NGC 1898
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Globular cluster NGC 1898 |
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| Center of the star cluster NGC 1898 as seen with the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Swordfish |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 05 h 16 m 41.4 s |
| declination | -69 ° 39 ′ 22 ″ |
| Appearance | |
| Brightness (visual) | 11.86 mag |
| Brightness (B-band) | 12.62 mag |
| Angular expansion | 0.8 ′ |
| Physical data | |
| Affiliation | Large Magellanic Cloud |
| Age | > 13.5 billion years |
| history | |
| discovery | James Dunlop |
| Discovery date | September 27, 1826 |
| Catalog names | |
| NGC 1898 • ESO 56-SC90 • Dun 88 • GC 1106 • OGLE-CL LMC 292, | |
NGC 1898 denotes a globular cluster in the constellation Swordfish . It is approximately 160,000 light years away and is part of the Large Magellanic Cloud . Its age is more than 13.5 billion years and is similar to that of the globular clusters of the Milky Way .
It was long assumed that the globular cluster was discovered in 1834 by the astronomer John Herschel with the help of his 18.7-inch mirror telescope and then later listed in the New General Catalog by Johann Dreyer . However, recent studies show that this was first observed by James Dunlop in 1826 without the identity of the objects being recognized.
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b SIMBAD
- ↑ a b K. AG Olsen, PW Hodge , M. Mateo, EW Olszewski, RA Schommer, NB Suntzeff , AR Walker: HST color-magnitude diagrams of six old globular clusters in the LMC . In: Monthly Notices of the Royal Astronomical Society . 300, No. 3, 1998, pp. 665-685. bibcode : 1998MNRAS.300..665O . doi : 10.1046 / j.1365-8711.1998.01860.x .
- ↑ Seligman
- ^ Glendyn John Cozens: An analysis of the first three catalogs of southern star clusters and nebulae. PhD thesis, James Cook University , 2008.