HIP 31711 — Double Star in Pictor

Magnitude 6.2^m DoubleStar Pictor (Pic) Visible

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Observe

1Physical Properties

Magnitude 6.18

Spectral Type G1-2V

Star Color Yellow (B-V 0.62)

2Position & Identifiers

RA 06h 38m 00.6s

Dec -61° 31' 59.0"

Constellation Pictor (Pic)

HR 2468

HIP 31711

HD 48189

SAO 249604

3How easy to split?

Primary 6.2 mag Companion 8.8 mag Separation 1.2″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	V. hard+	V. hard+	V. hard+
150 mm Newton 150mm Newt.	Hard	Hard	Hard
Celestron C8 (203 mm SCT) C8 203mm	Hard+	Hard+	Hard+

Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

To reach "Medium" at Bortle 3, you'd need at least a 230 mm reflector.

4Visibility

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Best season Nov – Jan (peak: Dec)

5Multiple Star System

Separation 1.2″

Companion Mag 8.8

Companion Sp K7Ve

Position Angle 96°

Star Colors A: Yellow B: Red

Discoverer I 5

Notes

CPM.

Separation over time

Period: 253.3 y Eccentricity: 0.276 Now: 1.2", PA 94° + 0.17" in 5 years

Apparent separation over time, computed from ORB6 orbital elements. Steep curves indicate fast-changing pairs — catch them while they're splittable.

Eyepiece View

Telescope Eyepiece

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80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

A: 6.2 · B: 8.8 · Sep: 1.2″ · PA: 96° · N up, E right

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

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6

Size Comparison

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Compare Stars

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8

Spectral Classification

9

Hertzsprung-Russell Diagram

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Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map

10

Stellar Lifecycle

11

Blackbody Spectrum

12

Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

13

Stellar Fusion

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

Elliptical galaxy

Galaxy mag 11.70 3.0° Volans

Compact globular cluster

Globular Cluster mag 11.79 7.2° Dorado

Open Cluster mag 11.0 7.2° Dorado

HIP 34473; Gamma1 Volantis

Colorful double, sep 13.6″

Double Star mag 5.69 9.5° Volans

HIP 34481; Gamma2 Volantis

Colorful double, sep 14.5″

Double Star mag 3.78 9.5° Volans

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