Nu Dra
HIP 85829; Nu Dra; 25 Dra
Excellent (60/100)
HIP 85829; Nu Dra; 25 Dra
DoubleStar
Dra
Visible
Level 1
Naked eye / Binoculars - Requires steady seeing
Physical Properties
Magnitude
4.87
Range
4.83 - 4.95
Variable Type
I:
Spectral Type
A4m
Star Color
Yellow-white
(B-V 0.28)
Distance
93 ly
Position & Identifiers
RA
17h 32m 16.0s
Dec
+55° 10' 23.0"
Constellation
Dra
HR
6555
HIP
85829
Bayer
Nu
Flamsteed
25 Dra
Double Cat
10628
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Visibility
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Multiple Star System
Separation
62.2″
Companion Mag
4.9
Companion Sp
A6V
Position Angle
308°
Star Colors
A: Yellow-white
B: Yellow-white
Discoverer
STFA 35
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 62.2″ · PA: 308° · 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 Fusion
Stellar Notes
ADS 10628A, I?, 4.83 - 4.95V.
Binary with HR 6554.
38.5958d, K 12.4k/s, V0 -16.9k/s, asini 6.34.
Also classified F0IVms (variable spectrum) and Am(A4/F2V/F3).
Kuma.
Survey Image
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