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physical object > natural object > celestial body > nebula > H II region > compact H II region > Hourglass Nebula
Up: compact H II region, planetary nebula

Hourglass Nebula
(MyCn18)
subjectfact 
Hourglass Nebulais a part of Lagoon Nebulahas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:11.0
has distance 8000 light-years awayhas source: STSCI, 2001-09-27 09:30:16.0
has synonym MyCn182001-09-27 09:30:16.0
has image has URL: http://oposite.stsci.edu/pubinfo/PR/96/07.html, 2001-09-27 09:30:16.0
has definition A compact H II region in the center of Lagoon Nebula.has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:11.0
is an instance of compact H II region2001-09-27 09:30:11.0
is an instance of planetary nebula2001-09-27 09:30:16.0
planetary nebulahas expansion velocity typically 10 km/s2001-09-27 09:30:11.0
has catalog planetary nebula catalog2001-09-27 09:30:11.0
expanding emission nebulahas composition enhanced with heavy elements relative to the interstellar medium2001-09-27 09:30:11.0
has explosion date2001-09-27 09:30:11.0
has progenitor star2001-09-27 09:30:11.0
H II regionhas composition ionized hydrogen2001-09-27 09:30:11.0
nebulais a part of gas2001-09-27 09:32:19.0
celestial bodyhas spectra2001-09-27 09:30:09.0
physical objecthas location or center of gravity2001-09-27 09:27:27.0
has angular momentum2001-09-27 09:27:27.0
has mass2001-09-27 09:27:27.0
has velocity2001-09-27 09:27:27.0
has momentum2001-09-27 09:27:27.0
has temperature2001-09-27 09:27:27.0
has volume2001-09-27 09:27:27.0
has extent2001-09-27 09:27:27.0
has material2001-09-27 09:27:27.0

Up: compact H II region, planetary nebula