Tau Gem
HIP 34693; Tau Gem; 46 Gem
DoubleStar
Gemini
(Gem)
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
4.41
Spectral Type
K2-III
Star Color
Red
(B-V 1.26)
Distance
466 ly
Position & Identifiers
RA
07h 11m 08.4s
Dec
+30° 14' 43.0"
Constellation
Gemini
(Gem)
HR
2697
HIP
34693
Bayer
Tau
Flamsteed
46 Gem
Double Cat
5846
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Visibility
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Multiple Star System C: optical
Components
3
Component IDs
AB
Separation
1.8″
Companion Mag
11.0
Position Angle
163°
Star Colors
A: Red
Discoverer
BU 1009
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.8″ · PA: 163° · N up, E left
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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 Fusion
Exoplanets
1 known planet
| Planet | Radius | Mass | Period | Distance |
|---|---|---|---|---|
| tau Gem b | 12.10R⊕ | 20.60M♃ | 305.5d | 367ly |
Habitable Zone
Size & Mass Comparison
Stellar Notes
4.3 - 4.36V.
AB CPM.
Light Travel Time Machine
Relativistic Travel
Survey Image
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