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HIP 99870

HIP 99870 DoubleStar Cyg Visible Level 6 Professional/Research - Requires steady seeing
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Physical Properties

Magnitude 6.31
Spectral Type A2Vn

Position & Identifiers

RA 20h 15m 43.4s
Dec +50° 13' 58.0"
Constellation Cyg
HR 7755
HIP 99870

Visibility

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Multiple Star System

Separation 0.1″
Position Angle 173°
Discoverer CHR 93

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 173° A (6.3) B (8.3)

Sep: 0.1″ · PA: 173° · N up, E left

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

Size Comparison

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Stellar Lifecycle

Spectral Classification

Blackbody Spectrum

Stellar Absorption Spectrum

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Survey Image

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