66 Oph
HIP 88149; 66 Oph
DoubleStar
Oph
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
4.64
Variable Type
Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type
B2Ve
Star Color
Blue-white
(B-V -0.03)
Position & Identifiers
RA
18h 00m 15.8s
Dec
+04° 22' 07.0"
Constellation
Oph
HR
6712
HIP
88149
Flamsteed
66 Oph
Variable ID
V2048 Oph
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Visibility
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Multiple Star System
Separation
0.1″
Companion Mag
6.5
Position Angle
216°
Star Colors
A: Blue-white
Discoverer
WSI 65
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.1″ · PA: 216° · 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
Gamma Cas 4.55 - 4.85V. Also rapid flares to amp. 1.8m possibly from later type companion.
Shell star.
Two spectra.
Survey Image
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