HIP 81702
Observable Double Star
Fair (25/100)
Sep: 1.7", Companion: mag 8.4
HIP 81702
DoubleStar
Ara
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.65
Spectral Type
O5III(f)
Star Color
White
(B-V 0.13)
Distance
465.9 ly
Position & Identifiers
RA
16h 41m 20.3s
Dec
-48° 45' 47.0"
Constellation
Ara
HR
6187
HIP
81702
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Visibility
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Multiple Star System
Components
6
Component IDs
AC
Separation
1.7″
Companion Mag
8.4
Position Angle
11°
Star Colors
A: White
B: Yellow
Discoverer
MLO 8
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.7″ · PA: 11° · N up, E left
Unresolved · 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
AB binary, 5.6, 9.0v sep. 1.6". C = HD 150135, O7:, CPM.
Component A of visual system.
In cluster NGC 6193 #1. Neutral hydrogen shell around the cluster probably at greater distance and not associated with | the cluster. High luminosity member of Ara OB1a complex.
Also classified O5III:n(f).
Survey Image
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