HIP 87706
HIP 87706
DoubleStar
Sgr
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
6.20
Spectral Type
O7.5II((f))
Star Color
White
(B-V 0.04)
Position & Identifiers
RA
17h 54m 54.0s
Dec
-24° 53' 14.0"
Constellation
Sgr
HR
6672
HIP
87706
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Visibility
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Multiple Star System
Separation
4.5″
Companion Mag
12.7
Position Angle
43°
Star Colors
A: White
Discoverer
SNA 74
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 4.5″ · PA: 43° · 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.
Stellar Notes
Within 0.5d of HII reg. Ma 336.
Also classified O8III, O8IIIf, O8.5III((f)), O8II(f) O7.5II((f)) and O9.5Ib. uv 1394 and 1548 absorption very strong; | 1548 emission weak.
Survey Image
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