HIP 60525 — Double Star in Coma Berenices

Magnitude 6.4^m DoubleStar Coma Berenices (Com) Visible

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1Physical Properties

Magnitude 6.42

Spectral Type A7V+F4V

Star Color Yellow-white (B-V 0.27)

Distance 297 ly

2Position & Identifiers

RA 12h 24m 26.7s

Dec +25° 34' 58.0"

Constellation Coma Berenices (Com)

HR 4719

HIP 60525

HD 108007

SAO 82293

Double Cat 8539

3How easy to split?

Primary 6.4 mag Companion 7.8 mag Separation 1.9″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Hard	Hard	Hard
150 mm Newton 150mm Newt.	Medium+	Medium+	Medium+
Celestron C8 (203 mm SCT) 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 Feb – Apr (peak: Mar)

5Multiple Star System Triple C: optical

Components 3 (triple)

Component IDs AB

Separation 1.9″

Companion Mag 7.8

Companion Sp F4V

Position Angle 322°

Star Colors A: Yellow-white B: Yellow-white

Discoverer STF1639

Notes

AB 6.76 A7V, 7.79 F4V, 678.0y, a = 1.30".

Separation over time

Period: 575.4 y Eccentricity: 0.926 Now: 1.9", PA 322° + 0.03" 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: 6.4 · B: 7.8 · Sep: 1.9″ · PA: 322° · 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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Spectral Classification

9

Hertzsprung-Russell Diagram

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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

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14Stellar Notes

Group/Cluster

Mel 111 #109 (Coma).

15

Light Travel Time Machine

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Relativistic Travel

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.

Easy double, sep 64.9″

Double Star mag 4.81 0.5° Coma Berenices

Bright spiral galaxy

Galaxy mag 12.0 2.9° Coma Berenices

Easy double, sep 3.7″

Double Star mag 5.87 6.2° Coma Berenices

Compact globular cluster

Globular Cluster mag 10.3 7.8° Coma Berenices

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