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HIP 87381

HIP 87381 DoubleStar Sco Visible Level 1 Naked eye / Binoculars - Requires steady seeing
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Physical Properties

Magnitude 6.66
Spectral Type A0Vn
Star Color White (B-V 0.04)

Position & Identifiers

RA 17h 51m 12.5s
Dec -30° 33' 26.0"
Constellation Sco
HR 6645
HIP 87381

Visibility

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Multiple Star System

Separation 10.1″
Companion Mag 8.1
Companion Sp B9V
Position Angle 189°
Star Colors A: White B: Blue-white
Discoverer PZ 5

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 189° A (6.7) B (8.1)

Sep: 10.1″ · PA: 189° · 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

Companion A0IV. Fixed sep.

Survey Image

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