TT Ret

HIP 19917 DoubleStar Ret Visible Level 5 Expert level - Requires steady seeing

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Physical Properties

Magnitude 6.37

Spectral Type ApEuCrSr:

Star Color White (B-V 0.07)

Distance 217.4 ly

Position & Identifiers

RA 04h 16m 21.1s

Dec -60° 56' 55.0"

Constellation Ret

HR 1357

HIP 19917

Variable ID TT Ret

Visibility

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Multiple Star System

Separation 0.4″

Companion Mag 7.5

Position Angle 230°

Star Colors A: White B: Yellow-white

Discoverer GLE 1

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 0.4″ · PA: 230° · N up, E left

Unresolved · 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

Variable Star

Amp. 0.015y, 2.833d.

Double Star

Binary. Combined mag., colors.

Survey Image

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