12 Oph
HIP 81300; 12 Oph
Star
Oph
Visible
Level 2
Small telescope (4")
Physical Properties
Magnitude
5.75
Spectral Type
K2V
Star Color
Orange
(B-V 0.82)
Distance
35 ly
Position & Identifiers
RA
16h 36m 21.5s
Dec
-02° 19' 29.0"
Constellation
Oph
HR
6171
HIP
81300
Flamsteed
12 Oph
Variable ID
V2133 Oph
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Visibility
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Multiple Star System
Separation
137.9″
Companion Mag
13.4
Position Angle
266°
Star Colors
A: Orange
Discoverer
BUP 171
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
Stellar Notes
Amp. 0.04: at wavelength 4530; 0.02: at 6585. Rotation period from starspots, 11d.
UV deficient.
Also BD -1d3220.
Survey Image
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