Alpha Cir
HIP 71908; Alpha Cir
DoubleStar
Cir
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.19
Range
3.17 - 3.19
Period
0.1 hours
Variable Type
roAp+ACV
Spectral Type
A7VpSrCrEu Kn
Star Color
Yellow-white
(B-V 0.24)
Distance
54 ly
Position & Identifiers
RA
14h 42m 30.4s
Dec
-64° 58' 31.0"
Constellation
Cir
HR
5463
HIP
71908
Bayer
Alpha
Variable ID
Alp Cir
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Visibility
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Light Curve
Multiple Star System
Separation
15.7″
Companion Mag
8.5
Position Angle
224°
Star Colors
A: Yellow-white
Discoverer
DUN 166
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 15.7″ · PA: 224° · 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 Fusion
Stellar Notes
Amp. 0.03V. Magnetic var., about 4 months. Pulsation period 6.8 min?
Binary. Companion K5V.
Also classified F1Vp.
0.074".
Survey Image
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