Spiral Galaxy · Hydra

M83 Southern Pinwheel Galaxy

Magnitude
7.6
Season
Spring
Difficulty
Hard
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Southern Pinwheel Galaxy (M83) Spiral Galaxy

Observer's guide

About Southern Pinwheel Galaxy

Southern Pinwheel Galaxy (M83) is catalogued as a spiral galaxy in Hydra. Its J2000 position is RA 13:37:00.95, Dec -29:51:55.5, corresponding to 204.2538 degrees RA and -29.8658 degrees Dec. The local catalogue places it about 15,000,000 light-years away. Its referenced angular extent is approximately 13.8 by 12.88 arcminutes.

Observing tips

StarWatchr rates this as a hard target at magnitude 7.6. It is associated with spring observing, with midnight placement typically strongest around April. From 52 degrees north its theoretical meridian altitude is about 8.1 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 SBG. SIMBAD records the morphology as SAB(s)c. A published radial velocity value is 519.1 km/s. The SIMBAD record currently connects it to 2801 bibliographic references.

At roughly 13.8 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 13.8 by 12.88 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 M83 are kept separate from practical observing guidance.

Coordinates (J2000/ICRS)
RA 204.25383° · Dec -29.865761°
SIMBAD classification
SBG
Morphology
SAB(s)c
Angular extent
13.8′ × 12.88′
Surface brightness
21.85 mag/arcsec²
Radial velocity
519.1 km/s
Redshift
0.00173303
Linked bibliography
2,801 references
Best midnight placement
April
Observable latitude range
-90° to 60.1°

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

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