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AL Scl

HIP 117931 DoubleStar Scl Visible Level 1 Naked eye / Binoculars - Requires steady seeing
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Physical Properties

Magnitude 6.10
Range 6.06 - 6.33
Period 2.4 days
Variable Type Eclipsing Binary (Algol-type)
Spectral Type B6V
Star Color Blue-white (B-V -0.08)

Position & Identifiers

RA 23h 55m 16.6s
Dec -31° 55' 18.0"
Constellation Scl
HR 9049
HIP 117931
Variable ID AL Scl

Visibility

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Light Curve

Multiple Star System

Separation 133.9″
Companion Mag 6.8
Companion Sp B8V
Position Angle
Star Colors A: Blue-white B: Blue-white
Discoverer SKF 760

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E A (6.1) B (6.8)

Sep: 133.9″ · PA: 1° · 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.

Stellar Fusion

Stellar Notes

E 6.06-6.30V, B6, B9, 2.445094d.
B7, B9, 2.445094d, K 86.0k/s, V0 +9.9k/s, asini 2.89.

Survey Image

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