NGC 189

Open Cluster NGC 189 (= h 36 = GC 92 = Collinder 462), in Cassiopeia

Right Ascension 00 : 39.6 (h:m)

Declination +61 : 04 (deg:m)

Distance 3.5 (kly)

Visual Brightness 8.8 (mag)

Apparent Dimension 3.7 (arc min)

Right Ascension	00 : 39.6 (h:m)
Declination	+61 : 04 (deg:m)
Distance	3.5 (kly)
Visual Brightness	8.8 (mag)
Apparent Dimension	3.7 (arc min)

Discovered by Caroline Herschel on September 27, 1783.

This little conspicuous open cluster was found by Caroline Herschel on September 27, 1783, together with NGC 225 and NGC 659. Due to unknown circumstances, this observation was confused by her brother, William Herschel with another one, NGC 381 (his H VIII.64) so that William has never seen this cluster. Only 46 years later, John Herschel independently rediscovered this object on October 27, 1829 and cataloged it as h 36. The identity with Caroline's observation was not recovered before 2005 (Hoskin 2005).

.. more to come soon ..

Jean-Claude Mermilliod's WEBDA cluster page for NGC 189

SIMBAD Data of NGC 189

Publications on NGC 189 (NASA ADS)

Observing Reports for NGC 189 (IAAC Netastrocatalog)

NGC Online data for NGC 189

References

Michael Hoskin, 2005. Caroline Herschel as Observer. Journal for the History of Astronomy, Vol. 36, Part 4, No. 125, pp. 373-406 (November 2005).

Hartmut Frommert
Christine Kronberg
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Last Modification: June 15, 2006