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25 Aqr

HIP 106944; 25 Aqr DoubleStar Aqr Visible Level 3 Medium telescope (6-8") - Requires steady seeing
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Physical Properties

Magnitude 5.10
Spectral Type K0III
Star Color Orange (B-V 1.04)
Distance 543.6 ly

Position & Identifiers

RA 21h 39m 33.3s
Dec +02° 14' 37.0"
Constellation Aqr
HR 8277
HIP 106944
Flamsteed 25 Aqr

Visibility

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Multiple Star System

Separation 139.5″
Companion Mag 12.4
Position Angle 43°
Star Colors A: Orange
Discoverer BUP 229

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 43° A (5.1) B (12.4)

Sep: 139.5″ · PA: 43° · 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

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