Kappa Gem
HIP 37740; Kappa Gem; 77 Gem
DoubleStar
Gem
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
3.57
Spectral Type
G9III
Star Color
Orange
(B-V 0.93)
Distance
141.4 ly
Position & Identifiers
RA
07h 44m 26.8s
Dec
+24° 23' 53.0"
Constellation
Gem
HR
2985
HIP
37740
Bayer
Kappa
Flamsteed
77 Gem
Double Cat
6321
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Visibility
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Multiple Star System
Separation
7.0″
Companion Mag
10.0
Position Angle
243°
Star Colors
A: Orange
Discoverer
STT 179
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 7.0″ · 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.
Stellar Notes
0.018".
Survey Image
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