The Sunflower Galaxy (also known as Spiral Galaxy M63, Messier Object 63, Messier 63, M63, or NGC 5055) is a spiral galaxy in the Canes Venatici constellation. It was discovered by Pierre Méchain in 1779. The Sunflower Galaxy apparently forms a physical group with the Whirlpool Galaxy and several smaller galaxies; the M51 group of galaxies. Image File history File linksMetadata Download high resolution version (1200x894, 265 KB) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... The Hubble sequence is a classification of galaxy types developed by Edwin Hubble in 1936. ... Right ascension (RA; symbol α: Greek letter alpha) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... (Redirected from 1 E22 m) Categories: Orders of magnitude (length) ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60) of one degree. ... Canes Venatici (Latin for hunting dogs) is a small northern constellation that was introduced by Johannes Hevelius in the 17th century. ... The M51 group of galaxies (or simply the M51 group) is a physical group and a galaxy cluster. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standardized distance away. ... Remnant of Keplers Supernova, SN 1604. ... May 25 is the 145th day of the year in the Gregorian calendar (146th in leap years). ... 1971 (MCMLXXI) is a common year starting on Friday (click for link to calendar). ... A spiral galaxy is a type of galaxy in the Hubble sequence which is characterized by the following physical properties: Spiral Galaxy M74 presents a face-on view of its spiral arms. ... Canes Venatici (Latin for hunting dogs) is a small northern constellation that was introduced by Johannes Hevelius in the 17th century. ... Pierre François André Méchain (August 16, 1744 – September 20, 1804) was a French astronomer. ... 1779 was a common year starting on Friday (see link for calendar). ... The Whirlpool Galaxy (also known as Spiral Galaxy M51, Messier Object 51, Messier 51, M51, or NGC 5194) is a classic spiral galaxy located in the Canes Venatici constellation. ... The M51 group of galaxies (or simply the M51 group) is a physical group and a galaxy cluster. ...

External link

• Sunflower Galaxy @ SEDS Messier pages