Epsilon Trianguli Australis — Star in Triangulum Australe
Observe
1Physical Properties
Magnitude
4.11
Spectral Type
K1-2III
Star Color
Orange
(B-V 1.17)
(reddened by dust)
Distance
86 ly
2Position & Identifiers
RA
15h 36m 43.2s
Dec
-66° 19' 01.0"
Constellation
Triangulum Australe
(TrA)
HR
5771
HIP
76440
HD
138538
SAO
253226
Bayer
Epsilon
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium+ | Medium+ | Medium |
| 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
Apr – Jun
(peak: May)
5Survey Image
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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
15Stellar Notes
Companion A5.
16
Light Travel Time Machine
17
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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Triangulum Australe
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Constellation
