Gamma Tucanae — Double Star in Tucana
Observe
1Physical Properties
Magnitude
3.99
Spectral Type
F1III
giant
Star Color
Yellow-white
(B-V 0.40)
Distance
76 ly
2Position & Identifiers
RA
23h 17m 25.8s
Dec
-58° 14' 09.0"
Constellation
Tucana
(Tuc)
HR
8848
HIP
114996
HD
219571
SAO
247814
Bayer
Gamma
Querying VizieR catalog...
3How easy to split?
Primary
4.0 mag
Companion
12.0 mag
Separation
4.7″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | V. hard | V. hard | V. hard |
| 150 mm Newton 150mm Newt. | V. hard | V. hard | V. hard |
| Celestron C8 (203 mm SCT) C8 203mm | V. hard+ | V. hard+ | V. hard+ |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
To reach "Medium" at Bortle 3, you'd need at least a 540 mm reflector.
4Visibility
Set a location in User Settings to see visibility data.
Best season
Aug – Oct
(peak: Sep)
5Multiple Star System
Separation
4.7″
Companion Mag
12.0
Position Angle
110°
Star Colors
A: Yellow-white
Discoverer
GAT 31
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 4.0 · B: 12.0 · Sep: 4.7″ · PA: 110° · N up, E right
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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7
Size Comparison
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8
Compare Stars
9
Spectral Classification
10
Hertzsprung-Russell Diagram
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11
Stellar Lifecycle
12
Blackbody Spectrum
13
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
Discover
15
Light Travel Time Machine
16
Relativistic Travel
Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
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