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HIP 4440

HIP 4440 DoubleStar Cas Visible Level 6 Professional/Research - Requires steady seeing
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Physical Properties

Magnitude 5.55
Spectral Type B9IVn
Star Color Blue-white (B-V -0.07)
Distance 465.9 ly

Position & Identifiers

RA 00h 56m 47.1s
Dec +60° 21' 46.0"
Constellation Cas
HR 266
HIP 4440
Double Cat 784

Visibility

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Multiple Star System

Components 3
Component IDs AB
Separation 0.2″
Companion Mag 6.6
Companion Sp B9V+
Position Angle
Star Colors A: Blue-white B: Blue-white
Discoverer BU 1099

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E A (5.5) B (6.6)

Sep: 0.2″ · PA: 9° · 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

AB 6.0 B8V, 6.6 B9V, 83.4y, a = 0.252". Total mass, 6 solar. Primary is a mercury-manganese star.
ADS 784A, 4.2424d, K 88.2k/s, V0 -3.2k/s, msin3i 1.65, asini 4.57.

Survey Image

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