Globular Cluster · Tucana

C106 47 Tucanae

Magnitude
4.1
Season
Autumn
Difficulty
Very Easy
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C1060.0° field0° rotation
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Imaging reference
47 Tucanae (C106) Globular Cluster

Observer's guide

About 47 Tucanae

47 Tucanae (C106) is catalogued as a globular cluster in Tucana. Its J2000 position is RA 00:24:05, Dec -72:04:52, corresponding to 6.0223 degrees RA and -72.0814 degrees Dec. The local catalogue places it about 14,700 light-years away. Its referenced angular extent is approximately 43.8 by 43.8 arcminutes.

Observing tips

StarWatchr rates this as a very easy target at magnitude 4.1. It is associated with autumn observing, with midnight placement typically strongest around September. From 52 degrees north its theoretical meridian altitude is about 0 degrees; local horizons and the live altitude chart determine the practical window.

Its brightness makes it a practical binocular or small-telescope candidate when it is well above the horizon.

What to expect

The SIMBAD classification for the matched source is GlC. A published radial velocity value is -17.2 km/s. The SIMBAD record currently connects it to 4193 bibliographic references.

Its roughly 43.8 arcminute span suits a medium field of view. Use the listed 43.8 by 43.8 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 C106 are kept separate from practical observing guidance.

Coordinates (J2000/ICRS)
RA 6.022329° · Dec -72.081444°
SIMBAD classification
GlC
Angular extent
43.8′ × 43.8′
Position angle
Radial velocity
-17.2 km/s
Redshift
-0.00005737
Linked bibliography
4,193 references
Best midnight placement
September
Observable latitude range
-90° to 17.9°

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

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