Globular cluster · Tucana
NGC 104 47 Tucanae
Also known as: C106
mag 4.031′ across
About
NGC 104 (47 Tucanae) is a globular cluster of magnitude 4.0 in Tucana, about 31′ across.
How to find it
- NGC 104 is in the constellation Tucana.
- Best evenings: around mid-November it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
- Where on Earth: it is seen well, at least 10° up, from south of 8° N.
When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.
What you will see
- EyesA fuzzy “star” beside the Small Magellanic Cloud.
- Binoculars (10×50)A bright ball with a dense core.
- Telescope (6–8 inch)Resolves into a vast swarm with a blazing core — second only to Omega Centauri.
For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.
Facts
| Designations | NGC 104, C106 |
|---|---|
| Type | Globular cluster |
| Magnitude | 4.0The smaller the number, the brighter. |
| Apparent size | 31′the full Moon is 31′ across |
| Surface brightness | ≈ 20.1 mag/arcsec²Estimate from the magnitude and size, per square arcsecond. |
| Constellation | Tucana |
| Right ascension (J2000) | 00h 24m 05.4s |
| Declination (J2000) | −72° 04′ 53″ |
More in Tucana
Sources and credits
Catalog data: OpenNGC by Mattia Verga, CC BY-SA 4.0, and d3-celestial by Olaf Frohn, BSD 3-Clause. All data sources →