X Trianguli Australis — Variable Star in Triangulum Australe
Excellent (72/100)
Observe
1Physical Properties
Magnitude
5.81
Range
5.03 - 6.05
Period
361 days
Variable Type
Semi-Regular Variable
Spectral Type
C5,5
Star Color
Deep ruby red
(B-V 3.38)
2Position & Identifiers
RA
15h 14m 19.1s
Dec
-70° 04' 46.0"
Constellation
Triangulum Australe
(TrA)
HR
5644
HIP
74582
HD
134453
SAO
253062
Variable ID
X TrA
Querying VizieR catalog...
3How easy to follow?
Magnitude
5.0 – 6.1 mag
Amplitude
1.0 mag
Period
361.1 d
Type
SR
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Hard | V. hard+ | V. hard |
| 50 mm finder 50mm finder | Medium+ | Medium+ | Medium+ |
| 150 mm telescope 150mm scope | Easy | Medium+ | Medium+ |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
Apr – Jun
(peak: May)
5Survey Image
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6Light Curve
7Comparison Stars for X TrA (5.0–6.0)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
8
Size Comparison
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9
Compare Stars
10
Spectral Classification
11
Hertzsprung-Russell Diagram
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12
Stellar Lifecycle
13
Blackbody Spectrum
14
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
15
Stellar Fusion
Discover
16Stellar Notes
Lb 8.1 - 9.1p. Amp. 0.51V, 0.36(B-V).
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.
NGC 5833
Barred spiral galaxy
Galaxy
mag 11.93
2.8°
Apus
NGC 6101
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 9.3
6.1°
Apus
AX Cir
Pulsating variable, period 5.3d
Variable Star
mag 5.87
6.6°
Circinus
S TrA
Pulsating variable, period 6.3d
Variable Star
mag 6.41
7.8°
Triangulum Australe
Theta Aps
Semi-regular variable, range 4.7–6.2
Variable Star
mag 5.50
8.3°
Apus
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Article
Triangulum Australe
Mythology, bright stars, and deep-sky highlights.
Constellation
