15 UMa
HIP 44901; 15 UMa
DoubleStar
UMa
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.48
Spectral Type
F0IVm vs
Star Color
Yellow-white
(B-V 0.27)
Position & Identifiers
RA
09h 08m 52.3s
Dec
+51° 36' 17.0"
Constellation
UMa
HR
3619
HIP
44901
Flamsteed
15 UMa
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Visibility
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Multiple Star System
Separation
26.3″
Companion Mag
10.0
Position Angle
34°
Star Colors
A: Yellow-white
Discoverer
DRS 10
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 26.3″ · PA: 34° · 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
Violet part of spectrum indicates luminosity III; G-band region, V. Also classified A1m.
Survey Image
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