NGC 189

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. She added it to her small private list as No. 12. 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 ..

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).

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Hartmut Frommert
Christine Kronberg
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Last Modification: March 11, 2009