Etamin
HIP 87833; Gamma Dra; 33 Dra
HIP 87833; Gamma Dra; 33 Dra
DoubleStar
Dra
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
2.23
Spectral Type
K5III
Star Color
Red
(B-V 1.52)
Distance
154.3 ly
Position & Identifiers
RA
17h 56m 36.4s
Dec
+51° 29' 20.0"
Constellation
Dra
HR
6705
HIP
87833
Bayer
Gamma
Flamsteed
33 Dra
Double Cat
10923
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Visibility
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Multiple Star System
Components
7
Component IDs
AG
Separation
20.3″
Companion Mag
13.4
Position Angle
151°
Star Colors
A: Red
Discoverer
BU 633
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 20.3″ · PA: 151° · 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
Amp. 0.08V. He 10830 variable.
Ultraviolet FeII emission.
ETAMIN; Etanin; Ettanin; Rastaban; Rasaben; Zenith Star.
Survey Image
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