100 Her
Observable Double Star
Excellent (72/100)
Sep: 14.4", Companion: mag 5.8
HIP 88818; 100 Her
DoubleStar
Her
Visible
Level 1
Naked eye / Binoculars - Requires steady seeing
Physical Properties
Magnitude
5.86
Spectral Type
A3V
Star Color
White
(B-V 0.12)
Distance
271.8 ly
Position & Identifiers
RA
18h 07m 49.5s
Dec
+26° 06' 05.0"
Constellation
Her
HR
6781
HIP
88818
Flamsteed
100 Her
Double Cat
11089
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Visibility
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Multiple Star System
Components
4
Component IDs
AB
Separation
14.4″
Companion Mag
5.8
Position Angle
185°
Star Colors
A: White
B: White
Discoverer
STF2280
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 14.4″ · PA: 185° · 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
Combined light of 6781-2 varies; uncertain which component the variable.
Binary with HR 6782. Primary is speckle binary, sep. 0.106". Component C, 11v at 76". A companion to A at 0.106" | discovered by speckle interferometry.
Survey Image
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