 (CL 1358+62 G1 & CL 1358+62 G2). It was the most distant object known to mankind for a few months in 1998 until BR1202-0725 LAE was discovered at z = 5.64.