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Psi Sgr

HIP 94643; Psi Sgr; 42 Sgr DoubleStar Sgr Visible Level 6 Professional/Research - Requires steady seeing
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Physical Properties

Magnitude 4.85
Spectral Type G8:III+A8V
Star Color Yellow (B-V 0.56)
Distance 652 ly

Position & Identifiers

RA 19h 15m 32.4s
Dec -25° 15' 24.0"
Constellation Sgr
HR 7292
HIP 94643
Bayer Psi
Flamsteed 42 Sgr
Double Cat 12214

Visibility

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Multiple Star System

Components 3
Component IDs AB
Separation 0.2″
Companion Mag 5.7
Companion Sp G8III
Position Angle 106°
Star Colors A: Yellow B: Orange
Discoverer B 430

Size Comparison

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Stellar Lifecycle

Spectral Classification

Hertzsprung-Russell Diagram

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Blackbody Spectrum

Stellar Absorption Spectrum

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Stellar Fusion

Stellar Notes

5.5 F8V, 5.7 F9V, 18.75y, a = 0.153". Component A is SB, 6.2, 6.2v, sep. 0.001".
ADS 12214B, SB2O 10.7786d, K 72.5k/s, V0 -43.0k/s, asini 9.48. Masses 2.1 and 1.7 solar. ADS 12214AB, 7319.0d, K | 10.0k/s, V0 -26.8k/s, msin3i 3.78, asini 866. A, 2.7 solar mass.
Probably not IR source.
AB variously classified as F2:+F7III, F8V+F9V, F6V+F7V, A8V+G8:III.
0.010".

Survey Image

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