15 Tri
Observable Double Star
Good (56/100)
Sep: 142.4", Companion: mag 6.8
HIP 12086; 15 Tri
DoubleStar
Tri
Visible
Level 1
Naked eye / Binoculars - Requires steady seeing
Physical Properties
Magnitude
5.35
Variable Type
Slow Irregular Variable
Spectral Type
M3IIIa
Star Color
Red
(B-V 1.66)
Distance
203.8 ly
Position & Identifiers
RA
02h 35m 46.8s
Dec
+34° 41' 15.0"
Constellation
Tri
HR
750
HIP
12086
Flamsteed
15 Tri
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Visibility
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Multiple Star System
Separation
142.4″
Companion Mag
6.8
Position Angle
16°
Star Colors
A: Red
Discoverer
AG 304
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 142.4″ · PA: 16° · 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
Lb?, 5.39 - 5.53V.
Companion, A5, optical.
Survey Image
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