V539 Ara
Observable Variable Star
Excellent (71/100)
Range: 5.7 - 6.2, Period: 3.2d, Type: EA
HIP 87314
VariableStar
Ara
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
5.92
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
B2V+B3V
Star Color
Blue-white
(B-V -0.08)
Position & Identifiers
RA
17h 50m 28.2s
Dec
-53° 36' 44.0"
Constellation
Ara
HR
6622
HIP
87314
Variable ID
V539 Ara
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Visibility
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Comparison Stars for V539 Ara (5.7–6.2)
Nearby stable stars for estimating brightness (AAVSO)
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Multiple Star System
Separation
12.3″
Companion Mag
9.2
Companion Sp
B9V
Position Angle
268°
Star Colors
A: Blue-white
B: Blue-white
Discoverer
HJ 4978
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 12.3″ · PA: 268° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
EA 5.66 - 6.18V, 3.169128d.
3.170d, K 154k/s, V0 -6k/s, msin3i 6.67, asini 6.71. Equal components. vsini secondary 119k/s.
Sometimes called Upsilon1 Ara, more often Nu1; generally no letter.
Survey Image
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