Spiral Galaxy · Canes Venatici

M63 Sunflower Galaxy

Magnitude
8.6
Season
Spring
Difficulty
Moderate
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Imaging reference
Sunflower Galaxy (M63) Spiral Galaxy

Observer's guide

About Sunflower Galaxy

Sunflower Galaxy (M63) is catalogued as a spiral galaxy in Canes Venatici. Its J2000 position is RA 13:15:49.33, Dec +42:01:45.4, corresponding to 198.9553 degrees RA and 42.0294 degrees Dec. The local catalogue places it about 37,000,000 light-years away. Its referenced angular extent is approximately 13.18 by 7.94 arcminutes.

Observing tips

StarWatchr rates this as a moderate target at magnitude 8.6. It is associated with spring observing, with midnight placement typically strongest around April. From 52 degrees north its theoretical meridian altitude is about 80 degrees; local horizons and the live altitude chart determine the practical window.

A small telescope under reasonably dark skies is a good starting point; use the live altitude chart to choose its highest point.

What to expect

The SIMBAD classification for the matched source is LIN. SIMBAD records the morphology as SA. A published radial velocity value is 500 km/s. The SIMBAD record currently connects it to 1299 bibliographic references.

At roughly 13.2 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 13.18 by 7.94 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.

Sourced catalogue data

Scientific record

Measurements for M63 are kept separate from practical observing guidance.

Coordinates (J2000/ICRS)
RA 198.955309° · Dec 42.029369°
SIMBAD classification
LIN
Morphology
SA
Angular extent
13.18′ × 7.94′
Position angle
102°
Surface brightness
22.28 mag/arcsec²
Radial velocity
500 km/s
Redshift
0.00166921
Linked bibliography
1,299 references
Best midnight placement
April
Observable latitude range
-48° to 90°

Source: SIMBAD astronomical database (CDS, Strasbourg) (ODbL; checked 2026-08-09). Catalogue values may change when new measurements are published.

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