73 Oph
HIP 88964; 73 Oph
DoubleStar
Oph
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.73
Spectral Type
F2V
Star Color
Yellow-white
(B-V 0.37)
Distance
109 ly
Position & Identifiers
RA
18h 09m 33.8s
Dec
+03° 59' 36.0"
Constellation
Oph
HR
6795
HIP
88964
Flamsteed
73 Oph
Double Cat
11111
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
0.8″
Companion Mag
7.5
Position Angle
281°
Star Colors
A: Yellow-white
B: Yellow
Discoverer
STF2281
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.8″ · PA: 281° · 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 Fusion
Stellar Notes
AB 6.07 F2V, 7.03, 270.0y, a = 1.16".
0.019".
Survey Image
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