Sunflower Galaxy

Messier 63
M63 from GALEX sky survey
Observation data (J2000 epoch)
Constellation	Canes Venatici
Right ascension	13^h 15^m 49.3^s^[1]
Declination	+42° 01′ 45″^[1]
Redshift	484 km/s^[1]
Distance	37 Mly^[2]
Apparent magnitude (V)	9.3^[1]
Characteristics
Type	SA(rs)bc^[1]
Apparent size (V)	12′.6 × 7′.2^[1]
Other designations
M63, NGC 5055, UGC 8334, PGC 46153^[1]

Messier 63 (also known as M63, NGC 5055, or the Sunflower Galaxy) is a spiral galaxy in the constellation Canes Venatici consisting of a central disc surrounded by many short spiral arm segments. M63 is part of the M51 Group, a group of galaxies that also includes M51 (the 'Whirlpool Galaxy'). M63 is an active galaxy with a LINER nucleus.^[3]

History

M63 was discovered by Pierre Méchain on June 14, 1779.^[4] The galaxy was then listed by Charles Messier as object 63 in the Messier Catalogue.

In the mid-19th century, Lord Rosse identified spiral structures within the galaxy, making this one of the first galaxies in which such structure was identified.^[4]

In 1971, a supernova with a magnitude of 11.8 appeared in one of the arms of M63.

Messier 63 seen in infrared by the Spitzer Space Telescope.

References

1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 5055. Retrieved 2006-10-10.
↑ Frommert, Hartmut & Kronberg, Christine (2002). "Messier Object 63". Retrieved Dec. 6, 2006
↑ "SIMBAD results for M63". Retrieved 16 November 2015.
1 2 K. G. Jones (1991). Messier's Nebulae and Star Clusters (2nd ed.). Cambridge: Cambridge University Press. ISBN 0-521-37079-5.

External links

Wikimedia Commons has media related to Sunflower Galaxy.

The Sunflower Galaxy on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Sunflower Galaxy @ SEDS Messier pages
Sunflower Galaxy (M63) at Constellation Guide

Coordinates: 13^h 15^m 49.3^s, +42° 01′ 45″

Messier objects

List	M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12 M13 M14 M15 M16 M17 M18 M19 M20 M21 M22 M23 M24 M25 M26 M27 M28 M29 M30 M31 M32 M33 M34 M35 M36 M37 M38 M39 M40 M41 M42 M43 M44 M45 M46 M47 M48 M49 M50 M51 M52 M53 M54 M55 M56 M57 M58 M59 M60 M61 M62 M63 M64 M65 M66 M67 M68 M69 M70 M71 M72 M73 M74 M75 M76 M77 M78 M79 M80 M81 M82 M83 M84 M85 M86 M87 M88 M89 M90 M91 M92 M93 M94 M95 M96 M97 M98 M99 M100 M101 M102 M103 M104 M105 M106 M107 M108 M109 M110

See also	Caldwell catalogue Catalogue of Nebulae and Clusters of Stars Herschel 400 Catalogue Index Catalogue New General Catalogue Revised New General Catalogue

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New General Catalogue 5000 to 5499

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Astronomical catalog List of NGC objects

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