| NGC 1858 | |
|---|---|
 The open cluster NGC 1858 | |
| Observation data (J2000epoch) | |
| Right ascension | 05h 09m 51.9s[1] |
| Declination | −68° 53′ 28″[1] |
| Apparent magnitude (V) | 9.9 (visible) 9.8 (B-Band)[2] |
| Physical characteristics | |
| Estimated age | 8 million[3] |
| Other designations | ESO 56-SC74, Dunlop 120 |
| Associations | |
| Constellation | Dorado |
| See also:Open cluster,List of open clusters | |
NGC 1858 (also known asESO 56-SC74) is a bright, large, irregularopen cluster andemission nebula. It is found in theDorado constellation. It is located in theLarge Magellanic Cloud. It was first discovered byJames Dunlop on August 3, 1826, and was first recorded as Dunlop 120.John Herschel recorded it on November 2, 1834. However, at the time, he did not associate it with Dunlop 120. Astronomers have now realised that Dunlop 120 and NGC 1858 are the same object.[2]
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