Kappa Lyrae - Wikiwand
Kappa Draconis - Wikipedia
Hercules | Star-Splitters | Page 2
Alpha Serpentis - Wikiwand
Hercules | Star-Splitters | Page 2
Star-Hopping in the Northern Marches of Corona Borealis, Part Two: Kappa (κ) and Σ 1983; Zeta (ζ) and Σ 1964 ; and Lambda (λ) | Star-Splitters
へび座カッパ星 - Wikipedia
ヘルクレス座カッパ星 - Wikipedia
Kappa Herculis
Journal of Double Star Observations - JDSO.org
Webb Deep-Sky Society: Double Star of the Month Archive 2021
HNSKY help file
Observing Double/Multiple Star Systems - Remote Astrophotography Using Slooh.com
Epsilon Ophiuchi - Wikipedia
Beta Herculis - Wikipedia
Scorpius – Cosmic Reflections
Hercules | Star-Splitters | Page 2
Kappa Coronae Borealis - Wikiwand
Double and Multiple Stars
Sigma Coronae Borealis | Memory Beta, non-canon Star Trek Wiki | Fandom
A spectroscopic quadruple as a possible progenitor of sub-Chandrasekhar type Ia supernovae | Nature Astronomy
Evaluating my double star discoveries - Double Star Observing - Cloudy Nights
John Nanson | Star-Splitters | Page 19
Hercules | Star-Splitters | Page 2
