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HIP 77390

HIP 77390 DoubleStar TrA Visible Level 4 Large telescope (10"+) - Requires steady seeing
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Physical Properties

Magnitude 6.18
Spectral Type A5III-IV
Star Color Yellow-white (B-V 0.22)

Position & Identifiers

RA 15h 47m 53.6s
Dec -65° 26' 33.0"
Constellation TrA
HR 5851
HIP 77390

Visibility

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Multiple Star System

Separation 1.7″
Companion Mag 6.4
Position Angle 145°
Star Colors A: Yellow-white B: Yellow-white
Discoverer RMK 20

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 145° A (6.2) B (6.4)

Sep: 1.7″ · PA: 145° · N up, E left

Unresolved · 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 Notes

CPM with HR 5852. Combined mag. and colors, 5.53V, +0.23(B-V), +0.10(U-B).
Also classified A7V.

Survey Image

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