15 Lac
HIP 112917; 15 Lac
DoubleStar
Lac
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.94
Spectral Type
M0III
Star Color
Red
(B-V 1.56)
Distance
155.3 ly
Position & Identifiers
RA
22h 52m 02.0s
Dec
+43° 18' 45.0"
Constellation
Lac
HR
8699
HIP
112917
Flamsteed
15 Lac
Double Cat
16325
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Visibility
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Multiple Star System
Components
5
Component IDs
AC
Separation
23.6″
Companion Mag
11.9
Position Angle
159°
Star Colors
A: Red
Discoverer
BU 451
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 23.6″ · PA: 159° · 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
AB, CPM. B, 12.2v at 26".
Survey Image
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