HIP 90780
HIP 90780
DoubleStar
Dra
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
6.59
Spectral Type
A8m
Star Color
Yellow-white
(B-V 0.30)
Position & Identifiers
RA
18h 31m 14.8s
Dec
+65° 26' 10.0"
Constellation
Dra
HR
6979
HIP
90780
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Visibility
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Multiple Star System
Separation
22.3″
Companion Mag
10.5
Position Angle
42°
Star Colors
A: Yellow-white
B: Orange
Discoverer
KUI 86
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 22.3″ · PA: 42° · 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
14.3450d, K 68.3k/s, V0 -10.3k/s, msin3i 1.97, asini 13.2, vsini both components 20k/s.
Survey Image
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