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HIP 399

HIP 399 DoubleStar Peg Visible Level 2 Small telescope (4") - Requires steady seeing
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Physical Properties

Magnitude 6.25
Spectral Type K4IIIb
Star Color Red (B-V 1.40)

Position & Identifiers

RA 00h 04m 56.0s
Dec +26° 38' 56.0"
Constellation Peg
HR 9109
HIP 399
Double Cat 42

Visibility

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Multiple Star System

Separation 13.1″
Companion Mag 10.7
Position Angle 149°
Star Colors A: Red
Discoverer FOX 103

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 149° A (6.2) B (10.7)

Sep: 13.1″ · PA: 149° · 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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