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HIP 57851

Observable Double Star Fair (27/100)

Sep: 1.4", Companion: mag 7.2

HIP 57851 DoubleStar Mus Visible Level 5 Expert level - Requires steady seeing
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Physical Properties

Magnitude 4.90
Spectral Type B4V
Star Color Blue-white (B-V -0.11)

Position & Identifiers

RA 11h 51m 51.2s
Dec -65° 12' 22.0"
Constellation Mus
HR 4549
HIP 57851

Visibility

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Multiple Star System

Separation 1.4″
Companion Mag 7.2
Position Angle 158°
Star Colors A: Blue-white B: Yellow-white
Discoverer COO 130

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 158° A (4.9) B (7.2)

Sep: 1.4″ · PA: 158° · N up, E left

Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″

Size Comparison

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Spectral Classification

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Blackbody Spectrum

Stellar Absorption Spectrum

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Stellar Notes

Combined mag., colors.
Sco-Cen assoc.

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