Ormond Stone discovered NGC 1692 = LM 1-139 on 11 Dec 1885 with the 26" refractor at the Leander McCormick Observatory. There is nothing at his position, but Harold Corwin examined Stone's discovery sketch and identified NGC 1692 = ESO 552-021. This implies Stone's position is roughly 2 tmin of RA too small, a typical error found in his list. RNGC misidentifies PGC 840096 as NGC 1692. See my RNGC Corrections #5 and Corwin's notes.

400/500mm - 17.5" (2/14/99): faint, moderately large, round, broad concentration to a 30" core. With averted vision the halo extends to at least 1' diameter with ill-defined edges. Located 13' SE of mag 8.9 SAO 169878. Misidentified in the RNGC.

Notes by Steve Gottlieb