Gamma Ara
HIP 85267; Gamma Ara
DoubleStar
Ara
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.34
Spectral Type
B1II
Star Color
Blue-white
(B-V -0.13)
Distance
1109.2 ly
Position & Identifiers
RA
17h 25m 23.6s
Dec
-56° 22' 39.0"
Constellation
Ara
HR
6462
HIP
85267
Bayer
Gamma
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
18.4″
Companion Mag
10.2
Position Angle
326°
Star Colors
A: Blue-white
Discoverer
HJ 4942
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 18.4″ · PA: 326° · 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
Component B, A7V; C is optical.
Color excess E(B-V) = +0.08.
Sco-Cen assoc.; doubtful member of the Sco-Cen cluster.
Unusually large line broadening for luminosity Ib. Also classified B1III.
Survey Image
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