NGC 2346 [SEP] constellation
NGC 2346
NGC 2346 (also known as the Butterfly Nebula) is a planetary nebula near the celestial equator in the constellation Monoceros. It is bright and conspicuous and has been extensively studied. Among its most remarkable characteristics is its unusually cool central star, which is a spectroscopic binary, and its unusual shape.
The binary star, which has a period of about 16 days, is also variable, probably due to dust in orbit around it. The dust itself is heated by the central star and so NGC 2346
Butterfly Nebula
Butterfly Nebula may refer to:
- Planetary Nebula M2-9
- NGC 6302, a bipolar planetary nebula in the constellation Scorpius
- NGC 2346
- Little Dumbbell Nebula
- Sadr Region