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68 Oph

HIP 88290; 68 Oph DoubleStar Oph Visible Level 6 Professional/Research - Requires steady seeing
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Physical Properties

Magnitude 4.45
Spectral Type A2Vn
Star Color White (B-V 0.02)
Distance 155.3 ly

Position & Identifiers

RA 18h 01m 45.2s
Dec +01° 18' 19.0"
Constellation Oph
HR 6723
HIP 88290
Flamsteed 68 Oph
Double Cat 10990

Visibility

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Multiple Star System

Separation 0.4″
Companion Mag 7.5
Position Angle 170°
Star Colors A: White B: Yellow
Discoverer BU 1125

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 170° A (4.5) B (7.5)

Sep: 0.4″ · PA: 170° · 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

ADS 10990B? 8.0 - 10.0v.
Binary.
0.008".

Survey Image

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