Galaxy · Centaurus

C77 Centaurus A

Magnitude
6.8
Season
Spring
Difficulty
Hard
Star-hop chart
C770.0° field0° rotation
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Imaging reference
Centaurus A (C77) Galaxy

Observer's guide

About Centaurus A

Centaurus A (C77) is catalogued as a galaxy in Centaurus. Its J2000 position is RA 13:25:27, Dec -43:01:09, corresponding to 201.3651 degrees RA and -43.0191 degrees Dec. The local catalogue places it about 10,000,000 light-years away. Its referenced angular extent is approximately 25.7 by 17.78 arcminutes.

Observing tips

StarWatchr rates this as a hard target at magnitude 6.8. It is associated with spring observing, with midnight placement typically strongest around April. From 52 degrees north its theoretical meridian altitude is about 0 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 BLL. SIMBAD records the morphology as S0pec. A published radial velocity value is 562.2 km/s. The SIMBAD record currently connects it to 4820 bibliographic references.

Its roughly 25.7 arcminute span suits a medium field of view. Use the listed 25.7 by 17.78 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 C77 are kept separate from practical observing guidance.

Coordinates (J2000/ICRS)
RA 201.365063° · Dec -43.019113°
SIMBAD classification
BLL
Morphology
S0pec
Angular extent
25.7′ × 17.78′
Position angle
33°
Surface brightness
22.08 mag/arcsec²
Radial velocity
562.17 km/s
Redshift
0.00187695
Linked bibliography
4,820 references
Best midnight placement
April
Observable latitude range
-90° to 47°

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

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24-hour altitude profile

Use the highest part of the curve to plan the clearest observing window.

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