NGC 5409 IC 4516
Boo
☀13.2mag
Ø 90'' / 54''

Stephane Javelle discovered IC 4534 = J. 3-1359 on 28 Jul 1903. There is nothing at his position. However, Malcolm Thomson found that Javelle very likely misidentified his reference star (GSC 2024:622). Applying his offsets to this star lands on UGC 9713. Furthermore, this galaxy fits his description "pB, S, elongated north south, nucleus", so this identification is certain. Due to his erroneous position, CGCG, MCG and PGC fail to label their catalogue entries as IC 4534.

400/500mm - 17.5" (6/3/00): fairly faint, fairly small, elongated 3:2 NNW-SSE, brighter core. A mag 14 star is close off the south end [1.1' from center]. At moments appears to have a fainter, outer halo. This galaxy is identified as UGC 9713 in all catalogues and the equivalence with Javelle's IC 4534 was uncovered by Malcolm Thomson.

Notes by Steve Gottlieb