Galaxy · Cassiopeia

C18 NGC 185

Magnitude
9.2
Season
Autumn
Difficulty
Hard
Star-hop chart
C180.0° field0° rotation
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Imaging reference
NGC 185 (C18) Galaxy

Observer's guide

About NGC 185

NGC 185 (C18) is catalogued as a galaxy in Cassiopeia. Its J2000 position is RA 00:38:58, Dec +48:20:42, corresponding to 9.7414 degrees RA and 48.3375 degrees Dec. The local catalogue places it about 2,300,000 light-years away. Its referenced angular extent is approximately 11.48 by 9.55 arcminutes.

Observing tips

StarWatchr rates this as a hard target at magnitude 9.2. It is associated with autumn observing, with midnight placement typically strongest around September. From 52 degrees north its theoretical meridian altitude is about 86.3 degrees; local horizons and the live altitude chart determine the practical window.

Because it is faint, use a larger aperture where possible, avoid bright Moon conditions, and use averted vision.

What to expect

The SIMBAD classification for the matched source is Sy2. SIMBAD records the morphology as dGspD.... A published radial velocity value is -181.4 km/s. The SIMBAD record currently connects it to 842 bibliographic references.

At roughly 11.5 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 11.48 by 9.55 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 C18 are kept separate from practical observing guidance.

Coordinates (J2000/ICRS)
RA 9.741417° · Dec 48.33751°
SIMBAD classification
Sy2
Morphology
dGspD...
Angular extent
11.48′ × 9.55′
Position angle
35°
Surface brightness
22.93 mag/arcsec²
Radial velocity
-181.43 km/s
Redshift
-0.000605
Linked bibliography
842 references
Best midnight placement
September
Observable latitude range
-41.7° 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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