90 Her
Observable Double Star
Fair (24/100)
Sep: 1.6", Companion: mag 8.8
HIP 87563; 90 Her
DoubleStar
Her
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.16
Spectral Type
K1IIIbCN-1
Star Color
Red
(B-V 1.18)
Distance
233.0 ly
Position & Identifiers
RA
17h 53m 18.1s
Dec
+40° 00' 29.0"
Constellation
Her
HR
6677
HIP
87563
Flamsteed
90 Her
Double Cat
10875
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Visibility
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Multiple Star System
Separation
1.6″
Companion Mag
8.8
Position Angle
111°
Star Colors
A: Red
Discoverer
BU 130
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.6″ · PA: 111° · 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 10875. Not certain which component is the var. suspect. Rapid change in difference between components.
Hyades group.
If the secondary is a main sequence star, the inferred spectral type is A5V.
0.003".
Survey Image
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