4 Sgr
Observable Double Star
Good (57/100)
Sep: 3.7", Companion: mag 8.4
HIP 88116; 4 Sgr
DoubleStar
Sgr
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
4.76
Spectral Type
B9V
Star Color
Blue-white
(B-V -0.04)
Distance
326.2 ly
Position & Identifiers
RA
17h 59m 47.6s
Dec
-23° 48' 58.0"
Constellation
Sgr
HR
6700
HIP
88116
Flamsteed
4 Sgr
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Visibility
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Multiple Star System
Separation
3.7″
Companion Mag
8.4
Position Angle
243°
Star Colors
A: Blue-white
B: Yellow
Discoverer
GUL 1
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 3.7″ · PA: 243° · N up, E left
Resolved · 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.
Survey Image
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