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9 Sgr

HIP 88469; 9 Sgr Star Sgr Visible Level 2 Small telescope (4")
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Physical Properties

Magnitude 5.97
Spectral Type O4V((f))
Star Color White (B-V 0.00)

Position & Identifiers

RA 18h 03m 52.4s
Dec -24° 21' 38.0"
Constellation Sgr
HR 6736
HIP 88469
Flamsteed 9 Sgr

Visibility

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Multiple Star System

Separation 0.0″
Companion Mag 6.8
Position Angle 69°
Star Colors A: White B: White
Discoverer SNA 78

Eyepiece View

15x Dawes: 1.9″ TFOV: 3.3°
Realistic = true angular size
N E 69° A (6.0) B (6.8)

Sep: 0.0″ · PA: 69° · 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

Color excess E(B-V) = +0.34.
Cluster NGC 6530 #7; Sgr OB1; in HII reg. S25; in nebulosity.
uv observations indicate dwarf; 1548 emission very strong.

Survey Image

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