Messier 106 is an intermediate spiral galaxy in the constellation Canes Venatici, discovered by the French astronomer Pierre Mechain in 1781 and lying between about 22 and 25 million light-years from Earth. It hosts an active nucleus classified as a type 2 Seyfert galaxy, and radio observations of a disk of molecular gas orbiting within the inner light-year of its center have demonstrated the presence of a central supermassive black hole; beyond its two visible spiral arms, the galaxy also shows two "anomalous arms" detectable only in X-rays, and NGC 4217 is thought to be a companion galaxy.
Facts
Classification
Constellation Discovery Year In the Other Atlases
In Constellation
Also in Divinity Atlas: the constellation this subject lies in.
Sources
1. Wikipedia (space and spaceflight articles)
Wikimedia Foundation
2. Messier 63 (The Sunflower Galaxy) - NASA Science
Classification field
Spiral Galaxy
Discovery section
Messier 106 was discovered by Charles Messier's observing assistant, Pierre Mechain, in 1781.
Additional designations text
NGC 4258
View the SourceMessier 106 (Wikipedia)
Messier 106, Wikipedia - lead section, catalogue classification
Messier 106 (also known as NGC 4258) is an intermediate spiral galaxy in the constellation Canes Venatici.
Messier 106, Wikipedia - lead section, constellation
Messier 106 (also known as NGC 4258) is an intermediate spiral galaxy in the constellation Canes Venatici.
- In Group: Spiral Galaxies, infobox 'type' field: SAB(s)bc (NED classification, de Vaucouleurs system) filed under Spiral Galaxies
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