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HIP 60157 — Double Star in Corvus

Magnitude 6.0m DoubleStar Corvus (Crv) Visible
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1Physical Properties

Magnitude 5.97
Spectral Type G3IV subgiant
Star Color Orange (B-V 0.82)
Distance 408 ly

2Position & Identifiers

RA 12h 20m 10.7s
Dec -22° 10' 32.0"
Constellation Corvus (Crv)
HR 4691
HIP 60157
HD 107295
SAO 180695
Double Cat 8515

3How easy to split?

Primary 6.0 mag Companion 8.1 mag Separation 0.5″
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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. V. hard V. hard V. hard
150mm Newt. V. hard+ V. hard+ V. hard+
C8 203mm V. hard+ V. hard+ V. 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 460 mm reflector.

4Visibility

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Best season Feb – Apr (peak: Mar)

5Multiple Star System

Separation 0.5″
Companion Mag 8.1
Position Angle 272°
Star Colors A: Orange
Discoverer BU 605

Separation over time

Measured 1870 → 2022 (152 y)
Separation drift 1.0" → 0.50" (-0.50")
Rate -0.0033" / y
PA drift 138° → 272° (+134°, +0.882°/y)

Slow change over generations — observable in lifetime comparisons.

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 272°

A: 6.0 · B: 8.1 · Sep: 0.5″ · PA: 272° · 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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