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HIP 36914 — Double Star in Volans

Magnitude 7.3m DoubleStar Volans (Vol) Visible
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Observe

1Physical Properties

Magnitude 7.26
Spectral Type B9IV subgiant
Distance 326 ly

2Position & Identifiers

RA 07h 35m 21.8s
Dec -74° 16' 32.0"
Constellation Volans (Vol)
HR 2980
HIP 36914
HD 62154

3How easy to split?

Primary 7.3 mag Companion 7.1 mag Separation 1.9″
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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Hard Hard Hard
150mm Newt. Medium+ Medium+ Medium+
C8 203mm Easy Easy Easy
Easy Medium Hard Very hard Impossible

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

4Visibility

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Best season Dec – Feb (peak: Jan)

5Multiple Star System

Separation 1.9″
Companion Mag 7.1
Companion Sp B9IV
Position Angle 306°
Star Colors B: Blue-white
Discoverer HJ 3997
See HR 2979.

Separation over time

Measured 1836 → 1996 (160 y)
Separation drift 1.8" → 1.9" (+0.10")
Rate +0.0006" / y
PA drift 281° → 306° (+25°, +0.156°/y)

Essentially fixed on human timescales — the same view your grandchildren will see.

Measured from the WDS observational archive. No orbital solution has been derived — most likely the period is too long to fit an orbit to the available measurement arc.

Eyepiece View

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80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 306°

A: 7.3 · B: 7.1 · Sep: 1.9″ · PA: 306° · N up, E right

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

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Size Comparison

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Spectral Classification

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Hertzsprung-Russell Diagram

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Stellar Lifecycle

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Blackbody Spectrum

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Stellar Absorption Spectrum

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

13

Stellar Fusion

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Light Travel Time Machine

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Relativistic Travel

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