Beta Tucanae — Double Star in Tucana
HIP 2578; Beta3 Tucanae
Observe
1Physical Properties
Magnitude
5.09
Spectral Type
A0V
Star Color
Blue-white
(B-V 0.04)
Distance
67 ly
2Position & Identifiers
RA
00h 32m 43.8s
Dec
-63° 01' 52.0"
Constellation
Tucana
(Tuc)
HR
136
HIP
2578
HD
3003
SAO
248208
Bayer
Beta3
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3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium | Hard+ | Hard+ |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
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Best season
Aug – Oct
(peak: Sep)
5Multiple Star System
Separation
0.1″
Companion Mag
9.7
Companion Sp
K4Ve
Position Angle
12°
Star Colors
A: Blue-white
B: Orange
Discoverer
SHY 116
Short period binary. Both components A-type. Sep. 0.099". CPM with HR 126 and 127.
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6
Size Comparison
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Spectral Classification
9
Hertzsprung-Russell Diagram
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10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
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14
Light Travel Time Machine
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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.
Beta Tuc
HIP 2484; Beta1 Tucanae
Easy double, sep 27.1″
Double Star
mag 4.37
0.2°
Tucana
NGC 466
Bright spiral galaxy
Galaxy
mag 12.74
6.8°
Tucana
NGC 362
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 6.6
8.4°
Tucana
Wurren
HIP 5348; Zeta Phoenicis
Eclipsing binary, period 1.7d
Variable Star
mag 3.92
9.0°
Phoenix
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