30 Oph
HIP 83262; 30 Oph
DoubleStar
Oph
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
4.82
Spectral Type
K4III
Star Color
Red
(B-V 1.48)
Distance
217.4 ly
Position & Identifiers
RA
17h 01m 03.6s
Dec
-04° 13' 21.0"
Constellation
Oph
HR
6318
HIP
83262
Flamsteed
30 Oph
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Visibility
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Multiple Star System
Separation
100.4″
Companion Mag
9.7
Position Angle
68°
Star Colors
A: Red
Discoverer
ENG 59
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 100.4″ · PA: 68° · 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.
Survey Image
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