NGC 5644 NGC 5623
Boo
☀12.5mag
Ø 2.4' / 78''

<

Édouard Stephan discovered NGC 5641 = St XI-24 on 4 Jun 1880 (or earlier on 15 May 1877). His micrometric position matches UGC 9300.

300/350mm - 13" (6/4/83): fairly faint, moderately large, slightly elongated, broadly concentrated. Located 33' NNE of ∑1850 = 7.0/7.4 at 26". NGC 5657 is 29' NE.

400/500mm - 17.5" (6/20/98): moderately bright, fairly large, elongated 5:2 NNW-SSE, 2.0'x0.8'. Fairly well-defined 30" oval core. A mag 13 star is 2.8' preceding. IC 4442 is 11' NW at the edge of the 220x field.

Notes by Steve Gottlieb