NGC 6559 is a star-forming region located at a distance of about 5000 light-years from Earth, in the constellation of Sagittarius, showing both emission (red) and reflection (bluish) regions.
| Nebula | |
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NGC 6559 taken by the Danish 1.54-metre telescope located at ESO’s La Silla Observatory. | |
| Observation data: J2000 epoch | |
| Right ascension | 18h 09m 56.8s[1] |
| Declination | −24° 06′ 23″[1] |
| Constellation | Sagittarius[2] |
| Designations | ESO 521-40, LBN 28, LBN 007.03-02.26[3] |
| See also: Lists of nebulae | |
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| NGC | |
New General Catalogue 6500 to 6999 | |
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