NGC 6559

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. NGC 6559 is relatively small at only a few lightyears across.^[4] The nebula is found within Sharpless 29, an irregular H II region.^[5]

NGC 6559

Nebula
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