78 UMa
HIP 63503; 78 UMa
DoubleStar
UMa
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
4.93
Spectral Type
F2V
Star Color
Yellow-white
(B-V 0.36)
Distance
95.9 ly
Position & Identifiers
RA
13h 00m 43.8s
Dec
+56° 21' 59.0"
Constellation
UMa
HR
4931
HIP
63503
Flamsteed
78 UMa
Double Cat
8739
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Visibility
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Multiple Star System
Separation
0.6″
Companion Mag
7.9
Position Angle
153°
Star Colors
A: Yellow-white
B: Orange
Discoverer
BU 1082
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.6″ · PA: 153° · N up, E left
Unresolved · 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
ADS 8739B, 7.5 - 10.5v.
5.05 F2V, 7.43 G6V, 109.97y, a = 1.270" or 106.7y, a = 1.281". Combined mag., colors.
"Dipper Stars;" Sirius group; UMa stream; UMa moving cluster.
0.039".
Survey Image
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